NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-11-15 T09:35:06 PST
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You have selected the following parameters to search on:

Parameters for Distances and Cosmology: Ho= 73.0; Ωmatter = 0.27; Ωvacuum = 0.73;
Derived Quantities use a Redshift corrected to a Reference Frame defined by the 3K CMB

NED results for object NGC 4644*


3 objects found in NED.    

SOURCE LIST

Object list is sorted on RA or Longitude


 Row          Object Name                 EquJ2000.0       Object  Velocity/Redshift    Mag./  Separ.               Number of                                 Row 
 No.     (* => Essential Note)       RA               DEC  Type     km/s       z   Qual Filter arcmin Refs Notes Phot Posn Vel/z Diam Assoc Images   Spectra  No. 
1    NGC 4644                       12h42m42.6s +55d08m44s G        4947  0.016501      14.4g    ...    53     4   61   15    12   15     0 Retrieve Retrieve 1   
2    SN 2007cm                      12h42m45.2s +55d08m57s SN        ...       ...       ...     ...     8     0    0    3     0    0     0 Retrieve Retrieve 2   
3    NGC 4644B                      12h42m52.6s +55d08m45s G        4808  0.016039      15.6g    ...    30     2   34    4     5   10     0 Retrieve Retrieve 3   

Detailed information for each object


Object No. 1 - NGC 4644

INDEX for NGC 4644
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Quick-Look Angular and Physical Sizes
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images
   
61 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
53 Reference(s)   
15 Position data point(s)
12 Redshift data point(s)   
15 Diameter data point(s)   
4 Note(s)   
UGC data    
RC3 data    

ESSENTIAL NOTE for NGC 4644 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 4644 (Back to INDEX)
Object Names Type Object Names Type
NGC 4644G ASK 240136.0 G
UGC 07887 G HOLM 447A G
SBS 1240+554B EmLS NSA 042717 G
CGCG 270-014 NED01 G PGC 042708 G
CGCG 1240.4+5525 NED01 G UZC J124242.9+550841 G
MCG +09-21-030 G SDSS-g-eon-0363 G
2MASX J12424266+5508435 IrS SDSS-i-eon-0382 G
2MASXi J1242426+550844 IrS SDSS-r-eon-0372 G
2MASS J12424266+5508440 IrS CALIFA 569 G
SDSS J124242.65+550843.8 G HARO 32:[D70a] D G
SDSS J124242.66+550843.8 G LGG 300:[G93] 001 G
SDSS J124242.66+550843.9 G [TCW2007] 130 G
KPG 352A G [TTL2012] 259061 G
LDCE 0914 NED001 G SDSS J124242.65+550844.0 G
HDCE 0726 NED001 G    

COORDINATES for NGC 4644 (Back to INDEX)

Position Reference:2007SDSS6.C...0000:

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  190.109571   55.419262 12h40m26.297s +55d25m09.34s  5.00E-01  5.00E-01    0
Equatorial (J2000.0)  190.677737   55.145513 12h42m42.657s +55d08m43.85s  5.00E-01  5.00E-01    0
Ecliptic   (B1950.0)  157.086181   52.654312                              5.00E-01  5.00E-01    0
Ecliptic   (J2000.0)  157.792764   52.656359                              5.00E-01  5.00E-01    0
Galactic              125.582678   61.937888                              5.00E-01  5.00E-01    0
SuperGalactic          62.011137   11.107752                              5.00E-01  5.00E-01    0
Additional detailed measurements with references are also available by clicking below:
15 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 4644 (Back to INDEX)

4 Distances found in NED View 4 Individual Distance Measurement(s) for NGC 4644

Summary Statistics computed by NED from 4 Distance(s) in the literature:
NOTE: These summary statistics are provided for "quick-look" reference only;
they are based exclusively on original values, as published.
No homogenization or corrections have been applied.


NGC 4644 Distance Modulus
(mag)
Metric Distance
(Mpc)
Mean 34.66 85.375
Std. Dev. 0.13 5.067
Min. 34.46 78.000
Max. 34.74 88.700
Median 34.71 87.400

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 4644 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
HierarchyPPPair member (points to parent)...1972AISAO...7....3K
KinematicsHI line widthHI line width...1999A&AS..135..429B
Luminosity Class3.0LC II...1991RC3.9.C...0000d
Galaxy MorphologySBb:SBb?...1991RC3.9.C...0000d
Distance IndicatorTully-FisherTully-Fisher...2007A&A...465...71T
13 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for NGC 4644 (Back to INDEX)
Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration 
of the Schlegel, Finkbeiner & Davis 1998, Appendix B; 1998ApJ...500..525S (SFD98) infrared-based dust map.
The map is based on dust emission from COBE/DIRBE and IRAS/ISSA;
the recalibration assumes a Fitzpatrick (1999PASP..111...63F) reddening law with Rv = 3.1 and different source spectrum than SFD98.

L a n d o l tS D S SU K I R T
Filter [µm]U (0.35)B (0.43)V (0.54)R (0.64)I (0.80)u (0.36)g (0.47)r (0.62)i (0.75)z (0.89)J (1.25)H (1.66)K (2.19)L' (3.78)
Aλ [mag]0.0880.0740.0560.0440.0310.0860.0670.0470.0350.0260.0140.0090.0060.003
Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
For completeness, we include the original SFD98 values:
L a n d o l tS D S SU K I R T
Filter [µm]U (0.34)B (0.44)V (0.54)R (0.65)I (0.81)u (0.35)g (0.49)r (0.63)i (0.78)z (0.93)J (1.27)H (1.67)K (2.22)L' (3.81)
Aλ [mag]0.1050.0840.0640.0520.0380.1000.0740.0530.0400.0290.0170.0110.0070.003


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.020 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 4644 (Back to INDEX)
Helio. Radial Velocity     :      4947 +/-       39 km/s      
Redshift                   :  0.016501 +/- 0.000130        2000UZC...C......0F
Major Diameter (arcmin)    :  1.74
Minor Diameter (arcmin)    :  0.42
Magnitude and Filter       : 14.4g
Classifications            : Sb                  

NOTE: This information is indicative only. With the exception of the
      redshift they are unreferenced and highly inhomogeneous as to
      their origin. The Radial Velocity (when available) is computed
      from the listed redshift. The remaining values are designed to
      orient the user with a quick-look, overall assessment of the
      general properties of the object in question. They are not
      averages nor are they standardized in any way.
Additional detailed measurements with references are also available by clicking below:
12 Redshift data point(s)      61 photometric data point(s)      15 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for NGC 4644 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    4947 +/-     39 km/s      2000UZC...C......0F
V (Kinematic LSR)          :    4957 +/-     39 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    5039 +/-     39 km/s      1991RC3.9.C...0000d
V (Local Group)            :    5052 +/-     39 km/s      1996AJ....111..794K
V (3K CMB)                 :    5104 +/-     40 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    5242 +/-     42 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    5367 +/-     43 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    5397 +/-     43 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    69.0 +/-    4.9 Mpc      (m-M) = 34.20 +/- 0.15 mag
D (Local Group)            :    69.2 +/-    4.9 Mpc      (m-M) = 34.20 +/- 0.15 mag
D (3K CMB)                 :    69.9 +/-    4.9 Mpc      (m-M) = 34.22 +/- 0.15 mag
D (Virgo Infall only)      :    71.8 +/-    5.1 Mpc      (m-M) = 34.28 +/- 0.15 mag
D (Virgo + GA only)        :    73.5 +/-    5.2 Mpc      (m-M) = 34.33 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    73.9 +/-    5.2 Mpc      (m-M) = 34.34 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     335 pc/arcsec =  0.335 kpc/arcsec =  20.08 kpc/arcmin =   1.20 Mpc/degree
Scale (Local Group)        :     336 pc/arcsec =  0.336 kpc/arcsec =  20.13 kpc/arcmin =   1.21 Mpc/degree
Scale (3K CMB)             :     339 pc/arcsec =  0.339 kpc/arcsec =  20.34 kpc/arcmin =   1.22 Mpc/degree
Scale (Virgo Infall only)  :     348 pc/arcsec =  0.348 kpc/arcsec =  20.89 kpc/arcmin =   1.25 Mpc/degree
Scale (Virgo + GA only)    :     356 pc/arcsec =  0.356 kpc/arcsec =  21.39 kpc/arcmin =   1.28 Mpc/degree
Scale(Virgo + GA + Shapley):     358 pc/arcsec =  0.358 kpc/arcsec =  21.51 kpc/arcmin =   1.29 Mpc/degree

To Search for Nearby Objects (Physical Companions): Enter Your Preferred Values and click on "Submit Environment Search" button
Search for Objects within +/-arcmin where 100 kpc = 4.650 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 4947 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.017025 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 70.9 Mpc (m-M) = 34.25 mag Angular-Size Distance : 68.5 Mpc (m-M) = 34.18 mag Co-Moving Radial Distance : 69.7 Mpc (m-M) = 34.22 mag Co-Moving Tangential Dist. : 69.7 Mpc (m-M) = 34.22 mag Co-Moving Volume : 0.00142 Gpc^3 Light Travel-Time : 0.225 Gyr Age at Redshift 0.017025 : 13.074 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 332 pc/arcsec = 0.332 kpc/arcsec = 19.93 kpc/arcmin = 1.20 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.93470; Magnitude per Unit Area = 0.07332 mag
To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
HoΩmatterΩvacuum     
Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities

QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 4644 (Back to INDEX)

The brightest flux in each of the following spectral regions, when available:
Gamma-Ray (ν > 2E19 Hz); X-Ray (2E19 Hz > ν > 2E16 Hz); Ultraviolet (2E16 Hz > ν > 9E14 Hz); Visual (9E14 Hz > ν > 3E14 Hz);
Near-Infrared (3E14 Hz > ν > 6E13 Hz); Mid-Infrared (6E13 Hz > ν > 7.5E12 Hz); Far-Infrared (7.5E12 Hz > ν > 1E12 Hz);
Sub-Millimeter (1E12 Hz > ν > 3E11 Hz); Millimeter (3E11 Hz > ν > 3E10 Hz); Radio (3E10 Hz > ν).

Spectral
Region
Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
Visualz (SDSS CModel) AB 12.899 asinh mag 2004SDSS3.C...0000:-21.76 [mag] 1.85E+10
Near-InfraredH 10.978 +/- 0.030 mag 20032MASX.C.......:-23.68 +/- 0.15 [mag] 1.72E+10 +/- 1.13E+09
NOTE: The above quantities are derived using an estimated Distance Modulus of (34.66 +/- 0.13) mag corresponding to
a Metric Distance of (85.375 +/- 5.067) Mpc using the Average NED-D value.
The quantities quoted above have not necessarily been corrected for foreground extinction, and no K-Corrections have been applied.

View details and SED for 61 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 4644 (Back to INDEX)

The largest diameters in the Visual and Near-Infrared spectral regions, when available:

Passband Apparent Major Axis
(2a) [arcsec]
Apparent Minor Axis
(2b) [arcsec]
PA
[degrees]
(J2000.0)
Reference Level RefcodePhysical Major Axis
(2a) [kpc]
Physical Minor Axis
(2b) [kpc]
r (SDSS Isophotal) 115.6227.7556 25.0 mag arcsec^-2^ 2007SDSS6.C...0000:47.8611.49
K_s (2MASS "total") 89.3030.3645 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:36.9612.57
NOTE: Physical diameters are derived using a scale of 0.4139 kpc/arcsec based on Average NED-D Metric Distance of (85.375 +/- 5.067) Mpc.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 15 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for NGC 4644 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 4644SIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 4644VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Uppsala General Catalog -- UGC 07887 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Morphological Catalog of Galaxies -- MCG +09-21-030 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J12424266+5508435 NASA/IPAC Infrared Science Archive (IRSA)
2MASS Extended Source Images (JHKs) -- 2MASXi J1242426+550844 NASA/IPAC Infrared Science Archive (IRSA)
version
SDSS Sky Server
Catalogue of Principal Galaxies -- PGC 042708 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 042708 The Lyon/Meudon Extragalactic Database (LEDA)
Query UZC Spectral Archive (60 arcsec search radius)Updated Zwicky Catalog Data (Harvard/SAO)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 4644GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 4644NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 12h42m42.6s, +55d08m44s (J2000)Site/Service
Query Optical and UV Mission Archives (Default search radius)Multimission Archive at STScI (MAST)
Query High Energy Mission Archives (Default search radius)HEASARC (NASA/GSFC)
Explore resources with DataScope (15 arcmin search radius)HEASARC (NASA/GSFC)
version
SDSS Sky Server
Query IRSA for WISE images (10 arcmin search radius)NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
NASA/IPAC Infrared Science Archive (IRSA)
 Size:    Contours (PS)  JPEG  FITS File 
NRAO/VLA Sky Survey (NVSS)
    Size:     GIF     FITS File  
Faint Images of the Radio Sky at Twenty-Centimeters
The NRAO Data Archive System

Back to the list



Object No. 2 - SN 2007cm

INDEX for SN 2007cm
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Redshift-Independent Distances
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images

Spectra   
Redshift-Independent Distances
8 Reference(s)   
3 Position data point(s)

ESSENTIAL NOTE for SN 2007cm (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for SN 2007cm (Back to INDEX)
Object Names Type Object Names Type
SN 2007cmSN NGC 4644:SN 2007cm SN

COORDINATES for SN 2007cm (Back to INDEX)

Position Reference:2007IAUC.8851B...1G

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  190.120167   55.422935 12h40m28.840s +55d25m22.57s  5.00E-01  5.00E-01    0
Equatorial (J2000.0)  190.688250   55.149194 12h42m45.180s +55d08m57.10s  5.00E-01  5.00E-01    0
Ecliptic   (B1950.0)  157.089841   52.660999                              5.00E-01  5.00E-01    0
Ecliptic   (J2000.0)  157.796426   52.663045                              5.00E-01  5.00E-01    0
Galactic              125.569379   61.934647                              5.00E-01  5.00E-01    0
SuperGalactic          62.008691   11.114377                              5.00E-01  5.00E-01    0
Additional detailed measurements with references are also available by clicking below:
3 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for SN 2007cm (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for SN 2007cm (Back to INDEX)
 N/A 

FOREGROUND GALACTIC EXTINCTION for SN 2007cm (Back to INDEX)
Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration 
of the Schlegel, Finkbeiner & Davis 1998, Appendix B; 1998ApJ...500..525S (SFD98) infrared-based dust map.
The map is based on dust emission from COBE/DIRBE and IRAS/ISSA;
the recalibration assumes a Fitzpatrick (1999PASP..111...63F) reddening law with Rv = 3.1 and different source spectrum than SFD98.

L a n d o l tS D S SU K I R T
Filter [µm]U (0.35)B (0.43)V (0.54)R (0.64)I (0.80)u (0.36)g (0.47)r (0.62)i (0.75)z (0.89)J (1.25)H (1.66)K (2.19)L' (3.78)
Aλ [mag]0.0900.0750.0570.0450.0310.0880.0690.0470.0350.0260.0150.0090.0060.003
Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
For completeness, we include the original SFD98 values:
L a n d o l tS D S SU K I R T
Filter [µm]U (0.34)B (0.44)V (0.54)R (0.65)I (0.81)u (0.35)g (0.49)r (0.63)i (0.78)z (0.93)J (1.27)H (1.67)K (2.22)L' (3.81)
Aλ [mag]0.1060.0840.0640.0520.0380.1000.0740.0530.0410.0290.0180.0110.0070.003


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.020 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for SN 2007cm (Back to INDEX)
SuperNova Type             : IIn                 
Magnitude at Max and Filter: <16.1
System                     :      
Date of Maximum Light      :      
Spare 5                    :         

NOTE: This information is indicative only. With the exception of the
      redshift they are unreferenced and highly inhomogeneous as to
      their origin. The Radial Velocity (when available) is computed
      from the listed redshift. The remaining values are designed to
      orient the user with a quick-look, overall assessment of the
      general properties of the object in question. They are not
      averages nor are they standardized in any way.

EXTERNAL ARCHIVES AND SERVICES for SN 2007cm Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- SN 2007cmSIMBAD (CDS, Strasbourg, France)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- SN 2007cmGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- SN 2007cmNASA/IPAC Infrared Science Archive (IRSA)
Resources for position 12h42m45.2s, +55d08m57s (J2000)Site/Service
Query Optical and UV Mission Archives (Default search radius)Multimission Archive at STScI (MAST)
Query High Energy Mission Archives (Default search radius)HEASARC (NASA/GSFC)
Explore resources with DataScope (15 arcmin search radius)HEASARC (NASA/GSFC)
version
SDSS Sky Server
Query IRSA for WISE images (10 arcmin search radius)NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
NASA/IPAC Infrared Science Archive (IRSA)
 Size:    Contours (PS)  JPEG  FITS File 
NRAO/VLA Sky Survey (NVSS)
    Size:     GIF     FITS File  
Faint Images of the Radio Sky at Twenty-Centimeters
The NRAO Data Archive System

Back to the list



Object No. 3 - NGC 4644B

INDEX for NGC 4644B
Essential Data (jump to sub-section of this query report):

   Essential Note    
   Cross-IDs    
   Coordinates    
   Basic Data   
   Quantities Derived from Redshift    
   Redshift-Independent Distances
   Quick-Look Photometry and Luminosities
   Quick-Look Angular and Physical Sizes
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images
   
34 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
30 Reference(s)   
4 Position data point(s)
5 Redshift data point(s)   
10 Diameter data point(s)   
2 Note(s)   
RC3 data    

ESSENTIAL NOTE for NGC 4644B (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 4644B (Back to INDEX)
Object Names Type Object Names Type
NGC 4644BG SDSS J124252.65+550844.9 G
UGC 07887 NOTES01 G KPG 352B G
SBS 1240+554C EmLS ASK 240138.0 G
CGCG 270-014 NED02 G HOLM 447B G
CGCG 1240.4+5525 NED02 G NSA 042719 G
MCG +09-21-032 G PGC 042725 G
2MFGC 10006 G HARO 32:[D70a] C G
2MASX J12425272+5508445 IrS LGG 300:[G93] 007 G
2MASXi J1242527+550844 IrS [JVA2010] 084 G
2MASS J12425281+5508439 IrS [TTL2012] 259063 G
SDSS J124252.64+550844.8 VisS SDSS J124252.64+550845.0 G
SDSS J124252.65+550844.8 G    

COORDINATES for NGC 4644B (Back to INDEX)

Position Reference:2004SDSS3.C...0000:

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  190.151498   55.419518 12h40m36.359s +55d25m10.27s  5.00E-01  5.00E-01    0
Equatorial (J2000.0)  190.719375   55.145806 12h42m52.650s +55d08m44.90s  5.00E-01  5.00E-01    0
Ecliptic   (B1950.0)  157.115864   52.669875                              5.00E-01  5.00E-01    0
Ecliptic   (J2000.0)  157.822453   52.671918                              5.00E-01  5.00E-01    0
Galactic              125.532179   61.939293                              5.00E-01  5.00E-01    0
SuperGalactic          62.015709   11.131123                              5.00E-01  5.00E-01    0
Additional detailed measurements with references are also available by clicking below:
4 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 4644B (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 4644B (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
HierarchyPPPair member (points to parent)...1972AISAO...7....3K
Galaxy MorphologyS?S?...1991RC3.9.C...0000d
5 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for NGC 4644B (Back to INDEX)
Galactic Extinction from the Schlafly & Finkbeiner 2011, Appendix; 2011ApJ...737..103S (SF11) recalibration 
of the Schlegel, Finkbeiner & Davis 1998, Appendix B; 1998ApJ...500..525S (SFD98) infrared-based dust map.
The map is based on dust emission from COBE/DIRBE and IRAS/ISSA;
the recalibration assumes a Fitzpatrick (1999PASP..111...63F) reddening law with Rv = 3.1 and different source spectrum than SFD98.

L a n d o l tS D S SU K I R T
Filter [µm]U (0.35)B (0.43)V (0.54)R (0.64)I (0.80)u (0.36)g (0.47)r (0.62)i (0.75)z (0.89)J (1.25)H (1.66)K (2.19)L' (3.78)
Aλ [mag]0.0890.0740.0560.0440.0310.0870.0680.0470.0350.0260.0150.0090.0060.003
Show/Hide Aλ magnitudes in all 88 photometric bands based on SF11
For completeness, we include the original SFD98 values:
L a n d o l tS D S SU K I R T
Filter [µm]U (0.34)B (0.44)V (0.54)R (0.65)I (0.81)u (0.35)g (0.49)r (0.63)i (0.78)z (0.93)J (1.27)H (1.67)K (2.22)L' (3.81)
Aλ [mag]0.1100.0870.0670.0540.0390.1040.0770.0560.0420.0300.0180.0120.0070.003


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.020 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 4644B (Back to INDEX)
Helio. Radial Velocity     :      4808 +/-        2 km/s      
Redshift                   :  0.016039 +/- 0.000006        2004SDSS3.C...0000:
Major Diameter (arcmin)    :  1.31
Minor Diameter (arcmin)    :  0.25
Magnitude and Filter       : 15.6g
Classifications            : S?                  

NOTE: This information is indicative only. With the exception of the
      redshift they are unreferenced and highly inhomogeneous as to
      their origin. The Radial Velocity (when available) is computed
      from the listed redshift. The remaining values are designed to
      orient the user with a quick-look, overall assessment of the
      general properties of the object in question. They are not
      averages nor are they standardized in any way.
Additional detailed measurements with references are also available by clicking below:
5 Redshift data point(s)      34 photometric data point(s)      10 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for NGC 4644B (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    4808 +/-      2 km/s      2004SDSS3.C...0000:
V (Kinematic LSR)          :    4818 +/-      2 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    4901 +/-      4 km/s      1991RC3.9.C...0000d
V (Local Group)            :    4914 +/-      7 km/s      1996AJ....111..794K
V (3K CMB)                 :    4965 +/-     11 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    5105 +/-     15 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    5231 +/-     17 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    5261 +/-     17 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    67.1 +/-    4.7 Mpc      (m-M) = 34.13 +/- 0.15 mag
D (Local Group)            :    67.3 +/-    4.7 Mpc      (m-M) = 34.14 +/- 0.15 mag
D (3K CMB)                 :    68.0 +/-    4.8 Mpc      (m-M) = 34.16 +/- 0.15 mag
D (Virgo Infall only)      :    69.9 +/-    4.9 Mpc      (m-M) = 34.22 +/- 0.15 mag
D (Virgo + GA only)        :    71.7 +/-    5.0 Mpc      (m-M) = 34.28 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    72.1 +/-    5.0 Mpc      (m-M) = 34.29 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     325 pc/arcsec =  0.325 kpc/arcsec =  19.53 kpc/arcmin =   1.17 Mpc/degree
Scale (Local Group)        :     326 pc/arcsec =  0.326 kpc/arcsec =  19.58 kpc/arcmin =   1.17 Mpc/degree
Scale (3K CMB)             :     330 pc/arcsec =  0.330 kpc/arcsec =  19.79 kpc/arcmin =   1.19 Mpc/degree
Scale (Virgo Infall only)  :     339 pc/arcsec =  0.339 kpc/arcsec =  20.34 kpc/arcmin =   1.22 Mpc/degree
Scale (Virgo + GA only)    :     347 pc/arcsec =  0.347 kpc/arcsec =  20.84 kpc/arcmin =   1.25 Mpc/degree
Scale(Virgo + GA + Shapley):     349 pc/arcsec =  0.349 kpc/arcsec =  20.96 kpc/arcmin =   1.26 Mpc/degree

To Search for Nearby Objects (Physical Companions): Enter Your Preferred Values and click on "Submit Environment Search" button
Search for Objects within +/-arcmin where 100 kpc = 4.770 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 4808 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.016563 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 68.9 Mpc (m-M) = 34.19 mag Angular-Size Distance : 66.7 Mpc (m-M) = 34.12 mag Co-Moving Radial Distance : 67.8 Mpc (m-M) = 34.16 mag Co-Moving Tangential Dist. : 67.8 Mpc (m-M) = 34.16 mag Co-Moving Volume : 0.00131 Gpc^3 Light Travel-Time : 0.219 Gyr Age at Redshift 0.016563 : 13.080 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 323 pc/arcsec = 0.323 kpc/arcsec = 19.40 kpc/arcmin = 1.16 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.93640; Magnitude per Unit Area = 0.07134 mag
To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
HoΩmatterΩvacuum     
Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities

QUICK-LOOK PHOTOMETRY and LUMINOSITIES for NGC 4644B (Back to INDEX)

The brightest flux in each of the following spectral regions, when available:
Gamma-Ray (ν > 2E19 Hz); X-Ray (2E19 Hz > ν > 2E16 Hz); Ultraviolet (2E16 Hz > ν > 9E14 Hz); Visual (9E14 Hz > ν > 3E14 Hz);
Near-Infrared (3E14 Hz > ν > 6E13 Hz); Mid-Infrared (6E13 Hz > ν > 7.5E12 Hz); Far-Infrared (7.5E12 Hz > ν > 1E12 Hz);
Sub-Millimeter (1E12 Hz > ν > 3E11 Hz); Millimeter (3E11 Hz > ν > 3E10 Hz); Radio (3E10 Hz > ν).

Spectral
Region
Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
Visuali (SDSS Petrosian)AB 14.843 +/- 0.008 asinh mag 2004SDSS3.C...0000:-19.35 +/- 0.50 [mag] 5.24E+09 +/- 1.05E+09
Near-InfraredH 12.657 +/- 0.076 mag 20032MASX.C.......:-21.53 +/- 0.51 [mag] 2.38E+09 +/- 5.07E+08
NOTE: The above quantities are derived using a Distance Modulus of 34.19 mag corresponding to
a Luminosity Distance of 68.9 Mpc [assuming 10%uncertainty] using the Cosmology-Corrected Quantities.
The quantities quoted above have not necessarily been corrected for foreground extinction, and no K-Corrections have been applied.

View details and SED for 34 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 4644B (Back to INDEX)

The largest diameters in the Visual and Near-Infrared spectral regions, when available:

Passband Apparent Major Axis
(2a) [arcsec]
Apparent Minor Axis
(2b) [arcsec]
PA
[degrees]
(J2000.0)
Reference Level RefcodePhysical Major Axis
(2a) [kpc]
Physical Minor Axis
(2b) [kpc]
r (SDSS Isophotal) 94.0916.00139 25.0 mag arcsec^-2^ 2004SDSS3.C...0000:32.875.59
K_s (2MASS "total") 70.3026.71130 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:24.569.33
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.349 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 10 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for NGC 4644B Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 4644BSIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 4644BVizieR Catalog Query (U.S. mirror, CfA/Harvard)
Morphological Catalog of Galaxies -- MCG +09-21-032 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J12425272+5508445 NASA/IPAC Infrared Science Archive (IRSA)
2MASS Extended Source Images (JHKs) -- 2MASXi J1242527+550844 NASA/IPAC Infrared Science Archive (IRSA)
version
SDSS Sky Server
Catalogue of Principal Galaxies -- PGC 042725 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 042725 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 4644BGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 4644BNASA/IPAC Infrared Science Archive (IRSA)
Resources for position 12h42m52.6s, +55d08m45s (J2000)Site/Service
Query Optical and UV Mission Archives (Default search radius)Multimission Archive at STScI (MAST)
Query High Energy Mission Archives (Default search radius)HEASARC (NASA/GSFC)
Explore resources with DataScope (15 arcmin search radius)HEASARC (NASA/GSFC)
version
SDSS Sky Server
Query IRSA for WISE images (10 arcmin search radius)NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
Band(s): Size:
NASA/IPAC Infrared Science Archive (IRSA)
NASA/IPAC Infrared Science Archive (IRSA)
 Size:    Contours (PS)  JPEG  FITS File 
NRAO/VLA Sky Survey (NVSS)
    Size:     GIF     FITS File  
Faint Images of the Radio Sky at Twenty-Centimeters
The NRAO Data Archive System

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