NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-22 T06:44:19 PDT
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Velocity(km/s): Unconstrained
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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

Detailed Information for Object No. 1

INDEX for IC 2956
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
   
53 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
50 Reference(s)   
14 Position data point(s)
13 Redshift data point(s)   
11 Diameter data point(s)   
1 Note(s)   
UGC data    
RC3 data    

ESSENTIAL NOTE for IC 2956 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for IC 2956 (Back to INDEX)
Object Names Type Object Names Type
IC 2956G LDCE 0832 NED008 G
UGC 06729 G HDCE 0670 NED003 G
CGCG 157-030 G USGC U415 NED01 G
CGCG 1142.6+2703 G ASK 571605.0 G
MCG +05-28-027 G MAPS-NGP O_320_0617678 G
2MASX J11451760+2646025 IrS NSA 101927 G
2MASXi J1145175+264602 IrS PGC 036625 G
2MASS J11451756+2646027 IrS UZC J114517.6+264603 G
SDSS J114517.56+264602.6 G NVSS J114517+264559 RadioS
GALEXASC J114517.48+264602.8 UvS [TTL2012] 318809 G
IRAS F11426+2702 IrS [PJY2015] 587741708346589192 G
     

COORDINATES for IC 2956 (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)  175.672684   27.045075 11h42m41.444s +27d02m42.27s  5.00E-01  5.00E-01    0
Equatorial (J2000.0)  176.323181   26.767391 11h45m17.563s +26d46m02.61s  5.00E-01  5.00E-01    0
Ecliptic   (B1950.0)  164.723510   22.980122                              5.00E-01  5.00E-01    0
Ecliptic   (J2000.0)  165.424729   22.981289                              5.00E-01  5.00E-01    0
Galactic              210.556938   75.265441                              5.00E-01  5.00E-01    0
SuperGalactic          85.741678   -7.789169                              5.00E-01  5.00E-01    0
Additional detailed measurements with references are also available by clicking below:
14 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for IC 2956 (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for IC 2956 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
KinematicsHI line widthHI line width...1987ApJ...320...96G
Luminosity Class4.0LC II-III...1991RC3.9.C...0000d
Galaxy MorphologySAB(s)bcSAB(s)bc...1991RC3.9.C...0000d
4 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for IC 2956 (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]0.1260.1050.0800.0630.0440.1230.0960.0660.0490.0370.0210.0130.0090.004
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]0.1590.1270.0970.0780.0570.1510.1110.0810.0610.0430.0260.0170.0110.004


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.070 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for IC 2956 (Back to INDEX)
Helio. Radial Velocity     :      9045 +/-        8 km/s      
Redshift                   :  0.030171 +/- 0.000027        1999PASP..111..438F
Major Diameter (arcmin)    :   1.2
Minor Diameter (arcmin)    :   0.7
Magnitude and Filter       : 14.55
Classifications            : SAB(s)bc            

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:
13 Redshift data point(s)      53 photometric data point(s)      11 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for IC 2956 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    9045 +/-      8 km/s      1999PASP..111..438F
V (Kinematic LSR)          :    9048 +/-      8 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    9020 +/-      8 km/s      1991RC3.9.C...0000d
V (Local Group)            :    8987 +/-      9 km/s      1996AJ....111..794K
V (3K CMB)                 :    9350 +/-     23 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    9201 +/-     17 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    9479 +/-     26 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    9541 +/-     26 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :   123.6 +/-    8.6 Mpc      (m-M) = 35.46 +/- 0.15 mag
D (Local Group)            :   123.1 +/-    8.6 Mpc      (m-M) = 35.45 +/- 0.15 mag
D (3K CMB)                 :   128.1 +/-    9.0 Mpc      (m-M) = 35.54 +/- 0.15 mag
D (Virgo Infall only)      :   126.0 +/-    8.8 Mpc      (m-M) = 35.50 +/- 0.15 mag
D (Virgo + GA only)        :   129.8 +/-    9.1 Mpc      (m-M) = 35.57 +/- 0.15 mag
D (Virgo + GA + Shapley)   :   130.7 +/-    9.2 Mpc      (m-M) = 35.58 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     599 pc/arcsec =  0.599 kpc/arcsec =  35.94 kpc/arcmin =   2.16 Mpc/degree
Scale (Local Group)        :     597 pc/arcsec =  0.597 kpc/arcsec =  35.81 kpc/arcmin =   2.15 Mpc/degree
Scale (3K CMB)             :     621 pc/arcsec =  0.621 kpc/arcsec =  37.26 kpc/arcmin =   2.24 Mpc/degree
Scale (Virgo Infall only)  :     611 pc/arcsec =  0.611 kpc/arcsec =  36.66 kpc/arcmin =   2.20 Mpc/degree
Scale (Virgo + GA only)    :     630 pc/arcsec =  0.630 kpc/arcsec =  37.77 kpc/arcmin =   2.27 Mpc/degree
Scale(Virgo + GA + Shapley):     634 pc/arcsec =  0.634 kpc/arcsec =  38.02 kpc/arcmin =   2.28 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 = 2.630 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 9045 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.031188 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 131 Mpc (m-M) = 35.59 mag Angular-Size Distance : 123 Mpc (m-M) = 35.46 mag Co-Moving Radial Distance : 127 Mpc (m-M) = 35.52 mag Co-Moving Tangential Dist. : 127 Mpc (m-M) = 35.52 mag Co-Moving Volume : 0.00863 Gpc^3 Light Travel-Time : 0.409 Gyr Age at Redshift 0.031188 : 12.890 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 598 pc/arcsec = 0.598 kpc/arcsec = 35.90 kpc/arcmin = 2.15 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.88440; Magnitude per Unit Area = 0.1334 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 IC 2956 (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)]
UltravioletNUV (GALEX) AB 16.9554 +/- 0.0326584 mag 2012GASC..C...0000S-18.63 +/- 0.50 [mag] 4.15E+09 +/- 8.39E+08
Visualz (SDSS Model) AB 13.097 +/- 0.003 asinh mag 2007SDSS6.C...0000:-22.49 +/- 0.50 [mag] 3.59E+10 +/- 7.18E+09
Near-InfraredH^0^_T(25)_ 11.01 +/- 0.15 mag 1996ApL&C..35....1G-24.58 +/- 0.52 [mag] 4.27E+10 +/- 1.06E+10
Mid-Infrared12 microns (IRAS) <1.131E-01 Jy 1990IRASF.C...0000M < 5.82E+36 [W] < 1.51E+10
Far-Infrared100 microns (IRAS) 1.083E+00 +/- 15 % Jy 1990IRASF.C...0000M 6.68E+36 +/- 1.67E+36 [W] 1.74E+10 +/- 4.34E+09
Radio1.4GHz 5.6 +/- 0.5 milliJy 1998AJ....115.1693C 1.62E+31 +/- 3.54E+30 [W] 4.20E+04 +/- 9.20E+03
NOTE: The above quantities are derived using a Distance Modulus of 35.59 mag corresponding to
a Luminosity Distance of 131.2 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 53 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for IC 2956 (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]
POSS1 103a-O 78.0047.5865 About 25.0 B-mag arcsec^-2^ 1973UGC...C...0000N49.4330.15
K_s (2MASS "total") 96.4048.2040 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:61.0930.54
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.634 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 11 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for IC 2956 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- IC 2956SIMBAD (CDS, Strasbourg, France)
Uppsala General Catalog -- UGC 06729 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Original Zwicky Catalog -- CGCG 157-030 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query UZC Spectral Archive (60 arcsec search radius)Updated Zwicky Catalog Data (Harvard/SAO)
Morphological Catalog of Galaxies -- MCG +05-28-027 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J11451760+2646025 NASA/IPAC Infrared Science Archive (IRSA)
2MASS Extended Source Images (JHKs) -- 2MASXi J1145175+264602 NASA/IPAC Infrared Science Archive (IRSA)
version
SDSS Sky Server
IRAS Faint Source Catalog -- IRAS F11426+2702 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Catalogue of Principal Galaxies -- PGC 036625 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 036625 The Lyon/Meudon Extragalactic Database (LEDA)
NRAO/VLA Sky Survey (NVSS)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- IC 2956GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- IC 2956NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 11h45m17.5s, +26d46m03s (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)
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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