NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-17 T22:22:37 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. 12

INDEX for NGC 6845A
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
   
25 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
27 Reference(s)   
5 Position data point(s)
4 Redshift data point(s)   
15 Diameter data point(s)   
3 Note(s)   
RC3 data    

ESSENTIAL NOTE for NGC 6845A (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 6845A (Back to INDEX)
Object Names Type Object Names Type
NGC 6845AG ESO-LV 2840080 G
ESO 284-IG 008 NED01 G KTS 61B G
ESO 195722-4712.5 NED01 G LDCE 1375 NED003 G
AM 1957-471 NED01 G HDCE 1089 NED002 G
2MASX J20005841-4704130 IrS PGC 063985 G
2MASS J20005842-4704126 IrS SUMSS J200058-470411 RadioS
SGC 195722-4712.5 G v2MCG 69:[DMP2012] 1 G
     

COORDINATES for NGC 6845A (Back to INDEX)

Position Reference:20032MASX.C.......:

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0)  299.342251  -47.208611  19h57m22.14s  -47d12m31.0s  1.25E+00  1.25E+00    0
Equatorial (J2000.0)  300.243417  -47.070250  20h00m58.42s  -47d04m12.9s  1.25E+00  1.25E+00    0
Ecliptic   (B1950.0)  291.729451  -25.952630                              1.25E+00  1.25E+00    0
Ecliptic   (J2000.0)  292.429541  -25.958435                              1.25E+00  1.25E+00    0
Galactic              352.243586  -30.995658                              1.25E+00  1.25E+00    0
SuperGalactic         218.817653   25.496460                              1.25E+00  1.25E+00    0
Additional detailed measurements with references are also available by clicking below:
5 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 6845A (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 6845A (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
HierarchyTin a triple...2000ARep...44..501K
Luminosity Class3.0LC II...1991RC3.9.C...0000d
Galaxy MorphologySB(s)b: pecSB(s)b? pec...1991RC3.9.C...0000d
4 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for NGC 6845A (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]0.1960.1640.1240.0980.0680.1920.1500.1040.0770.0570.0320.0200.0140.007
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]0.2470.1960.1510.1220.0880.2340.1720.1250.0950.0670.0410.0260.0170.007


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.160 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 6845A (Back to INDEX)
Helio. Radial Velocity     :      6356 +/-       18 km/s      
Redshift                   :  0.021201 +/- 0.000060        2003MNRAS.342..939G
Major Diameter (arcmin)    :  3.7 
Minor Diameter (arcmin)    :  1.7 
Magnitude and Filter       : 14.28
Classifications            : SB(s)b: pec         

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:
4 Redshift data point(s)      25 photometric data point(s)      15 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for NGC 6845A (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    6356 +/-     18 km/s      2003MNRAS.342..939G
V (Kinematic LSR)          :    6359 +/-     18 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    6333 +/-     18 km/s      1991RC3.9.C...0000d
V (Local Group)            :    6317 +/-     18 km/s      1996AJ....111..794K
V (3K CMB)                 :    6220 +/-     20 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    6262 +/-     19 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    6655 +/-     33 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    6698 +/-     33 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    86.8 +/-    6.1 Mpc      (m-M) = 34.69 +/- 0.15 mag
D (Local Group)            :    86.5 +/-    6.1 Mpc      (m-M) = 34.69 +/- 0.15 mag
D (3K CMB)                 :    85.2 +/-    6.0 Mpc      (m-M) = 34.65 +/- 0.15 mag
D (Virgo Infall only)      :    85.8 +/-    6.0 Mpc      (m-M) = 34.67 +/- 0.15 mag
D (Virgo + GA only)        :    91.2 +/-    6.4 Mpc      (m-M) = 34.80 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    91.7 +/-    6.4 Mpc      (m-M) = 34.81 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     421 pc/arcsec =  0.421 kpc/arcsec =  25.24 kpc/arcmin =   1.51 Mpc/degree
Scale (Local Group)        :     420 pc/arcsec =  0.420 kpc/arcsec =  25.17 kpc/arcmin =   1.51 Mpc/degree
Scale (3K CMB)             :     413 pc/arcsec =  0.413 kpc/arcsec =  24.79 kpc/arcmin =   1.49 Mpc/degree
Scale (Virgo Infall only)  :     416 pc/arcsec =  0.416 kpc/arcsec =  24.95 kpc/arcmin =   1.50 Mpc/degree
Scale (Virgo + GA only)    :     442 pc/arcsec =  0.442 kpc/arcsec =  26.52 kpc/arcmin =   1.59 Mpc/degree
Scale(Virgo + GA + Shapley):     445 pc/arcsec =  0.445 kpc/arcsec =  26.69 kpc/arcmin =   1.60 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 = 3.747 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 6356 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.020749 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 86.6 Mpc (m-M) = 34.69 mag Angular-Size Distance : 83.1 Mpc (m-M) = 34.60 mag Co-Moving Radial Distance : 84.9 Mpc (m-M) = 34.64 mag Co-Moving Tangential Dist. : 84.9 Mpc (m-M) = 34.64 mag Co-Moving Volume : 0.00256 Gpc^3 Light Travel-Time : 0.274 Gyr Age at Redshift 0.020749 : 13.025 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 403 pc/arcsec = 0.403 kpc/arcsec = 24.18 kpc/arcmin = 1.45 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.92114; Magnitude per Unit Area = 0.08919 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 6845A (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 15.36 +/- 0.01 mag 2007ApJS..173..185G-19.33 +/- 0.50 [mag] 8.04E+09 +/- 1.61E+09
VisualR (Cousins) (R_T) 14.33 +/- 0.09 mag 1989ESOLV.C...0000L-20.36 +/- 0.51 [mag] 6.23E+09 +/- 1.36E+09
Near-InfraredH 10.265 +/- 0.026 mag 20032MASX.C.......:-24.42 +/- 0.50 [mag] 3.41E+10 +/- 6.86E+09
Radio843 MHz (SUMSS) 31.2 +/- 1.5 milliJy 2008SUMSS.2.1.....: 2.36E+31 +/- 4.86E+30 [W] 6.14E+04 +/- 1.26E+04
NOTE: The above quantities are derived using a Distance Modulus of 34.69 mag corresponding to
a Luminosity Distance of 86.6 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 25 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 6845A (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]
RC3 D_0 (blue) 140.70...... 25.0 B-mag arcsec^-2^ 1991RC3.9.C...0000d62.59...
K_s (2MASS "total") 101.8040.7245 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:45.2818.11
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.445 kpc/arcsec.
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 6845A Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 6845ASIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 6845AVizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J20005841-4704130 NASA/IPAC Infrared Science Archive (IRSA)
The ESO-LV catalog-- ESO-LV 2840080 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Catalogue of Principal Galaxies -- PGC 063985 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 063985 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 6845AGALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 6845ANASA/IPAC Infrared Science Archive (IRSA)
Resources for position 20h00m58.4s, -47d04m13s (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)
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)
The NRAO Data Archive System





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