NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-22 T20:20:02 PDT
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You have selected the following parameters to search on:

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 NGC 7655
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
   
26 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
10 Reference(s)   
4 Position data point(s)
1 Redshift data point(s)   
14 Diameter data point(s)   
2 Note(s)   
ESO data    
RC3 data    

ESSENTIAL NOTE for NGC 7655 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 7655 (Back to INDEX)
Object Names Type Object Names Type
NGC 7655G SGC 232347-6818.2 G
ESO 077- G 018 G ESO-LV 0770180 G
ESO 232347-6818.2 G APMBGC 077+001-095 G
2MASX J23264591-6801387 IrS MRSS 077-090954 G
2MASS J23264597-6801391 IrS PGC 071452 G
GALEXASC J232645.61-680139.7 UvS    

COORDINATES for NGC 7655 (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)  350.945950  -68.302852  23h23m47.03s  -68d18m10.3s  1.25E+00  1.25E+00    0
Equatorial (J2000.0)  351.691417  -68.027528  23h26m45.94s  -68d01m39.1s  1.25E+00  1.25E+00    0
Ecliptic   (B1950.0)  310.793233  -56.025808                              1.25E+00  1.25E+00    0
Ecliptic   (J2000.0)  311.498837  -56.030240                              1.25E+00  1.25E+00    0
Galactic              314.395685  -47.171495                              1.25E+00  1.25E+00    0
SuperGalactic         226.883187   -6.649325                              1.25E+00  1.25E+00    0
Additional detailed measurements with references are also available by clicking below:
4 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 7655 (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 7655 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
Galaxy Morphology(R')SA0^0?(R')SA0^0?...1991RC3.9.C...0000d
3 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for NGC 7655 (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]0.1190.1000.0750.0600.0410.1160.0910.0630.0470.0350.0190.0120.0080.004
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]0.1490.1180.0910.0730.0530.1410.1040.0750.0570.0400.0250.0160.0100.004


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.010 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for NGC 7655 (Back to INDEX)
Helio. Radial Velocity     :      3875 +/-       59 km/s      
Redshift                   :  0.012926 +/- 0.000197        2012ApJS..199...26H
Major Diameter (arcmin)    :   0.7
Minor Diameter (arcmin)    :   0.6
Magnitude and Filter       : 14.17
Classifications            : (R')SA0^0^?         

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:
1 Redshift data point(s)      26 photometric data point(s)      14 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for NGC 7655 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    3875 +/-     59 km/s      2012ApJS..199...26H
V (Kinematic LSR)          :    3867 +/-     59 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    3762 +/-     59 km/s      1991RC3.9.C...0000d
V (Local Group)            :    3731 +/-     60 km/s      1996AJ....111..794K
V (3K CMB)                 :    3779 +/-     59 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    3664 +/-     60 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    3997 +/-     64 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    4022 +/-     64 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :    51.5 +/-    3.7 Mpc      (m-M) = 33.56 +/- 0.15 mag
D (Local Group)            :    51.1 +/-    3.7 Mpc      (m-M) = 33.54 +/- 0.15 mag
D (3K CMB)                 :    51.8 +/-    3.7 Mpc      (m-M) = 33.57 +/- 0.15 mag
D (Virgo Infall only)      :    50.2 +/-    3.6 Mpc      (m-M) = 33.50 +/- 0.15 mag
D (Virgo + GA only)        :    54.8 +/-    3.9 Mpc      (m-M) = 33.69 +/- 0.15 mag
D (Virgo + GA + Shapley)   :    55.1 +/-    3.9 Mpc      (m-M) = 33.71 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     250 pc/arcsec =  0.250 kpc/arcsec =  14.99 kpc/arcmin =   0.90 Mpc/degree
Scale (Local Group)        :     248 pc/arcsec =  0.248 kpc/arcsec =  14.87 kpc/arcmin =   0.89 Mpc/degree
Scale (3K CMB)             :     251 pc/arcsec =  0.251 kpc/arcsec =  15.06 kpc/arcmin =   0.90 Mpc/degree
Scale (Virgo Infall only)  :     243 pc/arcsec =  0.243 kpc/arcsec =  14.60 kpc/arcmin =   0.88 Mpc/degree
Scale (Virgo + GA only)    :     265 pc/arcsec =  0.265 kpc/arcsec =  15.93 kpc/arcmin =   0.96 Mpc/degree
Scale(Virgo + GA + Shapley):     267 pc/arcsec =  0.267 kpc/arcsec =  16.03 kpc/arcmin =   0.96 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 = 6.239 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 3875 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.012607 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 52.3 Mpc (m-M) = 33.59 mag Angular-Size Distance : 51 Mpc (m-M) = 33.54 mag Co-Moving Radial Distance : 51.6 Mpc (m-M) = 33.56 mag Co-Moving Tangential Dist. : 51.6 Mpc (m-M) = 33.56 mag Co-Moving Volume : 0.000577 Gpc^3 Light Travel-Time : 0.167 Gyr Age at Redshift 0.012607 : 13.131 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 247 pc/arcsec = 0.247 kpc/arcsec = 14.83 kpc/arcmin = 0.89 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.95112; Magnitude per Unit Area = 0.05441 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 7655 (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 19.0684 +/- 0.0456075 mag 2012GASC..C...0000S-14.52 +/- 0.50 [mag] 9.40E+07 +/- 1.92E+07
VisualR (Cousins) (R_T) 12.85 +/- 0.09 mag 1989ESOLV.C...0000L-20.74 +/- 0.51 [mag] 8.84E+09 +/- 1.93E+09
Near-InfraredH 10.309 +/- 0.020 mag 20032MASX.C.......:-23.28 +/- 0.50 [mag] 1.19E+10 +/- 2.40E+09
NOTE: The above quantities are derived using a Distance Modulus of 33.59 mag corresponding to
a Luminosity Distance of 52.3 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 26 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 7655 (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]
ESO-LV "Quick Blue" IIa-O 90.1679.3443 27.0 B-mag arcsec^-2^ 1989ESOLV.C...0000L24.0821.19
K_s (2MASS "total") 56.7052.1655 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:15.1513.93
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.267 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 14 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for NGC 7655 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 7655SIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 7655VizieR Catalog Query (U.S. mirror, CfA/Harvard)
ESO/Uppsala Survey -- ESO 077- G 018 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J23264591-6801387 NASA/IPAC Infrared Science Archive (IRSA)
The ESO-LV catalog-- ESO-LV 0770180 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Catalogue of Principal Galaxies -- PGC 071452 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 071452 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 7655GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 7655NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 23h26m45.9s, -68d01m39s (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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