NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-12-12 T18:03:47 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 7121


1 objects found in NED.    

SOURCE LIST

 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 7121                       21h44m52.6s -03d37m11s G        8227  0.027442      14.28    ...    25     0   33    8     3    6     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - NGC 7121

INDEX for NGC 7121
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
   
33 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
25 Reference(s)   
8 Position data point(s)
3 Redshift data point(s)   
6 Diameter data point(s)   
RC3 data    

ESSENTIAL NOTE for NGC 7121 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for NGC 7121 (Back to INDEX)
Object Names Type Object Names Type
NGC 7121G IRAS F21422-0351 IrS
MCG -01-55-008 G AKARI J2144525-033714 IrS
2MASX J21445258-0337109 IrS 6dF J2144525-033711 G
2MASXi J2144525-033710 IrS 6dF J2144526-033711 G
2MASS J21445260-0337113 IrS GSC 5213 00768 G
GALEXASC J214452.59-033712.1 UvS NSA 149320 G
GALEXMSC J214452.54-033711.4 UvS PGC 067287 G
IRAS 21422-0351 IrS NVSS J214452-033712 RadioS
     

COORDINATES for NGC 7121 (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)  325.568154   -3.850243  21h42m16.36s  -03d51m00.9s  1.25E+00  1.25E+00    0
Equatorial (J2000.0)  326.219083   -3.619722  21h44m52.58s  -03d37m11.0s  1.25E+00  1.25E+00    0
Ecliptic   (B1950.0)  326.519462    9.372915                              1.25E+00  1.25E+00    0
Ecliptic   (J2000.0)  327.217126    9.369804                              1.25E+00  1.25E+00    0
Galactic               52.382917  -39.688394                              1.25E+00  1.25E+00    0
SuperGalactic         275.341958   43.759073                              1.25E+00  1.25E+00    0
Additional detailed measurements with references are also available by clicking below:
8 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for NGC 7121 (Back to INDEX)

2 Distances found in NED View 2 Individual Distance Measurement(s) for NGC 7121

Summary Statistics computed by NED from 2 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 7121 Distance Modulus
(mag)
Metric Distance
(Mpc)
Mean 35.42 121.500
Std. Dev. 0.08 4.950
Min. 35.36 118.000
Max. 35.48 125.000
Median 35.42 121.500

CLASSIFICATIONS (TYPES, ATTRIBUTES) for NGC 7121 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
KinematicsHI line widthHI line width...2005A&A...430..373T
Luminosity Class4.0LC II-III...1991RC3.9.C...0000d
Galaxy MorphologySB(r)bc?SB(r)bc?...1991RC3.9.C...0000d
Distance IndicatorTully-FisherTully-Fisher...2007A&A...465...71T
6 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for NGC 7121 (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]0.1170.0980.0740.0590.0410.1150.0890.0620.0460.0340.0190.0120.0080.004
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]0.1470.1170.0900.0720.0530.1400.1030.0750.0570.0400.0240.0160.0100.004


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

BASIC DATA for NGC 7121 (Back to INDEX)
Helio. Radial Velocity     :      8227 +/-        9 km/s      
Redshift                   :  0.027442 +/- 0.000030        2005A&A...430..373T
Major Diameter (arcmin)    :   1.1
Minor Diameter (arcmin)    :   0.5
Magnitude and Filter       : 14.28
Classifications            : SB(r)bc?       HII  

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:
3 Redshift data point(s)      33 photometric data point(s)      6 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for NGC 7121 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :    8227 +/-      9 km/s      2005A&A...430..373T
V (Kinematic LSR)          :    8236 +/-      9 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :    8368 +/-     11 km/s      1991RC3.9.C...0000d
V (Local Group)            :    8425 +/-     15 km/s      1996AJ....111..794K
V (3K CMB)                 :    7889 +/-     25 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :    8297 +/-     17 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :    8300 +/-     17 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :    8310 +/-     17 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :   114.6 +/-    8.0 Mpc      (m-M) = 35.30 +/- 0.15 mag
D (Local Group)            :   115.4 +/-    8.1 Mpc      (m-M) = 35.31 +/- 0.15 mag
D (3K CMB)                 :   108.1 +/-    7.6 Mpc      (m-M) = 35.17 +/- 0.15 mag
D (Virgo Infall only)      :   113.7 +/-    8.0 Mpc      (m-M) = 35.28 +/- 0.15 mag
D (Virgo + GA only)        :   113.7 +/-    8.0 Mpc      (m-M) = 35.28 +/- 0.15 mag
D (Virgo + GA + Shapley)   :   113.8 +/-    8.0 Mpc      (m-M) = 35.28 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     556 pc/arcsec =  0.556 kpc/arcsec =  33.35 kpc/arcmin =   2.00 Mpc/degree
Scale (Local Group)        :     560 pc/arcsec =  0.560 kpc/arcsec =  33.57 kpc/arcmin =   2.01 Mpc/degree
Scale (3K CMB)             :     524 pc/arcsec =  0.524 kpc/arcsec =  31.43 kpc/arcmin =   1.89 Mpc/degree
Scale (Virgo Infall only)  :     551 pc/arcsec =  0.551 kpc/arcsec =  33.06 kpc/arcmin =   1.98 Mpc/degree
Scale (Virgo + GA only)    :     551 pc/arcsec =  0.551 kpc/arcsec =  33.07 kpc/arcmin =   1.98 Mpc/degree
Scale(Virgo + GA + Shapley):     552 pc/arcsec =  0.552 kpc/arcsec =  33.11 kpc/arcmin =   1.99 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 = 3.020 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 8227 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.026313 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 110 Mpc (m-M) = 35.21 mag Angular-Size Distance : 105 Mpc (m-M) = 35.10 mag Co-Moving Radial Distance : 107 Mpc (m-M) = 35.16 mag Co-Moving Tangential Dist. : 107 Mpc (m-M) = 35.16 mag Co-Moving Volume : 0.0052 Gpc^3 Light Travel-Time : 0.346 Gyr Age at Redshift 0.026313 : 12.953 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 508 pc/arcsec = 0.508 kpc/arcsec = 30.46 kpc/arcmin = 1.83 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.90132; Magnitude per Unit Area = 0.1128 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 7121 (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)]
Ultraviolet2315 A (GALEX) AB 15.70 +/- 0.01 mag 2006ApJS..164...38I-19.72 +/- 0.14 [mag] 1.14E+10 +/- 6.66E+08
Near-InfraredH 11.247 +/- 0.039 mag 20032MASX.C.......:-24.17 +/- 0.15 [mag] 2.72E+10 +/- 1.85E+09
Mid-Infrared12 microns (IRAS) <9.876E-02 Jy 1990IRASF.C...0000M < 4.36E+36 [W] < 1.13E+10
Far-Infrared100 microns (IRAS) 2.645E+00 +/- 10 % Jy 1990IRASF.C...0000M 1.40E+37 +/- 1.61E+36 [W] 3.64E+10 +/- 4.20E+09
Radio1.4GHz 13.8 +/- 1.1 milliJy 1998AJ....115.1693C 3.41E+31 +/- 3.36E+30 [W] 8.88E+04 +/- 8.73E+03
NOTE: The above quantities are derived using an estimated Distance Modulus of (35.42 +/- 0.08) mag corresponding to
a Metric Distance of (121.500 +/- 4.950) 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 33 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for NGC 7121 (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) 65.80...... 25.0 B-mag arcsec^-2^ 1991RC3.9.C...0000d38.76...
K_s (2MASS "total") 68.3038.250 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:40.2322.53
NOTE: Physical diameters are derived using a scale of 0.5890 kpc/arcsec based on Average NED-D Metric Distance of (121.500 +/- 4.950) Mpc.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 6 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for NGC 7121 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- NGC 7121SIMBAD (CDS, Strasbourg, France)
Revised New General Catalogue -- NGC 7121VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Morphological Catalog of Galaxies -- MCG -01-55-008 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J21445258-0337109 NASA/IPAC Infrared Science Archive (IRSA)
2MASS Extended Source Images (JHKs) -- 2MASXi J2144525-033710 NASA/IPAC Infrared Science Archive (IRSA)
IRAS Point Source Catalog -- IRAS 21422-0351 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
IRAS Faint Source Catalog -- IRAS F21422-0351 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query 6dF Galaxy Redshift Survey -- 6dF J2144525-033711 6dF Galaxy Redshift Survey
Query 6dF Galaxy Redshift Survey -- 6dF J2144526-033711 6dF Galaxy Redshift Survey
Catalogue of Principal Galaxies -- PGC 067287 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 067287 The Lyon/Meudon Extragalactic Database (LEDA)
NRAO/VLA Sky Survey (NVSS)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- NGC 7121GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- NGC 7121NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 21h44m52.6s, -03d37m11s (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)
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)
The NRAO Data Archive System

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