Date and Time of the Query: 2021-12-08 T23:13:29 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 3C 273

1 objects found in NED.    


 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    3C 273                         12h29m06.7s +02d03m09s QSO    >30000  0.158339      12.8V    ...  2834    45  717  117    78   11     0 Retrieve Retrieve 1   

Detailed information for each object

Object No. 1 - 3C 273

INDEX for 3C 273
Essential Data (jump to sub-section of this query report):

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

717 Photometric data point(s) and SED   
Redshift-Independent Distances
2834 Reference(s)   
117 Position data point(s)
78 Redshift data point(s)   
11 Diameter data point(s)   
45 Note(s)   
PKS data    
HB89 data    

ESSENTIAL NOTE for 3C 273 (Back to INDEX)

Object Names Type Object Names Type
3C 273RadioSCXOGSG J122906.6+020308 XrayS
PG 1226+023 Blue* RX J1229.1+0203 XrayS
[HB89] 1226+023 QSO 1RXS J122906.5+020311 XrayS
4C +02.32 RadioSIGR J12291+0203 XrayS
PKS 1226+02 RadioSMAXI J1229+020 XrayS
WISE J122906.69+020308.6 IrS 2PBC J1229.1+0202 XrayS
WISE J122906.70+020308.6 IrS PBC J1229.1+0202 XrayS
WISEA J122906.69+020308.6 IrS SAXWFC J1229.1+0202.3 XrayS
2MASX J12290674+0203083 IrS 2XMM J122906.6+020308 XrayS
2MASS J12290669+0203085 IrS 2XMMp J122906.6+020308 XrayS
SDSS J122906.69+020308.5 * 1XMM J122906.7+020308 XrayS
GALEXASC J122906.80+020308.2 UvS 4U 1226+02 XrayS
IRAS 12265+0219 IrS H 1226+023 XrayS
IRAS F12265+0219 IrS 1H 1226+022 XrayS
LQAC 187+002 004 QSO 1ES 1226+023 XrayS
CGRaBS J1229+0203 QSO 2E 2729 XrayS
HE 1226+0219 QSO 2A 1225+022 XrayS
LAMOST J122906.70+020308.6 QSO 3A 1226+023 XrayS
PGC 041121 G XRS 12260+024 XrayS
RBS 1114 QSO XSS J12288+0200 XrayS
SFRS 204 G 3FHL J1229.2+0201 GammaS
SSTSL2 J122906.70+020308.6 IrS 3FGL J1229.1+0202 GammaS
UVQS J122906.70+020308.6 QSO SWIFT J1229.1+0202 XrayS
BZQ J1229+0203 QSO 2FGL J1229.1+0202 GammaS
PKS B1226+023 RadioS1FGL J1229.1+0203 GammaS
PKS J1229+0203 RadioS0FGL J1229.1+0202 GammaS
PMN J1229+0203 RadioS1FLE J1227+0218 GammaS
MRC 1226+023 RadioS1AGL J1228+0142 GammaS
MG1 J122906+0202 RadioS4FGL J1229.0+0202 GammaS
87GB 122633.1+021928 RadioSEGR J1229+0203 GammaS
87GB[BWE91] 1226+0219 RadioS2EG J1229+0206 GammaS
[WB92] 1226+0219 RadioS3EG J1229+0210 GammaS
FIRST J122906.7+020308 RadioS9Y-MST J1229+0200 GammaS
NVSS J122906+020305 RadioS[KWP81] 1226+02 RadioS
VLSS J1229.0+0202 RadioS[dML87] 295 G
VSOP J1229+0203 RadioS[MHH96] J122906+020306 XrayS
EUVE J1229+02.0 UvES [POS96] J122906.78+020310.0 XrayS
UITBOC 1715 VisS RX J1229.1+0203:[BEV98] 001 QSO
ON +044 RadioS[VCV2001] J122906.7+020308 QSO
CRATES J1229+0203 RadioS3C 273:[CME2001] 01 XrayS
CRATES J122906.70+020308.6 RadioSRX J1229.1+0203:[ZEH2003] 01 VisS
CTA 053 RadioS[SMI2006] 02 G
DA 324 RadioS[FBS2007] 48 G
NRAO 0400 RadioS[HRT2007] J122906+020245 RadioS
TXS 1226+023 RadioS[JBB2007] J122906.70+020308.6 RadioS
Cul 1226+023 RadioS[KRL2007] 118 XrayS
CoNFIG 137 RadioS[CW2008] J122909+020259 RadioS
CoNFIG2 J122906.41+020305.10 RadioS[LLK2008] 1226+023 RadioS
GB6 J1229+0202 RadioS[DFD2009] J1229+0203 RadioS
ICRF J122906.6+020308 RadioS[FCC2009] 096 G
IERS B1226+023 RadioS[MGL2009] 1478 QSO
JVAS J1229+0203 RadioS[WMR2009] 093 G
OCARS 1226+023 RadioS[GBW2010] CoNFIG1 135 RadioS
PAPER J187.29+02.09 RadioS[TES2010] 040 XrayS
RGB J1229+020 RadioS[SBW2011] 43 QSO
WB J1229+0203 RadioS3C 273:[PWC2011] 2843 *
WIBRaLS J1229+0203 G [BTM2013] 0619 XrayS
WMAP 170 RadioS[AHG2014] B015 G
WMAP J1229+0203 RadioS[XH2014] J187.2779+02.0525 QSO
WMAP J122906+0203 RadioS[ZZ2014] J122906.69+020308.6 RadioS
NEWPS_5yr_5s 281 RadioS[LSJ2017] J1229+0203 RadioS
NEWPS_5yr_5s_15 272 RadioS    
QVW5 J122907+0203 RadioS    
QVW7 J122906+020310 RadioS    
WMAP3-NEWPS-5S 163 RadioS    
HIP 060936 !*    
2CXO J122906.6+020308 XrayS    
CXO J122906.6+020308 XrayS    

COORDINATES for 3C 273 (Back to INDEX)

Position Reference:1995AJ....110..880J

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0) 186.6385396   2.3287383 12h26m33.2495s +02d19m43.458s  1.00E-04  7.00E-05    0
Equatorial (J2000.0) 187.2779154   2.0523883 12h29m06.6997s +02d03m08.598s  1.00E-04  7.00E-05    0
Ecliptic   (B1950.0) 185.1704321   4.7746745                              1.00E-04  7.00E-05  157
Ecliptic   (J2000.0) 185.8695081   4.7735047                              1.00E-04  7.00E-05  157
Galactic             289.9508894  64.3599708                              1.00E-04  7.00E-05  168
SuperGalactic        112.7054749  -5.6707173                              1.00E-04  7.00E-05  106
Additional detailed measurements with references are also available by clicking below:
117 Position data point(s)


TypeAs PublishedNED HomogenizedFlagReference Code
Luminosity ClassULIGULIRG...1998ApJS..119...41K
Radio Morphologyradio jetradio jet...1992A&AS...95..249L
Activity TypeFlat-Spectrum Radio Source,Flat-Spectrum Radio Source...2007ApJS..171...61H
7 Detailed Classification(s)

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]0.1120.0890.0680.0550.0400.1060.0780.0570.0430.0310.0190.0120.0080.003

Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.000 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for 3C 273 (Back to INDEX)
Helio. Radial Velocity     :     47469 +/-       20 km/s      
Redshift                   :  0.158339 +/- 0.000067       ; 1992ApJS...83...29S
Description                : blazar;Sy1;LPQ FSRQ 
Magnitude and Filter       : 12.8V
Spare 3                    :  0.49
Spare 4                    :  0.38

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:
78 Redshift data point(s)      717 photometric data point(s)      11 Diameter data point(s)      

Calculated and Corrected Velocities
V (Heliocentric)           :   47469 +/-     20 km/s      1992ApJS...83...29S
V (Kinematic LSR)          :   47471 +/-     20 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :   47382 +/-     20 km/s      1991RC3.9.C...0000d
V (Local Group)            :   47318 +/-     22 km/s      1996AJ....111..794K
V (3K CMB)                 :   47815 +/-     31 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :   47519 +/-     26 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :   47827 +/-     34 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :   47925 +/-     35 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :   649.1 +/-   45.4 Mpc      (m-M) = 39.06 +/- 0.15 mag
D (Local Group)            :   648.2 +/-   45.4 Mpc      (m-M) = 39.06 +/- 0.15 mag
D (3K CMB)                 :   655.0 +/-   45.9 Mpc      (m-M) = 39.08 +/- 0.15 mag
D (Virgo Infall only)      :   651.0 +/-   45.6 Mpc      (m-M) = 39.07 +/- 0.15 mag
D (Virgo + GA only)        :   655.2 +/-   45.9 Mpc      (m-M) = 39.08 +/- 0.15 mag
D (Virgo + GA + Shapley)   :   656.5 +/-   46.0 Mpc      (m-M) = 39.09 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :    3147 pc/arcsec =  3.147 kpc/arcsec = 188.81 kpc/arcmin =  11.33 Mpc/degree
Scale (Local Group)        :    3143 pc/arcsec =  3.143 kpc/arcsec = 188.55 kpc/arcmin =  11.31 Mpc/degree
Scale (3K CMB)             :    3176 pc/arcsec =  3.176 kpc/arcsec = 190.53 kpc/arcmin =  11.43 Mpc/degree
Scale (Virgo Infall only)  :    3156 pc/arcsec =  3.156 kpc/arcsec = 189.35 kpc/arcmin =  11.36 Mpc/degree
Scale (Virgo + GA only)    :    3176 pc/arcsec =  3.176 kpc/arcsec = 190.58 kpc/arcmin =  11.43 Mpc/degree
Scale(Virgo + GA + Shapley):    3183 pc/arcsec =  3.183 kpc/arcsec = 190.97 kpc/arcmin =  11.46 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 = 0.524 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 47469 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.159492 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 734 Mpc (m-M) = 39.33 mag Angular-Size Distance : 546 Mpc (m-M) = 38.69 mag Co-Moving Radial Distance : 633 Mpc (m-M) = 39.01 mag Co-Moving Tangential Dist. : 633 Mpc (m-M) = 39.01 mag Co-Moving Volume : 1.06 Gpc^3 Light Travel-Time : 1.918 Gyr Age at Redshift 0.159492 : 11.381 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 2647 pc/arcsec = 2.647 kpc/arcsec = 158.83 kpc/arcmin = 9.53 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.55326; Magnitude per Unit Area = 0.6427 mag
To change Cosmological Input Parameters for Derived Quantities: Enter Your Preferred Values and click on "Submit Changed Hubble Parameters for this object" button
Correct Redshift To the Reference Frame defined by: as Input for Calculation of the Distances and Cosmology-Corrected Quantities


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).

Band Apparent Mag or Flux Refcode Absolute Mag or νLν [W] νLν [L(Bolometric)]
Gamma-Ray14-195 keV (Swift) 444.8E-12 erg/cm^2^/s 2017ApJS..233...17R 2.87E+39 [W] 7.47E+12
X-Ray2-10 keV (Chandra) 654E-11 erg/cm^2^/s 2010ApJS..187..581S 4.22E+40 [W] 1.10E+14
UltravioletUVW1 (XMM-OM) 11.49 +/- 0.01 mag 2006MNRAS.366..953B-27.84 +/- 0.50 [mag] 4.63E+12 +/- 9.27E+11
VisualI (Cousins) (SHAO) 11.628 +/- 0.046 mag 2009AJ....138.1428F-27.70 +/- 0.50 [mag] 3.62E+12 +/- 7.39E+11
Near-Infrared4.5 microns (IRAC) 2.0771E+05 +/- 4.5468E+00 microJy 2013SSTSLC4.2....0C 8.94E+38 +/- 1.79E+38 [W] 2.33E+12 +/- 4.65E+11
Mid-Infrared22 microns 7 +/- 5 Jy 1970ApJ...159L.165K 6.14E+39 +/- 4.55E+39 [W] 1.60E+13 +/- 1.18E+13
Far-Infrared100 microns (IRAS) 3109. +/- 45. milliJy 1989ApJ...347...29S 6.02E+38 +/- 1.21E+38 [W] 1.56E+12 +/- 3.14E+11
Sub-Millimeter850 microns (JCMT) 16209.7 milliJy 2010MNRAS.401.1240J 3.69E+38 [W] 9.59E+11
Millimeter37 GHz (SEST) 56.72 Jy 2008A&A...485...51H 1.35E+38 [W] 3.52E+11
Radio25.0 MHz 860. +/- 43 % Jy 1969MNRAS.143..289B 1.39E+36 +/- 6.58E+35 [W] 3.61E+09 +/- 1.71E+09
NOTE: The above quantities are derived using a Distance Modulus of 39.33 mag corresponding to
a Luminosity Distance of 734.1 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 717 Photometric data point(s) available in NED.


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

Passband Apparent Major Axis
(2a) [arcsec]
Apparent Minor Axis
(2b) [arcsec]
Reference Level RefcodePhysical Major Axis
(2a) [kpc]
Physical Minor Axis
(2b) [kpc]
r (SDSS Isophotal) 34.0225.1772 25.0 mag arcsec^-2^ 2007SDSS6.C...0000:108.2880.13
K_s (LGA/2MASS "total") 44.4044.402 Diameter for "total" magnitude 2003AJ....125..525J2003AJ....125..525J141.32141.32
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 3.183 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.

Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- 3C 273SIMBAD (CDS, Strasbourg, France)
Fourth Cambridge Survey -- 4C +02.32 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J12290674+0203083 NASA/IPAC Infrared Science Archive (IRSA)
SDSS Sky Server
IRAS Faint Source Catalog -- IRAS F12265+0219 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Catalogue of Principal Galaxies -- PGC 041121 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 041121 The Lyon/Meudon Extragalactic Database (LEDA)
Parkes Radio Sources Catalogue -- PKS B1226+023 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Parkes-MIT-NRAO 4.85GHz Surveys -- PMN J1229+0203 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Original FIRST Source Catalog -- FIRST J122906.7+020308 Faint Images of the Radio Sky at Twenty-Centimeters
FIRST Survey, Version 1999Jul -- FIRST J122906.7+020308 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
NRAO/VLA Sky Survey (NVSS)
Texas Survey of radio sources at 365MHz -- TXS 1226+023 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
GB6 catalog of radio sources -- GB6 J1229+0202 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- 3C 273GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- 3C 273NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 12h29m06.7s, +02d03m09s (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)
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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