Date and Time of the Query: 2021-12-08 T23:18:55 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 4C +21.35

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    PG 1222+216                    12h24m54.4s +21d22m46s QSO    >30000  0.433826 SPEC 17.5     ...   450     4  137   59    39    9     0 Retrieve Retrieve 1   

Detailed information for each object

Object No. 1 - PG 1222+216

INDEX for PG 1222+216
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):

137 Photometric data point(s) and SED   
Redshift-Independent Distances
450 Reference(s)   
59 Position data point(s)
39 Redshift data point(s)   
9 Diameter data point(s)   
4 Note(s)   
PKS data    
HB89 data    

ESSENTIAL NOTE for PG 1222+216 (Back to INDEX)

Object Names Type Object Names Type
PG 1222+216UvES WIBRaLS J1224+2122 G
[HB89] 1222+216 QSO 2CXO J122454.4+212246 XrayS
4C +21.35 RadioSCXOGSG J122454.4+212246 XrayS
PKS 1222+21 RadioSRX J1224.9+2122 XrayS
PKS 1222+216 RadioS1RXS J122454.9+212252 XrayS
WISE J122454.46+212246.4 IrS 2PBC J1224.8+2122 XrayS
WISEA J122454.46+212246.4 IrS PBC J1224.8+2122 XrayS
2MASS J12245446+2122463 IrS 1LAC J1224+2122 QSO
2MASSi J1224544+212246 IrS 3FHL J1224.9+2122 GammaS
SDSS J122454.46+212246.3 * 3FGL J1224.9+2122 GammaS
LQAC 186+021 003 QSO SWIFT J1224.9+2118 XrayS
LAMOST J122454.46+212246.4 QSO SWIFT J1224.9+2122 XrayS
PGC 040438 G 2FGL J1224.9+2122 GammaS
LEDA 2819691 G 1FGL J1224.7+2121 GammaS
SSTSL2 J122454.46+212246.6 IrS 1FLE J1224+2118 GammaS
BZQ J1224+2122 QSO 4FGL J1224.9+2122 GammaS
PKS B1222+216 RadioS2EG J1224+2155 GammaS
PKS J1224+2122 RadioS3EG J1224+2118 GammaS
MG2 J122455+2122 RadioSTeV J1224+213 GammaS
87GB 122224.2+213918 RadioSGRO J1222+22 GammaS
87GB[BWE91] 1222+2139 RadioS9Y-MST J1224+2123 GammaS
[WB92] 1222+2139 RadioS4C +21.35:[H84] 01 QSO
NVSS J122454+212247 RadioSRX J1224.9+2122:[BEV98] 002 QSO
VLSS J1224.9+2122 RadioS[VCV2001] J122454.5+212246 QSO
VSOP J1224+2122 RadioSRX J1224.9+2122:[ZEH2003] 01 QSO
7C 1222+2139 RadioS[CRJ2004] J1224.9+2122 RadioS
S3 1222+21 RadioS[HRT2007] J122455+212245 RadioS
ON +238 RadioS[JBB2007] J122454.46+212246.4 RadioS
CRATES J1224+2122 RadioS[MGL2009] 1466 QSO
CRATES J122454.46+212246.4 RadioS[MGH2010] J122454.26+212242.20RadioS
TXS 1222+216 RadioS[LTS2012] J12249+2122 G
Cul 1222+216 RadioS[WHJ2012] J186.226929+21.37955QSO
CoNFIG 134 RadioS[BTM2013] 0614 XrayS
CoNFIG2 J122454.62+212247.20 RadioS[CKK2013] J122454.46+212246.4 QSO
ICRF J122454.4+212246 RadioS[XH2014] J186.2267+21.3794 QSO
IERS B1222+216 RadioS[PK2015] J1224+2122 RadioS
IVS B1222+216 RadioS26 Com:[GR2015] 134a VisS
JVAS J1224+2122 RadioS[LSJ2017] J1224+2122 RadioS
VCS1 J1224+2122 RadioS    
OCARS 1222+216 RadioS    
PLCKERC030 G255.00+81.65 RadioS    
RGB J1224+213 RadioS    
WB J1224+2122 RadioS    

COORDINATES for PG 1222+216 (Back to INDEX)

Position Reference:2002ApJS..141...13B

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0) 185.5975603  21.6564367 12h22m23.4144s +21d39m23.172s  1.00E-03  1.00E-03    0
Equatorial (J2000.0) 186.2269096  21.3795522 12h24m54.4583s +21d22m46.388s  1.00E-03  1.00E-03    0
Ecliptic   (B1950.0) 176.0627264  22.0021404                              1.00E-03  1.00E-03    0
Ecliptic   (J2000.0) 176.7638755  22.0020283                              1.00E-03  1.00E-03    0
Galactic             255.0736370  81.6597660                              1.00E-03  1.00E-03    0
SuperGalactic         93.8672951  -1.0729510                              1.00E-03  1.00E-03    0
Additional detailed measurements with references are also available by clicking below:
59 Position data point(s)


TypeAs PublishedNED HomogenizedFlagReference Code
Radio Morphologyradio jetradio jet...2002A&A...381..757L
Activity TypeFlat-Spectrum Radio Source,Flat-Spectrum Radio Source...2007ApJS..171...61H
3 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]0.0990.0830.0630.0500.0340.0970.0760.0520.0390.0290.0160.0100.0070.004
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]0.1270.1010.0770.0620.0450.1200.0890.0640.0490.0350.0210.0130.0090.004

See Notes on Galactic Extinction for important caveats.

BASIC DATA for PG 1222+216 (Back to INDEX)
Helio. Radial Velocity     :    130058 +/-       19 km/s SPEC 
Redshift                   :  0.433826 +/- 0.000062  SPEC ; 2016SDSSD.C...0000:
Description                : Blazar         LPQ  
Magnitude and Filter       : 17.5 
Spare 3                    :  0.20
Spare 4                    :  0.19

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:
39 Redshift data point(s)      137 photometric data point(s)      9 Diameter data point(s)      

Calculated and Corrected Velocities
V (Heliocentric)           :  130058 +/-     19 km/s SPEC 2016SDSSD.C...0000:
V (Kinematic LSR)          :  130063 +/-     19 km/s SPEC 1986MNRAS.221.1023K
V (Galactocentric GSR)     :  130032 +/-     19 km/s SPEC 1991RC3.9.C...0000d
V (Local Group)            :  129992 +/-     19 km/s SPEC 1996AJ....111..794K
V (3K CMB)                 :  130367 +/-     29 km/s SPEC 1996ApJ...473..576F
V (Virgo Infall only)      :  130191 +/-     24 km/s SPEC 2000ApJ...529..786M
V (Virgo + GA only)        :  130362 +/-     26 km/s SPEC 2000ApJ...529..786M
V (Virgo + GA + Shapley)   :  130420 +/-     27 km/s SPEC 2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :  1781.3 +/-  124.7 Mpc      (m-M) = 41.25 +/- 0.15 mag
D (Local Group)            :  1780.7 +/-  124.7 Mpc      (m-M) = 41.25 +/- 0.15 mag
D (3K CMB)                 :  1785.9 +/-  125.0 Mpc      (m-M) = 41.26 +/- 0.15 mag
D (Virgo Infall only)      :  1783.4 +/-  124.8 Mpc      (m-M) = 41.26 +/- 0.15 mag
D (Virgo + GA only)        :  1785.8 +/-  125.0 Mpc      (m-M) = 41.26 +/- 0.15 mag
D (Virgo + GA + Shapley)   :  1786.6 +/-  125.1 Mpc      (m-M) = 41.26 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :    8636 pc/arcsec =  8.636 kpc/arcsec = 518.15 kpc/arcmin =  31.09 Mpc/degree
Scale (Local Group)        :    8633 pc/arcsec =  8.633 kpc/arcsec = 517.99 kpc/arcmin =  31.08 Mpc/degree
Scale (3K CMB)             :    8658 pc/arcsec =  8.658 kpc/arcsec = 519.48 kpc/arcmin =  31.17 Mpc/degree
Scale (Virgo Infall only)  :    8646 pc/arcsec =  8.646 kpc/arcsec = 518.78 kpc/arcmin =  31.13 Mpc/degree
Scale (Virgo + GA only)    :    8658 pc/arcsec =  8.658 kpc/arcsec = 519.46 kpc/arcmin =  31.17 Mpc/degree
Scale(Virgo + GA + Shapley):    8662 pc/arcsec =  8.662 kpc/arcsec = 519.69 kpc/arcmin =  31.18 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 = 0.192 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 130058 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.434858 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 2321 Mpc (m-M) = 41.83 mag Angular-Size Distance : 1127 Mpc (m-M) = 40.26 mag Co-Moving Radial Distance : 1618 Mpc (m-M) = 41.04 mag Co-Moving Tangential Dist. : 1618 Mpc (m-M) = 41.04 mag Co-Moving Volume : 17.7 Gpc^3 Light Travel-Time : 4.409 Gyr Age at Redshift 0.434858 : 8.890 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 5466 pc/arcsec = 5.466 kpc/arcsec = 327.94 kpc/arcmin = 19.68 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.23592; Magnitude per Unit Area = 1.568 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-Ray0.1-100 GeV (Fermi) 372.9E-12 +/- 5.9E-12 erg/cm^2^/s 2012ApJS..199...31N 2.40E+40 +/- 4.82E+39 [W] 6.25E+13 +/- 1.25E+13
X-Ray15-150 keV (Swift) 1.7e-11 +/- 9.7e-12 erg/cm^2^/s 2010A&A...524A..64C 1.10E+39 +/- 6.62E+38 [W] 2.85E+12 +/- 1.72E+12
Visualz (SDSS PSF) AB 15.865 +/- 0.025 asinh mag 2007SDSS6.C...0000:-25.96 +/- 0.50 [mag] 8.77E+11 +/- 1.77E+11
Near-InfraredW2 (WISE) 9.633 +/- 0.006 mag 2013wise.rept....1C-32.20 +/- 0.50 [mag] 2.63E+12 +/- 5.26E+11
Mid-InfraredW4 (WISE) 4.707 +/- 0.028 mag 2013wise.rept....1C-37.12 +/- 0.50 [mag] 2.51E+12 +/- 5.06E+11
Millimeter43 GHz (KVN) 2.80 +/- 0.51 Jy 2017ApJS..228...22L 7.65E+37 +/- 2.07E+37 [W] 1.99E+11 +/- 5.38E+10
Radio60 MHz 16 +/- 3 Jy 1968Afz.....4..129A 6.19E+35 +/- 1.70E+35 [W] 1.61E+09 +/- 4.41E+08
NOTE: The above quantities are derived using a Distance Modulus of 41.83 mag corresponding to
a Luminosity Distance of 2321.1 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 137 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) 11.1710.16148 25.0 mag arcsec^-2^ 2007SDSS6.C...0000:96.7588.04
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 8.662 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 9 Diameter data point(s) available in NED.

Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- PG 1222+216SIMBAD (CDS, Strasbourg, France)
Fourth Cambridge Survey -- 4C +21.35 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
SDSS Sky Server
Catalogue of Principal Galaxies -- PGC 040438 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 040438 The Lyon/Meudon Extragalactic Database (LEDA)
Parkes Radio Sources Catalogue -- PKS B1222+216 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
NRAO/VLA Sky Survey (NVSS)
Texas Survey of radio sources at 365MHz -- TXS 1222+216 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 2819691 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- PG 1222+216GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- PG 1222+216NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 12h24m54.4s, +21d22m46s (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)
The NRAO Data Archive System

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