NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2022-01-23 T01:38:34 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 0251+393


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    B3 0251+393                    02h54m42.6s +39d31m35s G      >30000  0.289000      17.0     ...    74     2   64   18     4    4     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - B3 0251+393

INDEX for B3 0251+393
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
   
64 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
74 Reference(s)   
18 Position data point(s)
4 Redshift data point(s)   
4 Diameter data point(s)   
2 Note(s)   

ESSENTIAL NOTE for B3 0251+393 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for B3 0251+393 (Back to INDEX)
Object Names Type Object Names Type
B3 0251+393RadioSJVAS J0254+3931 RadioS
WISE J025442.63+393134.6 IrS VCS1 J0254+3931 RadioS
WISEA J025442.63+393134.6 IrS OCARS 0251+393 RadioS
2MASX J02544263+3931348 IrS RGB J0254+395 RadioS
2MASS J02544262+3931347 IrS WB J0254+3931 RadioS
2MASSi J0254426+393134 IrS WIBRaLS J0254+3931 G
GALEXASC J025442.68+393134.7 UvS 2CXO J025442.6+393134 XrayS
LQAC 043+039 001 G CXOGSG J025442.6+393134 XrayS
CGRaBS J0254+3931 QSO RX J0254.6+3931 XrayS
BZQ J0254+3931 QSO 1RXS J025441.4+393143 XrayS
87GB 025131.9+391921 RadioS[KMB96] J0254+395 XrayS
87GB[BWE91] 0251+3919 RadioS[MBI96] 0251+393 G
[WB92] 0251+3919 RadioS[BSF97] J025442.63+393134.8 RadioS
NVSS J025442+393133 RadioS[MFN99] 0251+393 Blue*
CRATES J0254+3931 RadioS[VCV2001] J025442.6+393134 QSO
CRATES J025442.63+393134.7 RadioS[HRT2007] J025443+393138 RadioS
CJ2 0251+393 RadioS[JBB2007] J025442.63+393134.7 RadioS
EF B0251+3919 RadioS[MGL2009] 0319 QSO
ICRF J025442.6+393134 RadioS[MGD2014] 0251.5+3919 RadioS
IERS B0251+393 RadioS[LSJ2017] J0254+3931 RadioS
IVS B0251+393 RadioS    
     

COORDINATES for B3 0251+393 (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)  42.8801142  39.3236697 02h51m31.2274s +39d19m25.211s  1.00E-03  1.00E-03    0
Equatorial (J2000.0)  43.6776337  39.5263086 02h54m42.6321s +39d31m34.711s  1.00E-03  1.00E-03    0
Ecliptic   (B1950.0)  52.3617968  21.8351795                              1.00E-03  1.00E-03    0
Ecliptic   (J2000.0)  53.0588731  21.8406526                              1.00E-03  1.00E-03    0
Galactic             147.3981089 -17.4179993                              1.00E-03  1.00E-03    0
SuperGalactic        343.4485163 -11.4252184                              1.00E-03  1.00E-03    0
Additional detailed measurements with references are also available by clicking below:
18 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for B3 0251+393 (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for B3 0251+393 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
Activity TypeFlat-Spectrum Radio Source,Flat-Spectrum Radio Source...2007ApJS..171...61H
2 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for B3 0251+393 (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]0.4310.3610.2730.2160.1500.4220.3290.2270.1690.1260.0710.0450.0300.015
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]0.5400.4280.3290.2650.1930.5120.3770.2730.2070.1470.0900.0570.0360.015


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.360 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for B3 0251+393 (Back to INDEX)
Helio. Radial Velocity     :     86640 +/-      300 km/s      
Redshift                   :  0.289000 +/- 0.001000        1996MNRAS.281..425M
Major Diameter (arcmin)    :      
Minor Diameter (arcmin)    :      
Magnitude and Filter       : 17.0 
Classifications            : FSRQ           BLRG 

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)      64 photometric data point(s)      4 Diameter data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for B3 0251+393 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :   86640 +/-    300 km/s      1996MNRAS.281..425M
V (Kinematic LSR)          :   86637 +/-    300 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :   86750 +/-    300 km/s      1991RC3.9.C...0000d
V (Local Group)            :   86822 +/-    300 km/s      1996AJ....111..794K
V (3K CMB)                 :   86451 +/-    300 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :   86729 +/-    300 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :   86367 +/-    301 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :   86298 +/-    301 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :  1188.4 +/-   83.3 Mpc      (m-M) = 40.37 +/- 0.15 mag
D (Local Group)            :  1189.3 +/-   83.4 Mpc      (m-M) = 40.38 +/- 0.15 mag
D (3K CMB)                 :  1184.3 +/-   83.0 Mpc      (m-M) = 40.37 +/- 0.15 mag
D (Virgo Infall only)      :  1188.1 +/-   83.3 Mpc      (m-M) = 40.37 +/- 0.15 mag
D (Virgo + GA only)        :  1183.1 +/-   82.9 Mpc      (m-M) = 40.37 +/- 0.15 mag
D (Virgo + GA + Shapley)   :  1182.2 +/-   82.9 Mpc      (m-M) = 40.36 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :    5761 pc/arcsec =  5.761 kpc/arcsec = 345.68 kpc/arcmin =  20.74 Mpc/degree
Scale (Local Group)        :    5766 pc/arcsec =  5.766 kpc/arcsec = 345.96 kpc/arcmin =  20.76 Mpc/degree
Scale (3K CMB)             :    5741 pc/arcsec =  5.741 kpc/arcsec = 344.49 kpc/arcmin =  20.67 Mpc/degree
Scale (Virgo Infall only)  :    5760 pc/arcsec =  5.760 kpc/arcsec = 345.60 kpc/arcmin =  20.74 Mpc/degree
Scale (Virgo + GA only)    :    5736 pc/arcsec =  5.736 kpc/arcsec = 344.15 kpc/arcmin =  20.65 Mpc/degree
Scale(Virgo + GA + Shapley):    5731 pc/arcsec =  5.731 kpc/arcsec = 343.88 kpc/arcmin =  20.63 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 = 0.291 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 86640 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.288370 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 1432 Mpc (m-M) = 40.78 mag Angular-Size Distance : 863 Mpc (m-M) = 39.68 mag Co-Moving Radial Distance : 1111 Mpc (m-M) = 40.23 mag Co-Moving Tangential Dist. : 1111 Mpc (m-M) = 40.23 mag Co-Moving Volume : 5.75 Gpc^3 Light Travel-Time : 3.194 Gyr Age at Redshift 0.288370 : 10.105 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 4182 pc/arcsec = 4.182 kpc/arcsec = 250.90 kpc/arcmin = 15.05 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.36294; Magnitude per Unit Area = 1.1 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 B3 0251+393 (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)]
X-Ray0.1-2.4 keV (ROSAT) 3.28E-12 +/- 0.57E-12 erg/cm^2^/s 2007A&A...476..759B 8.07E+37 +/- 2.14E+37 [W] 2.10E+11 +/- 5.56E+10
UltravioletNUV (GALEX) AB 19.0506 +/- 0.0864025 mag 2012GASC..C...0000S-21.73 +/- 0.51 [mag] 7.17E+10 +/- 1.54E+10
VisualR 16.91 mag 2008ApJS..175...97H-23.87 [mag] 1.58E+11
Near-InfraredW2 (WISE) 12.216 +/- 0.011 mag 2013wise.rept....1C-28.56 +/- 0.50 [mag] 9.26E+10 +/- 1.85E+10
Mid-InfraredW4 (WISE) 7.095 +/- 0.136 mag 2013wise.rept....1C-33.68 +/- 0.52 [mag] 1.05E+11 +/- 2.48E+10
Millimeter43 GHz (KVN) 0.41 +/- 0.08 Jy 2017ApJS..228...22L 4.26E+36 +/- 1.19E+36 [W] 1.11E+10 +/- 3.10E+09
Radio4.85 GHz 446 +/- 15 % milliJy 1991ApJS...75....1B 5.31E+35 +/- 1.33E+35 [W] 1.38E+09 +/- 3.45E+08
NOTE: The above quantities are derived using a Distance Modulus of 40.78 mag corresponding to
a Luminosity Distance of 1431.7 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 64 Photometric data point(s) available in NED.

QUICK-LOOK ANGULAR & PHYSICAL DIAMETERS for B3 0251+393 (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]
K_s (2MASS "total") 20.1020.1090 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:115.20115.20
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 5.731 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 4 Diameter data point(s) available in NED.

EXTERNAL ARCHIVES AND SERVICES for B3 0251+393 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- B3 0251+393SIMBAD (CDS, Strasbourg, France)
The Third Bologna Survey -- B3 0251+393VizieR Catalog Query (U.S. mirror, CfA/Harvard)
2MASS Extended Source Images (JHKs) -- 2MASX J02544263+3931348 NASA/IPAC Infrared Science Archive (IRSA)
NRAO/VLA Sky Survey (NVSS)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- B3 0251+393GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- B3 0251+393NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 02h54m42.6s, +39d31m35s (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)
 Size:    Contours (PS)  JPEG  FITS File 
NRAO/VLA Sky Survey (NVSS)
The NRAO Data Archive System

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