Date and Time of the Query: 2021-12-04 T08:12:52 PST
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Redshift: Unconstrained
Include ANY Object Type: Radio
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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

NED results within 2.000 arcmin of 23h33m55.20000s, -23d43m40.6000s (Equatorial: J2000.0)

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   *PKS 2331-240                   23h33m55.2s -23d43m41s G       14300  0.047700      16.5    0.009  165     3  102   44    21    2     0 Retrieve Retrieve 1   

Detailed information for each object

Object No. 1 - PKS 2331-240

INDEX for PKS 2331-240
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):

102 Photometric data point(s) and SED   
Redshift-Independent Distances
165 Reference(s)   
44 Position data point(s)
21 Redshift data point(s)   
2 Diameter data point(s)   
3 Note(s)   
PKS data    

ESSENTIAL NOTE for PKS 2331-240 (Back to INDEX)
Additional radio sources may contribute to the WMAP flux.                       

Object Names Type Object Names Type
PKS 2331-240RadioSMWAEOR J233355-234340 RadioS
WISE J233355.23-234340.6 IrS OCARS 2331-240 RadioS
WISEA J233355.23-234340.6 IrS NVGRC J233355.2-234340 RadioS
2MASX J23335520-2343406 IrS WB J2333-2343 RadioS
2MASXi J2333552-234340 IrS WIBRaLS J2333-2343 G
2MASS J23335522-2343406 IrS WMAP J2333-2340 RadioS
GALEXASC J233355.25-234341.3 UvS WMAP J233345-2340 RadioS
6dF J2333552-234341 VisS NEWPS_5yr_5s 521 RadioS
LQAC 353-023 001 G NEWPS_5yr_5s_15 504 RadioS
APMUKS(BJ) B233117.91-240016.1G QVW5 J233335-2340 RadioS
CGRaBS J2333-2343 G QVW7 J233339-234026 RadioS
MRSS 536-059243 G WMAP3-NEWPS-5S 313 RadioS
PGC 071756 G RX J2333.9-2343 XrayS
RBS 2022 G 1RXS J233355.5-234336 XrayS
BZU J2333-2343 QSO 2PBC J2333.9-2343 XrayS
PKS B2331-240 RadioSPBC J2333.9-2343 G
PKS J2333-2343 RadioSSWIFT J2333.9-2342 XrayS
PMN J2333-2343 RadioSGRS J2333-2343 RadioS
MRC 2331-240 RadioS[KWP81] 2331-240 RadioS
NVSS J233355-234340 RadioS[VCV2001] J233355.2-234341 G
VSOP J2333-2343 RadioS[VCV2006] J233355.2-234341 G
OZ -252 RadioS[HRT2007] J233354-234342 RadioS
AT20G J233355-234340 RadioS[MEM2008] 310 G
AT20G J233355.28-234340.8 RadioS[MGL2009] 2770 QSO
CRATES J2333-2343 RadioS[MSC2011] J233355.23-234340.7 G
CRATES J233355.25-234340.9 RadioS[BTM2013] 1200 XrayS
TXS 2331-240 RadioS[MSU2014] J233355-234340 QSO
ICRF J233355.2-234340 RadioS[ZZ2014] J233355.23-234340.6 RadioS
IERS B2331-240 RadioS[LSJ2017] J2333-2343 RadioS
IVS B2331-240 RadioS    
GLEAM J233355-234342 RadioS    

COORDINATES for PKS 2331-240 (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) 352.8247849 -24.0044159 23h31m17.9484s -24d00m15.897s  5.50E-04  5.30E-04   90
Equatorial (J2000.0) 353.4801575 -23.7279603 23h33m55.2378s -23d43m40.657s  5.50E-04  5.30E-04   90
Ecliptic   (B1950.0) 343.6124739 -19.1365680                              5.50E-04  5.30E-04  115
Ecliptic   (J2000.0) 344.3132702 -19.1378078                              5.50E-04  5.30E-04  115
Galactic              39.6272504 -72.1902823                              5.50E-04  5.30E-04  165
SuperGalactic        267.5914134  11.3277179                              5.50E-04  5.30E-04  157
Additional detailed measurements with references are also available by clicking below:
44 Position data point(s)


TypeAs PublishedNED HomogenizedFlagReference Code
Activity TypeFlat-Spectrum Radio Source,Flat-Spectrum Radio Source...2007ApJS..171...61H
2 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]0.1230.1030.0780.0620.0430.1210.0940.0650.0480.0360.0200.0130.0090.004
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]0.1590.1260.0970.0780.0570.1510.1110.0800.0610.0430.0260.0170.0110.004

Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.030 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for PKS 2331-240 (Back to INDEX)
Helio. Radial Velocity     :     14300 +/-     1499 km/s      
Redshift                   :  0.047700 +/- 0.005000        1976ApJS...31..143W
Major Diameter (arcmin)    :  0.49
Minor Diameter (arcmin)    :  0.40
Magnitude and Filter       : 16.5 
Classifications            : Elliptical     Sy?  

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:
21 Redshift data point(s)      102 photometric data point(s)      2 Diameter data point(s)      

Calculated and Corrected Velocities
V (Heliocentric)           :   14300 +/-   1499 km/s      1976ApJS...31..143W
V (Kinematic LSR)          :   14298 +/-   1499 km/s      1986MNRAS.221.1023K
V (Galactocentric GSR)     :   14341 +/-   1499 km/s      1991RC3.9.C...0000d
V (Local Group)            :   14379 +/-   1499 km/s      1996AJ....111..794K
V (3K CMB)                 :   13983 +/-   1499 km/s      1996ApJ...473..576F
V (Virgo Infall only)      :   14201 +/-   1499 km/s      2000ApJ...529..786M
V (Virgo + GA only)        :   14185 +/-   1499 km/s      2000ApJ...529..786M
V (Virgo + GA + Shapley)   :   14187 +/-   1499 km/s      2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :   196.5 +/-   24.7 Mpc      (m-M) = 36.47 +/- 0.26 mag
D (Local Group)            :   197.0 +/-   24.7 Mpc      (m-M) = 36.47 +/- 0.26 mag
D (3K CMB)                 :   191.5 +/-   24.5 Mpc      (m-M) = 36.41 +/- 0.26 mag
D (Virgo Infall only)      :   194.5 +/-   24.6 Mpc      (m-M) = 36.44 +/- 0.26 mag
D (Virgo + GA only)        :   194.3 +/-   24.6 Mpc      (m-M) = 36.44 +/- 0.26 mag
D (Virgo + GA + Shapley)   :   194.3 +/-   24.6 Mpc      (m-M) = 36.44 +/- 0.26 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :     952 pc/arcsec =  0.952 kpc/arcsec =  57.15 kpc/arcmin =   3.43 Mpc/degree
Scale (Local Group)        :     955 pc/arcsec =  0.955 kpc/arcsec =  57.30 kpc/arcmin =   3.44 Mpc/degree
Scale (3K CMB)             :     929 pc/arcsec =  0.929 kpc/arcsec =  55.72 kpc/arcmin =   3.34 Mpc/degree
Scale (Virgo Infall only)  :     943 pc/arcsec =  0.943 kpc/arcsec =  56.59 kpc/arcmin =   3.40 Mpc/degree
Scale (Virgo + GA only)    :     942 pc/arcsec =  0.942 kpc/arcsec =  56.52 kpc/arcmin =   3.39 Mpc/degree
Scale(Virgo + GA + Shapley):     942 pc/arcsec =  0.942 kpc/arcsec =  56.53 kpc/arcmin =   3.39 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 = 1.769 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 14300 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.046641 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 199 Mpc (m-M) = 36.49 mag Angular-Size Distance : 181 Mpc (m-M) = 36.29 mag Co-Moving Radial Distance : 190 Mpc (m-M) = 36.39 mag Co-Moving Tangential Dist. : 190 Mpc (m-M) = 36.39 mag Co-Moving Volume : 0.0286 Gpc^3 Light Travel-Time : 0.605 Gyr Age at Redshift 0.046641 : 12.694 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 879 pc/arcsec = 0.879 kpc/arcsec = 52.73 kpc/arcmin = 3.16 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.83331; Magnitude per Unit Area = 0.198 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) 16.10E-12 +/- 12.71E-12 erg/s/cm^2^ 2018ApJS..235....4O 7.59E+36 +/- 6.18E+36 [W] 1.97E+10 +/- 1.61E+10
X-Ray15-150 keV (Swift) 1.3e-11 +/- 7.7e-12 erg/cm^2^/s 2010A&A...524A..64C 6.13E+36 +/- 3.83E+36 [W] 1.59E+10 +/- 9.97E+09
UltravioletNUV (GALEX) AB 19.4324 +/- 0.0985582 mag 2012GASC..C...0000S-17.06 +/- 0.51 [mag] 9.69E+08 +/- 2.13E+08
VisualR 11.21 mag 2008ApJS..175...97H-25.28 [mag] 5.80E+11
Near-InfraredW2 (WISE) 10.135 +/- 0.006 mag 2013wise.rept....1C-26.35 +/- 0.50 [mag] 1.21E+10 +/- 2.43E+09
Mid-InfraredW4 (WISE) 5.314 +/- 0.035 mag 2013wise.rept....1C-31.18 +/- 0.50 [mag] 1.04E+10 +/- 2.12E+09
Far-Infrared250 microns (SPIRE) 0.406 +/- 0.023 Jy 2016MNRAS.456.3335S 2.30E+36 +/- 4.78E+35 [W] 5.98E+09 +/- 1.24E+09
Sub-Millimeter500 microns (SPIRE) 0.569 +/- 0.033 Jy 2016MNRAS.456.3335S 1.61E+36 +/- 3.35E+35 [W] 4.19E+09 +/- 8.72E+08
Millimeter41 GHz (WMAP) 1200 milliJy 2009A&A...508..107G 2.32E+35 [W] 6.04E+08
Radio8.6 GHz (ATCA) 1.47 +/- 0.22 Jy 2008MNRAS.384..775M 5.99E+34 +/- 1.50E+34 [W] 1.56E+08 +/- 3.89E+07
NOTE: The above quantities are derived using a Distance Modulus of 36.49 mag corresponding to
a Luminosity Distance of 198.6 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 102 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]
K_s (2MASS "total") 44.6036.5770 Diameter for "total" magnitude 20032MASX.C.......:20032MASX.C.......:42.0234.46
NOTE: At z <= 0.5, physical diameters are derived using a Scale at the Hubble Flow Distance (Virgo + GA + Shapley) of 0.942 kpc/arcsec.
The quantities quoted above have not necessarily been corrected for foreground extinction.

View details for 2 Diameter data point(s) available in NED.

Resources for Object NamesSite/Service
Query SIMBAD by primary NED object name -- PKS 2331-240SIMBAD (CDS, Strasbourg, France)
2MASS Extended Source Images (JHKs) -- 2MASX J23335520-2343406 NASA/IPAC Infrared Science Archive (IRSA)
2MASS Extended Source Images (JHKs) -- 2MASXi J2333552-234340 NASA/IPAC Infrared Science Archive (IRSA)
Query 6dF Galaxy Redshift Survey -- 6dF J2333552-234341 6dF Galaxy Redshift Survey
Catalogue of Principal Galaxies -- PGC 071756 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 071756 The Lyon/Meudon Extragalactic Database (LEDA)
Parkes Radio Sources Catalogue -- PKS B2331-240 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Parkes-MIT-NRAO 4.85GHz Surveys -- PMN J2333-2343 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
NRAO/VLA Sky Survey (NVSS)
Texas Survey of radio sources at 365MHz -- TXS 2331-240 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- PKS 2331-240GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- PKS 2331-240NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 23h33m55.2s, -23d43m41s (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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