NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2022-01-17 T01:28:04 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 0818-128


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    [HB89] 0818-128                08h20m57.4s -12d58m59s QSO    >30000  0.539000 SPEC 16.2R    ...   156     5   64   29     6    0     0 Retrieve Retrieve 1   

Detailed information for each object


Object No. 1 - [HB89] 0818-128

INDEX for [HB89] 0818-128
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
   Classifications
   Foreground Galactic Extinction    
   External Services
Detailed Data (NED queries):

Images
   
64 Photometric data point(s) and SED   
Spectra   
Redshift-Independent Distances
156 Reference(s)   
29 Position data point(s)
6 Redshift data point(s)   
5 Note(s)   
PKS data    
HB89 data    

ESSENTIAL NOTE for [HB89] 0818-128 (Back to INDEX)
N/A

CROSS-IDENTIFICATIONS for [HB89] 0818-128 (Back to INDEX)
Object Names Type Object Names Type
[HB89] 0818-128QSO TXS 0818-128 RadioS
PKS 0818-128 RadioSCul 0818-128 RadioS
WISE J082057.44-125859.1 IrS ICRF J082057.4-125859 RadioS
WISEA J082057.44-125859.1 IrS ICRF2 J082057.4-125859 G
2MASS J08205744-1258590 IrS IERS B0818-128 RadioS
GALEXASC J082057.49-125859.0 UvS IVS B0818-128 RadioS
6dF J0820575-125859 QSO VERA J0820-1258 RadioS
LQAC 125-012 001 QSO OCARS 0818-128 RadioS
LEDA 2825456 G WB J0820-1258 RadioS
ZBLL J0820-1259 QSO WIBRaLS J0820-1258 G
BZB J0820-1258 QSO RX J0820.9-1258 XrayS
PKS B0818-128 RadioS1RXS J082057.3-125858 XrayS
PKS J0820-1258 RadioS[VCV2001] J082057.4-125859 QSO
PMN J0820-1258 RadioS[HRT2007] J082057-125858 RadioS
MRC 0818-128 RadioS[MGL2009] 0794 QSO
NVSS J082057-125858 RadioS[MSC2011] J082057.45-125859.1 VisS
VLSS J0820.9-1258 RadioS[MSU2014] J082057-125859 QSO
VSOP J0820-1258 RadioS[ZZ2014] J082057.44-125859.1 RadioS
EGO 0818-128 VisS [LSJ2017] J0820-1258 RadioS
OJ -131 RadioS    
AT20G J082057-125859 RadioS    

COORDINATES for [HB89] 0818-128 (Back to INDEX)

Position Reference:1998AJ....116..516M

Reference    Frame     Longitude    Latitude        RA           DEC      Uncertainty Ellipse (arcsec)
                       (degrees)   (degrees)                              Semimajor Semiminor  PA(deg)
Equatorial (B1950.0) 124.6510454 -12.8236413 08h18m36.2509s -12d49m25.109s  1.15E-03  1.06E-03    0
Equatorial (J2000.0) 125.2393651 -12.9831026 08h20m57.4476s -12d58m59.169s  1.15E-03  1.06E-03    0
Ecliptic   (B1950.0) 130.5670658 -31.5183214                              1.15E-03  1.06E-03  164
Ecliptic   (J2000.0) 131.2626687 -31.5137824                              1.15E-03  1.06E-03  164
Galactic             235.2090753  13.1649108                              1.15E-03  1.06E-03  122
SuperGalactic        111.7693053 -69.0167769                              1.15E-03  1.06E-03  100
Additional detailed measurements with references are also available by clicking below:
29 Position data point(s)

REDSHIFT-INDEPENDENT DISTANCES for [HB89] 0818-128 (Back to INDEX)
 N/A 

CLASSIFICATIONS (TYPES, ATTRIBUTES) for [HB89] 0818-128 (Back to INDEX)
TypeAs PublishedNED HomogenizedFlagReference Code
Activity TypeBLBL Lac...2006A&A...455..773V
1 Detailed Classification(s)


FOREGROUND GALACTIC EXTINCTION for [HB89] 0818-128 (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]0.2580.2160.1630.1290.0900.2530.1970.1360.1010.0750.0420.0270.0180.009
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]0.3240.2570.1970.1590.1160.3070.2260.1640.1240.0880.0540.0340.0220.009


Galactic Extinction based on H I Column Densities and Galaxy Counts
(Burstein & Heiles; 1982AJ.....87.1165B) assuming Rv = 3.1:
AB = 0.300 mag
See Notes on Galactic Extinction for important caveats.

BASIC DATA for [HB89] 0818-128 (Back to INDEX)
Helio. Radial Velocity     :    161588 +/-        0 km/s SPEC 
Redshift                   :  0.539000 +/- 0.000000  SPEC ; 2020ApJS..250...37L
Description                : Opt.var.       BLLAC
Magnitude and Filter       : 16.2R
Spare 3                    :      
Spare 4                    :      

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:
6 Redshift data point(s)      64 photometric data point(s)      

QUANTITIES DERIVED FROM REDSHIFT for [HB89] 0818-128 (Details)(Back to INDEX)
Calculated and Corrected Velocities
V (Heliocentric)           :  161588 +/-      0 km/s SPEC 2020ApJS..250...37L
V (Kinematic LSR)          :  161572 +/-      0 km/s SPEC 1986MNRAS.221.1023K
V (Galactocentric GSR)     :  161399 +/-      8 km/s SPEC 1991RC3.9.C...0000d
V (Local Group)            :  161341 +/-     15 km/s SPEC 1996AJ....111..794K
V (3K CMB)                 :  161862 +/-     19 km/s SPEC 1996ApJ...473..576F
V (Virgo Infall only)      :  161420 +/-     16 km/s SPEC 2000ApJ...529..786M
V (Virgo + GA only)        :  161564 +/-     19 km/s SPEC 2000ApJ...529..786M
V (Virgo + GA + Shapley)   :  161596 +/-     19 km/s SPEC 2000ApJ...529..786M

Hubble Flow Distance and Distance Modulus (where Ho =   73.0 +/-   5 km/sec/Mpc)
D (Galactocentric GSR)     :  2210.9 +/-  154.8 Mpc      (m-M) = 41.72 +/- 0.15 mag
D (Local Group)            :  2210.1 +/-  154.7 Mpc      (m-M) = 41.72 +/- 0.15 mag
D (3K CMB)                 :  2217.3 +/-  155.2 Mpc      (m-M) = 41.73 +/- 0.15 mag
D (Virgo Infall only)      :  2211.2 +/-  154.8 Mpc      (m-M) = 41.72 +/- 0.15 mag
D (Virgo + GA only)        :  2213.2 +/-  154.9 Mpc      (m-M) = 41.73 +/- 0.15 mag
D (Virgo + GA + Shapley)   :  2213.6 +/-  155.0 Mpc      (m-M) = 41.73 +/- 0.15 mag

Scale at Hubble Flow Distances
Scale (Galactocentric GSR) :   10719 pc/arcsec = 10.719 kpc/arcsec = 643.14 kpc/arcmin =  38.59 Mpc/degree
Scale (Local Group)        :   10715 pc/arcsec = 10.715 kpc/arcsec = 642.90 kpc/arcmin =  38.57 Mpc/degree
Scale (3K CMB)             :   10750 pc/arcsec = 10.750 kpc/arcsec = 644.98 kpc/arcmin =  38.70 Mpc/degree
Scale (Virgo Infall only)  :   10720 pc/arcsec = 10.720 kpc/arcsec = 643.22 kpc/arcmin =  38.59 Mpc/degree
Scale (Virgo + GA only)    :   10730 pc/arcsec = 10.730 kpc/arcsec = 643.79 kpc/arcmin =  38.63 Mpc/degree
Scale(Virgo + GA + Shapley):   10732 pc/arcsec = 10.732 kpc/arcsec = 643.92 kpc/arcmin =  38.64 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 = 0.155 arcmin and Selected Redshift, defined by the Velocity Range: from to km/sec where V(Heliocentric) = 161588 km/sec
Cosmology-Corrected Quantities [Ho = 73.00 km/sec/Mpc, Ωmatter = 0.27, Ωvacuum = 0.73] [Redshift 0.539912 as corrected to the Reference Frame defined by the 3K Microwave Background Radiation] Luminosity Distance : 3013 Mpc (m-M) = 42.40 mag Angular-Size Distance : 1271 Mpc (m-M) = 40.52 mag Co-Moving Radial Distance : 1957 Mpc (m-M) = 41.46 mag Co-Moving Tangential Dist. : 1957 Mpc (m-M) = 41.46 mag Co-Moving Volume : 31.4 Gpc^3 Light Travel-Time : 5.153 Gyr Age at Redshift 0.539912 : 8.146 Gyr Age of Universe : 13.299 Gyr Scale (Cosmology Corrected): 6161 pc/arcsec = 6.161 kpc/arcsec = 369.63 kpc/arcmin = 22.18 Mpc/degree Surface Brightness Dimming : Flux Density per Unit Area = 0.17783; Magnitude per Unit Area = 1.875 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 [HB89] 0818-128 (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) 3.42E-12 +/- 5.26E-13 ergs sec^-1^ cm^-2^ 1994A&A...281..355B 3.71E+38 +/- 9.36E+37 [W] 9.64E+11 +/- 2.44E+11
UltravioletNUV (GALEX) AB 19.3924 +/- 0.0844098 mag 2012GASC..C...0000S-23.00 +/- 0.51 [mag] 2.31E+11 +/- 4.97E+10
VisualV (USNO) 16.395 mag 2015ApJ...810...14A-26.00 [mag] 2.20E+12
Near-InfraredK (AAO) 11.57 +/- 0.02 mag 1982MNRAS.199..969A-30.83 +/- 0.50 [mag] 5.92E+12 +/- 1.19E+12
Mid-InfraredW4 (WISE) 6.568 +/- 0.064 mag 2013wise.rept....1C-35.83 +/- 0.50 [mag] 7.57E+11 +/- 1.58E+11
Sub-Millimeter850 microns (JCMT) 225.6 milliJy 2010MNRAS.401.1240J 8.67E+37 [W] 2.25E+11
Millimeter43 GHz (KVN) 0.44 +/- 0.07 Jy 2017ApJS..228...22L 2.03E+37 +/- 5.18E+36 [W] 5.27E+10 +/- 1.35E+10
Radio80 MHz 7. Jy 1995AuJPh..48..143S 6.08E+35 [W] 1.58E+09
NOTE: The above quantities are derived using a Distance Modulus of 42.40 mag corresponding to
a Luminosity Distance of 3013.3 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.

EXTERNAL ARCHIVES AND SERVICES for [HB89] 0818-128 Help (Back to INDEX)
Resources for Object NamesSite/Service
Query 6dF Galaxy Redshift Survey -- 6dF J0820575-125859 6dF Galaxy Redshift Survey
Parkes Radio Sources Catalogue -- PKS B0818-128 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Parkes-MIT-NRAO 4.85GHz Surveys -- PMN J0820-1258 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
NRAO/VLA Sky Survey (NVSS)
Texas Survey of radio sources at 365MHz -- TXS 0818-128 VizieR Catalog Query (U.S. mirror, CfA/Harvard)
Retrieve mean data from LEDA -- PGC 2825456 The Lyon/Meudon Extragalactic Database (LEDA)
Query GALEX (NUV/FUV) Mission Archive (7.2 arcsec search radius) -- [HB89] 0818-128GALEX Mission Data Archive at MAST
Explore IRSA resources with RADAR (10 arcsec search radius) -- [HB89] 0818-128NASA/IPAC Infrared Science Archive (IRSA)
Resources for position 08h20m57.4s, -12d58m59s (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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