(Q74705294)

USNO-A2.0 0825-00546014

1 reference

GALEX 2693022852033021136

1 reference

2MASS J02203951-0308202

1 reference

SWIRE J022039.48-030820.3

1 reference

[VV2010] J022039.5-030820

1 reference

2XLSSd J022039.4-030820

1 reference

SDSS J022039.48-030820.3

catalog

Sloan Digital Sky Survey

1 reference

3XLSS J022039.4-030820

1 reference

Gaia DR2 2493335374114466816

1 reference

0.4519

1 reference

A catalog of quasar properties from the Baryon Oscillation Spectroscopic Survey

0.45189±0.00003

1 reference

The eleventh and twelfth data releases of the Sloan Digital Sky Survey: final data from SDSS-III

0.451887

2 references

The Sloan Digital Sky Survey Quasar Catalog: Twelfth data release

Constraint on the time variation of the fine-structure constant with the SDSS-III/BOSS DR12 quasar sample

0.451887±0.000025

1 reference

The Sloan Digital Sky Survey Quasar Catalog: Twelfth data release

0.451

1 reference

The Spitzer mid-infrared active galactic nucleus survey. I. Optical and near-infrared spectroscopy of obscured candidates and normal active galactic nuclei selected in the mid-infrared

0.637±0.03

1 reference

declination component of proper motion

The XXL Survey

0.056±0.356 milliarcsecond per year

1 reference

right ascension component of proper motion

−0.659±0.459 milliarcsecond per year

1 reference

radial velocity

106,874±0 kilometre per second

1 reference

A spectroscopic survey of X-ray-selected AGNs in the northern XMM-XXL field

17.5±0.3

1 reference

18±0.4

1 reference

16.796±0.147

1 reference

VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)

16.041±0.169

H band

1 reference

VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)

15.499±0.18

K band

1 reference

VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)

18.81±0.024

u' band

1 reference

The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey

18.479±0.007

g' band

1 reference

The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey

18.336±0.008

r' band

1 reference

The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey

18.1±0.009

i' band

1 reference

The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey

18.014±0.022

z' band

1 reference

The ninth data release of the Sloan Digital Sky Survey: first spectroscopic data from the SDSS-III baryon oscillation spectroscopic survey

18.2642±0.0061

1 reference

1 reference

35.16454883045460 degree

1 reference

declination

−3.13899563546990 degree

1 reference