H1821+643 (Q22086878)

astronomical radio source

1 reference

1 reference

astrophysical X-ray source

1 reference

1 reference

1 reference

1 reference

7C 1821+6419

Seventh Cambridge Survey

1 reference

7C 182140.90+641929.00

Seventh Cambridge Survey

1 reference

8C 1821+643A

Eighth Cambridge Survey

1 reference

1ES 1821+64.3

Einstein Slew survey, Version No. 1

1 reference

IRAS 18216+6418

1 reference

IRAS F18216+6419

1 reference

IRAS F18216+6419A

1 reference

IRAS 18216+6419

1 reference

PSCz P18216+6418

1 reference

QSO B1821+6419

Revised and Updated Catalog of Quasi-stellar Objects

1 reference

QSO B1821+64

Revised and Updated Catalog of Quasi-stellar Objects

1 reference

QSO B1821+643

Revised and Updated Catalog of Quasi-stellar Objects

1 reference

QSO J1821+6420

Revised and Updated Catalog of Quasi-stellar Objects

1 reference

QSO B1821+642

Revised and Updated Catalog of Quasi-stellar Objects

1 reference

High-energy sources before INTEGRAL. INTEGRAL reference catalog

1RXS J182157.4+642051

1 reference

INTREF 900

1 reference

RX J182155+64207

X-ray survey of the Large Magellanic Cloud by ROSAT

1 reference

XSS J18196+6454

RXTE all-sky slew survey. Catalog of X-ray sources at |b|>10{deg}

1 reference

[SLK2004] 1455

The ISOPHOT 170{mu}m Serendipity Survey. II. The catalog of optically identified galaxies

1 reference

RX J1821.9+6420

X-ray survey of the Large Magellanic Cloud by ROSAT

1 reference

RX J1821.8+6419

X-ray survey of the Large Magellanic Cloud by ROSAT

1 reference

[VV96] J182157.3+642036

A catalogue of quasars and active nuclei (7th Edition)

1 reference

PBC J1821.5+6421

The Palermo Swift-BAT hard X-ray catalogue. II. Results after 39 months of sky survey

1 reference

redshift

0.296±0.003

1 reference

The UV-bright quasar survey (UVQS): DR1

0.2970

4 references

The first data release of the KODIAQ survey

[C II] 158 μm LUMINOSITIES AND STAR FORMATION RATE IN DUSTY STARBURSTS AND ACTIVE GALACTIC NUCLEI

The ROSAT AGN content of the 87GB 5 GHz survey: bulk properties of previously optically identified sources

Broad band energy distribution of ROSAT detected quasars. II. Radio-quiet objects

0.297

2 references

Broad band energy distribution of ROSAT detected quasars. II. Radio-quiet objects

The ROSAT AGN content of the 87GB 5 GHz survey: bulk properties of previously optically identified sources

0.297±0.0003

1 reference

Warm IRAS sources. II. Optical spectroscopy of objects from the point source catalog

0.297±0.0003

1 reference

A census of quasar-intrinsic absorption in the Hubble Space Telescope archive: systems from high-resolution echelle spectra

radial velocity

76,251±0 kilometre per second

1 reference

A census of quasar-intrinsic absorption in the Hubble Space Telescope archive: systems from high-resolution echelle spectra

14.23

1 reference

A catalogue of quasars and active nuclei: 13th edition

14.24

astronomical filter

V band

1 reference

A catalogue of quasars and active nuclei: 13th edition

epoch

J2000.0

1 reference

The large quasar reference frame (LQRF). An optical representation of the ICRS

right ascension

275.48848542 degree

1 reference

The large quasar reference frame (LQRF). An optical representation of the ICRS

declination

64.34339611 degree

1 reference