(Q3232769)

Two Micron All-Sky Survey, Extended source catalogue

1 reference

MCG+10-19-004

Morphological Catalogue of Galaxies

1 reference

QSO B1254+571

Revised and Updated Catalog of Quasi-stellar Objects

1 reference

7C 125404.70+570833.00

Seventh Cambridge Survey

1 reference

6C 125407+570842

Sixth Cambridge Survey of radio sources

1 reference

NVSS J125614+565223

1 reference

Z 1254.0+5709

Catalogue of Galaxies and Clusters of Galaxies

1 reference

Z 294-4

Catalogue of Galaxies and Clusters of Galaxies

1 reference

Z 293-45

Catalogue of Galaxies and Clusters of Galaxies

1 reference

FIRST J125614.2+565225

Faint Images of the Radio Sky at Twenty-Centimeters

1 reference

ICRF J125614.2+565225

International Celestial Reference Frame

1 reference

UZC J125614.3+565225

Updated Zwicky Catalog

1 reference

PSCz Q12540+5708

1 reference

SDSS J125614.22+565225.2

Sloan Digital Sky Survey

1 reference

LEDA 44117

Lyon-Meudon Extragalactic Database

1 reference

Anon 1254+57

Asiago Supernova Catalogue (Version 2008-Mar)

1 reference

CJF B1254+571

A Complete Flux-Density--limited VLBI Survey of 293 Flat-Spectrum Radio Sources

1 reference

GB6 B1254+5708

The GB6 catalog of radio sources

1 reference

INTREF 531

High-energy sources before INTEGRAL. INTEGRAL reference catalog

1 reference

A new catalog of 30239 1.4 GHz sources

Gaia DR1 1577113296762389888

1 reference

WB 1254+5708

1 reference

[DML87] 663

Warm IRAS sources. I. A catalogue of AGN candidates from the point source catalog

1 reference

[HB91] 1254+571

An optical catalog of extragalactic emission-line objects similar to quasi-stellar objects

1 reference

[SLK2004] 753

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

1 reference

[VDD93] 175

IRAS CPC observations of galaxies. I. Catalog and atlas

1 reference

time of discovery or invention

Gaia DR2 1577113301057089664

1 reference

1969

1 reference

imported from Wikimedia project

1 reference

0.04147

1 reference

imported from Wikimedia project

English Wikipedia

Wikimedia import URL

https://en.wikipedia.org/w/index.php?title=Markarian_231&oldid=827961810

0.042

1 reference

The most luminous starbursts in the Universe

0.0422±0.00003

1 reference

Molecular gas mass and far-infrared emission from distant luminous galaxies

0.0410

1 reference

An optical catalog of extragalactic emission-line objects similar to quasi-stellar objects

distance from Earth

179.6 megaparsec

1 reference

The Star Formation Reference Survey. I. Survey description and basic data

184.0 megaparsec

1 reference

The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. XXVIII. Combining the Constraints on the Hubble Constant

parallax

0.0057±0.0163 milliarcsecond

1 reference

declination component of proper motion

−0.053±0.022 milliarcsecond per year

1 reference

right ascension component of proper motion

0.008±0.023 milliarcsecond per year

1 reference

radial velocity

13,682.6±97.4 kilometre per second

1 reference

Hunting for supermassive black holes in nearby galaxies with the Hobby-Eberly telescope

12,518 kilometre per second

1 reference

Galaxy groups: a 2MASS catalog

21,300 kilometre per second

1 reference

Uppsala General Catalogue of Galaxies. Data for 12,921 galaxies north of delta =-2 30

galaxy morphological type

3

1 reference

The EFIGI catalogue of 4458 nearby galaxies with detailed morphology

apparent magnitude

13.84

imported from Wikimedia project

V band

2 references

Russian Wikipedia

A catalogue of quasars and active nuclei: 13th edition

14.68

B band

1 reference

A catalogue of quasars and active nuclei: 13th edition

13.5495±0.0021

1 reference

11.024±0.02

1 reference

The Two Micron All Sky Survey (2MASS)

9.889±0.019

H band

1 reference

The Two Micron All Sky Survey (2MASS)

8.813±0.017

K band

1 reference

The Two Micron All Sky Survey (2MASS)

15.212±0.005

u' band

1 reference

14.539±0.003

g' band

1 reference

13.714±0.008

r' band

1 reference

12.985±0.005

i' band

1 reference

13.058±0.004

z' band

1 reference

1 reference

194.05930874555820 degree

1 reference

declination

56.87367737644250 degree

1 reference