Registry · deep sky

Mrk 509

Seyfert1 SIMBAD Sy1 1,377 papers

harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.

Right ascension: 20h 44m 09.75s
Declination: −10° 43′ 24.7″
Galactic l, b: 35.971, -29.86
Magnitude V: 13.12
Parallax: 0.0082 mas
Redshift z: 0.034696
Radial velocity: 10,221 km/s
Proper motion: 0.006, 0.028 mas/yr
Angular size: 0.5974′ × 0.4884′

Also known as

54 identifiers

0ES 2041-10.81H 2041-1081RXS J204409.9-1043301XRS 20407-1152A 2040-1152MASS J20440975-10432462MASSI J2044097-1043242MASX J20440975-10432452MAXI J2044-1062XMM J204409.7-1043243A 2041-1073XMM J204409.7-1043246dFGS gJ204409.8-104325AAVSO 2038-11ATO J311.0406-10.7235Gaia DR2 6902149058993268736Gaia DR3 6902149058993268736H 2041-107H 2041-109[HB91] 2041-109INTREF 1037IRAS 20414-1054IRAS F20414-1054LEDA 65282MAXI J2044-107Mrk 509PBC J2044.1-1043PSCz Q20414-1054QDOT B2041258-105419QSO B2041-1054QSO B2041-109QSO J2044-1043RX J204409-10435SRGA J204409.3-104325SWIFT J2044.1-1043SWIFT J2044.2-1043SWIFT J2044.2-1045SWIFT J2044.3-1045TIC 51528821[VV96] J204409.7-104324[VV98] J204409.7-104324WISE J204409.75-104324.6WISEA J204409.75-104324.7XSS J20441-1042AKARI-IRC-V1 J2044097-104324[BDW2002] q2041-1054[DML87] 509[HSN2016] J311.04-10.72[KB2007] J204409.8-104324.5[KRL2007b] 378[VV2000] J204409.7-104324[VV2003] J204409.7-104324[VV2006] J204409.7-104324[VV2010] J204409.7-104324

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
[L92b] Mark A3	Star	159.4″	14.82
UCAC2 28113774	Star	251.6″	14.54
UCAC2 28113781	Star	281.9″	15.91
[L92b] Mark A	HotSubdwarf	300.1″	13.26
ATO J310.9509-10.7943	RRLyrae	406.8″	17.49
HELLAS2XMM 50900031	Seyfert1	457.6″	20.6
ZTF J204443.20-104206.6	RRLyrae	499.2″	17.31

Provenance

where this card came from

Archive	Read at (UTC)	Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/mrk-509 · Registry entry updated 2026-08-14.