Registry · deep sky

4U 2129+12

LowMassXBin SIMBAD LXB 326 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: 21h 29m 58.31s
Declination: +12° 10′ 02.7″
Galactic l, b: 65.013, -27.31
Magnitude V: 15.8

Also known as

34 identifiers

1E 2127+11.91ES 2127+11.91H 2128+1201M 2131+1181RXS J212958.4+1209592MAXI J2130+1222S 2127+1192U 2134+113A 2127+1193U 2131+114U 2127+114U 2127+1194U 2129+114U 2129+1194U 2129+12AT 2122+076[BM83] X2127+119Cl* NGC 7078 AC 211Cl* NGC 7078 FP 125Cl* NGC 7078 ZK 48CXO J212958.1+121002EXO 2127+119Ginga 2127+119INTREF 1055PBC J2129.9+1210SRGA J212958.5+121000SWIFT J2129.9+1209XB 2127+11XB 2127+119XSS J21296+1208[KGB96] NGC 7078 1[KRL2007b] 386[WA2001] M 15 X-1[ZGV2011] 8

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
Cl* NGC 7078 SAW V128	RRLyrae	1.387″	14.88
Cl* NGC 7078 CCV V1	CataclyV*	1.449″	—
M 15	GlobCluster	1.492″	—
Cl* NGC 7078 AC 215	Star	1.58″	14.6
PSR B2127+11	Pulsar	1.731″	—
Cl* NGC 7078 ZK 50	RRLyrae	2.648″	15.79
PSR J2129+1210D	Pulsar	2.984″	—
Cl* NGC 7078 SAW V138	RRLyrae	3.056″	15.69
Cl* NGC 7078 AC 224	Star	3.456″	14.2
CXOU J212958.1+121002	XrayBin	3.702″	16.6
PSR B2127+11H	Pulsar	3.877″	—

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/4u-2129-12 · Registry entry updated 2026-08-14.