UPSA Object Registry
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2XMM J125456.8+564941

Seyfert1 SIMBAD Sy1 37 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
12h 54m 56.81s
Declination
+56° 49′ 41.4″
Galactic l, b
121.96, 60.29
Magnitude V
20.87
Redshift z
1.2635
Radial velocity
2.0188e+05 km/s

Also known as

19 identifiers

1AXG J125453+56501RXS J125458.5+5649391WGA J1254.9+56492XMM J125456.8+5649413XMM J125456.7+564941RIXOS 219-45RX J125456.9+564941RX J1254.9+5649SDSS J125456.82+564941.4SDSS J125456.83+564941.3SDSS J125456.83+564941.4XBS J125457.2+564940[A2001] Mrk 231 17.5[HSO2006] SDSS J1254+5649B[VV2000c] J125456.6+564942[VV2003c] J125456.6+564942[VV2006] J125456.6+564942[VV2010] J125456.6+564942[VV98c] J125456.6+564942

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
[VV2006] J125503.0+564953 QSO 51.81″ 19.76
SDSS J125459.24+564645.8 QSO 176.7″ —
SDSS J125447.19+564615.1 QSO 220.8″ —
SDSS J125423.23+565125.6 QSO 294.5″ —
2XMM J125451.8+564429 Seyfert2 314.6″ —
[VV2006] J125536.3+564959 QSO 324.1″ 20.24
SDSS J125428.83+565350.0 QSO 338.2″ —
[VV2006] J125535.1+565239 QSO 361.1″ 19.44
SN 2009fg Supernova 438.5″ —
[VV2000] J125524.8+565612 QSO 454.9″ 19.51
[VV2000] J125420.5+565537 QSO 462″ 20.86

Provenance

where this card came from
ArchiveRead at (UTC)Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/2xmm-j125456-8-564941 · Registry entry updated 2026-08-14.