UPSA Object Registry
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Mrk 142

Seyfert1 SIMBAD Sy1 337 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
10h 25m 31.28s
Declination
+51° 40′ 34.9″
Galactic l, b
160.99, 53.27
Magnitude V
16.12
Redshift z
0.04459
Radial velocity
13,070 km/s
Proper motion
0.044, -0.083 mas/yr
Angular size
0.213′ × 0.183′

Also known as

36 identifiers

1ES 1022+51.91RXP J102532.5+5140451RXS J102531.2+5140392E 1022.3+51542E 22832EUVE J1025+51.62MASS J10253128+51403482MASX J10253130+5140351EUVE J1025+51.6FIRST J102531.3+514034Gaia DR2 848377644370267008Gaia DR3 848377644370267008[HB91] 1022+519INTREF 414IRAS Z10224+5155LEDA 30597Mrk 142PG 1022+51PG 1022+519RBS 866RX J1025.5+5140SBSG 1022+519SDSS J102531.28+514034.8SDSS J102531.28+514034.9TIC 252484016WISE J102531.29+514035.0WISEA J102531.27+514034.8[FS2003] 0559[HSN2016] J156.38+51.67[SBS92] 1028+512[VV2000c] J102531.3+514035[VV2003c] J102531.3+514035[VV2006c] J102531.3+514035[VV2010c] J102531.3+514035[VV98c] J102531.3+514035[ZEH2003] RX J1025.5+5140 1

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
SDSS J102602.35+514226.8 QSO 309.9″ —
SDSS J102458.85+514415.9 QSO 373.8″ —
SDSS J102530.74+514650.5 QSO 375.7″ —
SDSS J102500.61+514543.1 QSO 419.8″ —
SDSS J102621.63+513727.1 QSO 504.8″ —
[VV2006] J102627.7+514114 QSO 526″ 19.48
LEDA 2399255 Galaxy 526.2″ —
SDSS J102620.49+514514.7 QSO 536.2″ —

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/mrk-142 · Registry entry updated 2026-08-14.