Registry · deep sky

ACO 399

ClG SIMBAD ClG 425 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: 02h 57m 56.40s
Declination: +13° 00′ 59.0″
Galactic l, b: 164.37, -39.47
Redshift z: 0.072
Radial velocity: 20,810 km/s
Angular size: 7′ × 7′

Also known as

20 identifiers

1E 0255+12.81ES 0255+12.81RXS J025750.7+1302432E 0255.1+12502E 682ACO 399ACT-CL J0257.8+1302BAX 044.4851+13.0164ClG 0255.2+1249[F81] 74FR 24MCXC J0257.8+1302PSZ1 G164.31-39.43PSZ2 G164.31-39.46PSZRX G164.31-39.45RBS 375RX J0257.8+1302RXC J0257.8+1302RXGCC 124ZwCl 440-6

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
MCG+02-08-039	BrightestCG	70.96″	—
SN 2008ih	Supernova	470.7″	—

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/aco-399 · Registry entry updated 2026-08-14.