UPSA Object Registry
Registry · deep sky

ACO 521

ClG SIMBAD ClG 280 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
04h 54m 08.60s
Declination
−10° 14′ 39.0″
Galactic l, b
208.83, -30.66
Redshift z
0.247
Radial velocity
65,122 km/s
Angular size
5′ × 5′

Also known as

13 identifiers

1RXS J045409.6-1014322E 0451.7-10172E 1171ACO 521ACT-CL J0454.1-1013BAX 073.5422-10.2531MCXC J0454.1-1014PSZ1 G208.80-30.67PSZ2 G208.80-30.67PSZRX G208.82-30.67RBS 604RXC J0454.1-1014XCLASS 3114

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
2MASX J04540687-1013247 BrightestCG 78.48″ —
[RSK2010] A 521 1 LensedG 85.14″ —
Gaia DR3 3181694975259919104 WhiteDwarf 89.2″ —

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/aco-521 · Registry entry updated 2026-08-14.