Registry · deep sky

ACO 644

ClG SIMBAD ClG 243 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: 08h 17m 26.11s
Declination: −07° 31′ 12.7″
Galactic l, b: 229.94, 15.29
Redshift z: 0.0704
Radial velocity: 20,364 km/s

Also known as

22 identifiers

1E 0815-07.31ES 0814-07.31H 0814-0731RXS J081725.5-0731002A 0815-0752E 0814.9-07212E 19612MAXI J0817-074ACO 644BAX 124.3602-07.5892CIZA J0817.4-0730MCXC J0817.4-0730PBC J0817.4-0733PLCKESZ G229.94+15.29PSZ1 G229.92+15.28PSZ2 G229.93+15.30PSZRX G229.94+15.30RXC J0817.4-0730SRGA J081726.1-073113XSS J08165-0739[OKM2018] SWIFT J0817.5-0747[WHL2012] J081725.6-073045

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
2MASX J08172559-0730455	BrightestCG	28.19″	15.94
CXOU J081739.6-073309	Seyfert1	231.6″	16.69
LEDA 1018807	AGN Candidate	494.1″	—
2MASX J08174810-0737319	AGN	500.9″	16.16

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-644 · Registry entry updated 2026-08-14.