Registry · deep sky

ACO 2261

ClG SIMBAD ClG 372 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: 17h 22m 26.88s
Declination: +32° 07′ 58.1″
Galactic l, b: 55.589, 31.86
Redshift z: 0.2242
Radial velocity: 59,830 km/s
Angular size: 13.76′ × 13.76′

Also known as

26 identifiers

1RXS J172226.7+3207522E 1720.5+32112E 38923U 1706+324U 1720+34ACO 2261BAX 260.6181+32.1535INTREF 775MCXC J1722.4+3208NSC J172238+320909PLCKESZ G055.60+31.86PSZ1 G055.58+31.87PSZ2 G055.59+31.85PSZRX G055.58+31.86RBS 1641RX J1722.4+3207RX J1722.4+3208RXC J1722.4+3208RXGCC 715XCLASS 3417XMMXCS J172227.0+320758.0XMMXCS J172227.1+320756.2XSS J17214+3239[B2017] 2500[RRB2014] RM J172227.2+320757.2[WHL2012] J172227.2+320757

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
NVSS J172227+320757	RadioG	3.962″	—
DES J172223.44+320650.9	RadioG	79.96″	—
[RGD2013] J172213.019+320651.768	BrightestCG	187.8″	—
SDSS J172219.62+320445.1	QSO	213.8″	—
[VV2000] J172237.4+321119	QSO	241.2″	—
SDSS J172234.53+321238.7	**	297.1″	—
LEDA 1979877	GtowardsCl	348.8″	—
3XMM J172223.7+320127	LINER	391.9″	—
GRB 981125A	gammaBurst	418.4″	—
3XMM J172255.2+320306	Seyfert1	462.9″	19.45
SDSS J172220.30+315952.8	WhiteDwarf	492.3″	—

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-2261 · Registry entry updated 2026-08-14.