The sky around HCG 90, 3° across, north up low-power eyepiece, 1° NE 1°
The sky around HCG 90 at true scale, north up and east left, with stars to magnitude 8. The circles show the field of a low-power eyepiece and of 10×50 binoculars.

NGC 7176 · PGC 67883 · ESO 466-041

HCG 90

Galaxy group (E + Sa + Sb) in Piscis Austrinus

Galaxy group (E + Sa + Sb) in Piscis Austrinus, 102 million light-years away.

PISCIS AUSTRINUS

The box shows where HCG 90 sits in Piscis Austrinus.

Constellation
Piscis AustrinusPsA
Magnitude
12.0visual
Size
1.1′ × 54″about 32,600 light-years
Distance
102 million lylight-years
Best month
Octoberat 9 pm
Best with
Telescope

HCG 90 is a galaxy group (E + Sa + Sb) in Piscis Austrinus, 102 million light-years away

HCG 90 (NGC 7176, PGC 67883, ESO 466-041, NGC 7172, PGC 67874) is a galaxy group (E + Sa + Sb) in the constellation Piscis Austrinus, 102 million light-years away. It shines at magnitude 12.0 and spans 1.1′ × 54″ of sky, about 32,600 light-years across. It is a telescope object, 6 inches or larger, and it is highest in the evening sky in October.

Galaxy: a system of billions of stars, gas and dust held together by gravity, far outside the Milky Way. Spiral galaxies have a disk with arms; elliptical galaxies are smooth, round or oval swarms of older stars.

HCG 90 is AM 2159-320 in the Arp-Madore catalog

Halton Arp and Barry Madore listed it in A Catalogue of Southern Peculiar Galaxies and Associations (1987), from their search of the UK Schmidt southern sky survey plates. The number 2159-320 is its position: right ascension 21h 59m and declination -32.0°.

Finding HCG 90 from Aldhanab

Aldhanab HCG 90 PISCIS AUSTRINUS

HCG 90 lies 5.6° north of Aldhanab, the magnitude 3.0 star. Three fingers held at arm's length cover about 5°.

HCG 90 is highest in the evening in October

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 60°N JAN at 60°N: -32° high at 9 pm FEB at 60°N: -47° high at 9 pm MAR at 60°N: -58° high at 9 pm APR at 60°N: -62° high at 9 pm MAY at 60°N: -53° high at 9 pm JUN at 60°N: -38° high at 9 pm JUL at 60°N: -24° high at 9 pm AUG at 60°N: -11° high at 9 pm SEP at 60°N: -4° high at 9 pm OCT at 60°N: -2° high at 9 pm NOV at 60°N: -7° high at 9 pm DEC at 60°N: -18° high at 9 pm 50°N JAN at 50°N: -29° high at 9 pm FEB at 50°N: -49° high at 9 pm MAR at 50°N: -65° high at 9 pm APR at 50°N: -71° high at 9 pm MAY at 50°N: -57° high at 9 pm JUN at 50°N: -38° high at 9 pm JUL at 50°N: -20° high at 9 pm AUG at 50°N: -4° high at 9 pm SEP at 50°N: 6° high at 9 pm OCT at 50°N: 8° high at 9 pm NOV at 50°N: 1° high at 9 pm DEC at 50°N: -12° high at 9 pm 40°N JAN at 40°N: -26° high at 9 pm FEB at 40°N: -49° high at 9 pm MAR at 40°N: -70° high at 9 pm APR at 40°N: -80° high at 9 pm MAY at 40°N: -59° high at 9 pm JUN at 40°N: -36° high at 9 pm JUL at 40°N: -15° high at 9 pm AUG at 40°N: 3° high at 9 pm SEP at 40°N: 15° high at 9 pm OCT at 40°N: 18° high at 9 pm NOV at 40°N: 10° high at 9 pm DEC at 40°N: -6° high at 9 pm 30°N JAN at 30°N: -22° high at 9 pm FEB at 30°N: -47° high at 9 pm MAR at 30°N: -70° high at 9 pm APR at 30°N: -83° high at 9 pm MAY at 30°N: -58° high at 9 pm JUN at 30°N: -33° high at 9 pm JUL at 30°N: -10° high at 9 pm AUG at 30°N: 11° high at 9 pm SEP at 30°N: 25° high at 9 pm OCT at 30°N: 28° high at 9 pm NOV at 30°N: 18° high at 9 pm DEC at 30°N: 0° high at 9 pm 20°N JAN at 20°N: -18° high at 9 pm FEB at 20°N: -44° high at 9 pm MAR at 20°N: -66° high at 9 pm APR at 20°N: -76° high at 9 pm MAY at 20°N: -55° high at 9 pm JUN at 20°N: -29° high at 9 pm JUL at 20°N: -4° high at 9 pm AUG at 20°N: 18° high at 9 pm SEP at 20°N: 34° high at 9 pm OCT at 20°N: 37° high at 9 pm NOV at 20°N: 26° high at 9 pm DEC at 20°N: 7° high at 9 pm 10°N JAN at 10°N: -13° high at 9 pm FEB at 10°N: -39° high at 9 pm MAR at 10°N: -60° high at 9 pm APR at 10°N: -67° high at 9 pm MAY at 10°N: -49° high at 9 pm JUN at 10°N: -24° high at 9 pm JUL at 10°N: 1° high at 9 pm AUG at 10°N: 25° high at 9 pm SEP at 10°N: 43° high at 9 pm OCT at 10°N: 47° high at 9 pm NOV at 10°N: 34° high at 9 pm DEC at 10°N: 13° high at 9 pm 0° JAN at 0°: -8° high at 9 pm FEB at 0°: -33° high at 9 pm MAR at 0°: -51° high at 9 pm APR at 0°: -57° high at 9 pm MAY at 0°: -42° high at 9 pm JUN at 0°: -19° high at 9 pm JUL at 0°: 6° high at 9 pm AUG at 0°: 31° high at 9 pm SEP at 0°: 52° high at 9 pm OCT at 0°: 57° high at 9 pm NOV at 0°: 41° high at 9 pm DEC at 0°: 18° high at 9 pm 10°S JAN at 10°S: -2° high at 9 pm FEB at 10°S: -26° high at 9 pm MAR at 10°S: -43° high at 9 pm APR at 10°S: -47° high at 9 pm MAY at 10°S: -35° high at 9 pm JUN at 10°S: -13° high at 9 pm JUL at 10°S: 12° high at 9 pm AUG at 10°S: 37° high at 9 pm SEP at 10°S: 60° high at 9 pm OCT at 10°S: 67° high at 9 pm NOV at 10°S: 48° high at 9 pm DEC at 10°S: 24° high at 9 pm 20°S JAN at 20°S: 3° high at 9 pm FEB at 20°S: -19° high at 9 pm MAR at 20°S: -34° high at 9 pm APR at 20°S: -37° high at 9 pm MAY at 20°S: -27° high at 9 pm JUN at 20°S: -7° high at 9 pm JUL at 20°S: 17° high at 9 pm AUG at 20°S: 42° high at 9 pm SEP at 20°S: 67° high at 9 pm OCT at 20°S: 76° high at 9 pm NOV at 20°S: 53° high at 9 pm DEC at 20°S: 28° high at 9 pm 30°S JAN at 30°S: 9° high at 9 pm FEB at 30°S: -12° high at 9 pm MAR at 30°S: -24° high at 9 pm APR at 30°S: -28° high at 9 pm MAY at 30°S: -19° high at 9 pm JUN at 30°S: -1° high at 9 pm JUL at 30°S: 21° high at 9 pm AUG at 30°S: 46° high at 9 pm SEP at 30°S: 72° high at 9 pm OCT at 30°S: 83° high at 9 pm NOV at 30°S: 57° high at 9 pm DEC at 30°S: 32° high at 9 pm 40°S JAN at 40°S: 14° high at 9 pm FEB at 40°S: -4° high at 9 pm MAR at 40°S: -15° high at 9 pm APR at 40°S: -18° high at 9 pm MAY at 40°S: -10° high at 9 pm JUN at 40°S: 5° high at 9 pm JUL at 40°S: 25° high at 9 pm AUG at 40°S: 48° high at 9 pm SEP at 40°S: 71° high at 9 pm OCT at 40°S: 80° high at 9 pm NOV at 40°S: 58° high at 9 pm DEC at 40°S: 36° high at 9 pm below horizon low 20-40° 40-60° overhead-ish

The chart gives its height above the horizon at 9 pm through the year, from 60°N to 40°S. It can be seen from the whole southern hemisphere and north to about 58°N, and never sets south of 58°S.

HCG 90 is 102 million light-years away

The light seen from HCG 90 tonight left it about 102 million years ago, long before modern humans existed. It ranks 216 of 422 by distance among the galaxies on Go Astronomy. Distance source: Cosmicflows-4 (Tully et al. 2023), SBF.

Objects within 6° of HCG 90

No other Messier, Caldwell or Herschel 400 object lies within 6°.

HCG 90 catalog data

FieldValue
DesignationsNGC 7176, PGC 67883, ESO 466-041, NGC 7172, PGC 67874, ESO 466-038, NGC 7173, PGC 67878, ESO 466-039, NGC 7174, PGC 67881, ESO 466-040, HCG 90, AM 2159-320, AM 2159-321 NED01, AM 2159-321 NED02
Typegalaxy group (E + Sa + Sb)
ConstellationPiscis Austrinus
Right ascension (J2000)22h 02.1m
Declination (J2000)-31° 59′
Magnitude12.0
Surface brightness12.7 mag/arcmin²
Apparent size1.1′ × 54″
True size32,600 light-years
Distance102 million light-years (Cosmicflows-4 (Tully et al. 2023), SBF)
Best monthOctober
Best withTelescope