In today's world, NGC 3561 has become a topic of interest to a wide variety of people in different fields. Whether for its relevance in history, its impact on modern society, or its future implications, NGC 3561 has captured the attention of individuals of all ages and occupations. This article seeks to explore and analyze different aspects related to NGC 3561, with the aim of providing a complete and enriching vision of this topic. From its origin to its current evolution, including its possible consequences, our goal is to offer a global and complete perspective that allows our readers to fully understand the importance of NGC 3561 in the world in which we live.
NGC 3561 | |
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![]() Hubble Space Telescope image of elliptical galaxy NGC 3561B (upper left) and spiral galaxy NGC 3561A (lower right), known collectively as Arp 105. | |
Observation data (J2000 epoch) | |
Constellation | Ursa Major |
Right ascension | 11h 11m 13.2s[1] |
Declination | +28° 41′ 47″[1] |
Redshift | 0.029367[2] |
Heliocentric radial velocity | 8804 km/s[2] |
Distance | 412.3 Mly (126.41 Mpc)[3] |
Group or cluster | Abell 1185 |
Apparent magnitude (V) | 14.5[2] |
Characteristics | |
Type | A: Sa[4] B: E5[5] |
Apparent size (V) | 1.36 x 0.69[2] |
Other designations | |
A: NGC 3561A, Arp 105 NED01, UGC 06224 NED01, MCG +05-27-011, PGC 33992, CGCG 155-090 NED01, VV 237c[4] B: IRAS 11085+2859, NGC 3561B, Arp 105 NED02, UGC 6224 NED02, MCG +05-27-010, PGC 33991, CGCG 155-090 NED02, VV 237a[5] |
NGC 3561, also known as Arp 105, is a pair of interacting galaxies NGC 3561A and NGC 3561B within the galaxy cluster Abell 1185 in Ursa Major. It was discovered by British astronomer John Herschel on 30 March 1827.[6] Its common name is "the Guitar" and contains a small tidal dwarf galaxy known as Ambartsumian's Knot that is believed to be the remnant of the extensive tidal tail pulled out of one of the galaxies.[7]
One supernova has been observed in NGC 3561A: SN 1953A (type unknown, mag. 16) was discovered by Halton Arp on 16 April 1953.[8][9]