Messier 110

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Galaxy
Messier 110
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SDSS image
SDSS image
AladinLite
Constellation Andromeda
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 00 h 40 m 22.1 s
declination + 41 ° 41 ′ 07 ″
Appearance
Morphological type E5 pec  
Brightness  (visual) 7.9 likes
Brightness  (B-band) 8.9 likes
Angular expansion 19.5 ′ × 11.5 ′
Position angle 170 °
Surface brightness 13.8 mag / arcmin²
Physical data
Affiliation Local group , LGG 011  
Redshift −0.000804 ± 0.000010  
Radial velocity −241 ± 3 km / s  
distance 2.2  x  10 6 ly /
674  x  10 3 pc
Dimensions 3.6 · 10 9 to 15 · 10 9 M ☉
diameter 15,000 ly
history
discovery Charles Messier
Caroline Herschel
Discovery date August 10, 1773
August 27, 1783
Catalog names
M  110 • NGC  205 • UGC  426 • PGC  2429 • CGCG  535-014 • MCG  + 07-02-014 • IRAS  00376 + 4124 • GC  105 • H  V 18 • h  44 • LDCE 0031 NED005

Messier 110 (also known as NGC 205 ) is an elliptical galaxy with dimensions 19.5 '× 11.5' and an apparent magnitude of +7.9 mag in the constellation Andromeda . It is a companion of Messier 31 , the Andromeda nebula, and thus like it 2.2 million light years away. Messier 110 is now classified as a dwarf spherical galaxy. Their mass is estimated at 3.6 to 15 billion solar masses . It has a halo with eight globular clusters .

High-resolution image of the center of Messier 110, taken with the Hubble space telescope

Besides Messier 32 , Messier 110 is the second brighter companion galaxy of the Andromeda Nebula and thus a member of the Local Group .

discovery

Messier 110 was discovered by Charles Messier on August 10, 1773 , described in a publication in 1798 and pictured in 1807 on a drawing of the "Great Andromeda Nebula". For unknown reasons, however, he never added this item to his catalog. The "official" inclusion in the Messier catalog took place in 1966 by the science historian K. Glyn Jones.

Caroline Herschel discovered Messier 110 independently of Charles Messier on August 27, 1783 - he then received the number HV 18 from William Herschel .

Web links

Commons : Messier 110  - collection of images, videos and audio files

Individual evidence

  1. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e SEDS : NGC 205
  3. ↑ Seligman