Horologium I dwarf galaxy

Database links to Horologium I dwarf galaxy

Galaxy Horologium-I dwarf galaxy
Horology 1
AladinLite
Constellation	Pendulum clock
Position equinox :  J2000.0 , epoch : J2000.0
Right ascension	02 h 55 m 31.7 s
declination	-54 ° 07 ′ 07.7 ″
Appearance
Morphological type	dSph
Brightness  (visual)	(16.1 ± 0.1) mag
Physical data
Affiliation	Local group
distance	258,000 ly / 79,000 pc
Absolute brightness	(−3.4 ± 0.1) mag
history
discovery	Dark Energy Survey
Discovery date	2015
Catalog names
Hor I dSph

The Horologium I dwarf galaxy , also Horologium I or Horologium 1 for short , is a dwarf galaxy of the type dSph discovered in 2015 in the constellation Pendulum Clock in the Local Group and one of the satellite galaxies of the Milky Way .

The distance to Earth is approximately 258,000 light years .

properties

Hor I dSph has a half-light radius of ′ , which corresponds to a size of ( )  pc at a distance of about 79 kpc . ${\displaystyle r_{h}=1,31_{-0,14}^{+0,19}}$  ${\displaystyle 30_{-3,3}^{+4,4}}$

additional

• List of galaxies in the local group

Web links

Commons : Constellation Pendulum Clock  - Collection of images, videos and audio files

• EIGHT BEASTS OF THE SOUTHERN WILD: DISCOVERY OF NINE ULTRA FAINT SATELLITES IN THE VICINITY OF THE MAGELLANIC CLOUDS at: iop.org

Individual evidence

1. ↑ Sergey E. Koposov, Vasily Belokurov, Gabriel Torrealba, N. Wyn Evans: Beasts of the Southern Wild. Discovery of a large number of Ultra Faint satellites in the vicinity of the Magellanic Clouds . In: The Astrophysical Journal . 805, March 10, 2015, p. 130. doi : 10.1088 / 0004-637X / 805/2/130 .
2. ↑ DES Collaboration: Eight New Milky Way Companions Discovered in First-Year Dark Energy Survey Data . In: The Astrophysical Journal . 807, March 10, 2015, p. 50. doi : 10.1088 / 0004-637X / 807/1/50 .