HP 1, BH 229
Globular Cluster HP 1 (HP, BH 229, Dufay 1),
Discovered by Dufay, Berthier and Morignat in 1954.
- Distance from Sun:
- 26.7 kly
- Distance from Galactic Center:
- 1.6 kly
- Apparent Diameter:
- 8.2 arc min
- 11.59 mag vis
- Radial Velocity:
- +55.7 +/- 0.7 km/s
- Abs. Mag:
- -6.46 Mag vis
Independently rediscovered by van den Bergh and Hagen in 1975.
Globular Cluster HP 1 was discovered by
Dufay et.al. (1954), and sometimes referred
to as "HP" for the Haute-Provence Observatory where the discovery occurred
(e.g., Sawyer Hogg 1959). This designation was
mutated to HP 1 as more globular clusters were discovered at that observatory
in the 1960s by Terzan.
Until recenztly, it was thought that HP 1 is situated close to the Galactic
Center, but recent estimates have put it as far as about 20,000 light years
beyond, to a total distance of 46,000 light years from us.
- Jean Dufay, Pierre Berthier and Bernard Morignat,
Astronomie stellaire: un nouvel amas globulaire dans la region du centre de la
[Stellar astronomy: A new globular cluster in the region of the center of the
Publications de l'Observatoire de Haute-Provence, Vol. 3, No. 17, 3p
- Helen Sawyer Hogg, 1959.
Handbuch der Physik, Volume 53, p. 129-
Appendix B, Catalogue of Globular Clusters.
- Sidney van den Bergh and Gretchen L. Hagen, 1975.
Uniform survey of clusters in the Southern Milky Way.
Astronomical Journal, Vol. 80, No. 1, p. 11-16 (Jan 1975)
[MW Globulars] |