Alpha Pavonis

Starbox begin
name=Alpha Pavonis Starbox image


caption=Peacock is the α star in the constellation of Pavo. Starbox observe
epoch=J2000
ra=20^h 25^m 38.9^s
dec=−56° 44′ 06″
appmag_v=1.94
constell=Pavo Starbox character
class=B2 IV
b-v=−0.20
u-b=−0.71
variable=? Starbox astrometry
radial_v=2
prop_mo_ra=7.71
prop_mo_dec=−86.15
parallax=17.8
p_error=0.7
absmag_v=−1.81 Starbox detail
mass=5–6
radius=4.4
luminosity=2,100 | temperature=18,700
metal=?
rotation=39 km/s
age=? Starbox catalog
names=HR 7790, CD -57°9674, HD 193924, SAO 246574, FK5 764, HIP 100751 Starbox reference
Simbad=HD+193924

Alpha Pavonis (α Pav) is a star in the constellation Pavo. It is also known by the name Peacock, but this is not a classical name. It was assigned to the star by Her Majesty's Nautical Almanac Office in the late 1930s during the creation of The Air Almanac, a navigational almanac for the Royal Air Force. Of the fifty-seven stars included in the new almanac, two had no classical names: epsilon Carinae and alpha Pavonis. The RAF insisted that all of the stars must have names, so new names were invented. Alpha Pavonis was named Peacock, for obvious reasons, whilst epsilon Carinae was called Avior. [Sadler, D.H.: "A Personal History of H.M. Nautical Almanac Office", page 46. Edited and privately published by Wilkins, G.A., 1993]

The star has been found to be a spectroscopic binary star.

Notes

External links

* [http://www.alcyone.de/SIT/bsc/bsc_search.html Bright Star Catalogue]
* [http://www.astro.uiuc.edu/~kaler/sow/peacock.html Peacock]