HR 753

Starbox begin
name=HR 753 A/B/C Starbox image


caption = Gliese 105 A and C Starbox observe
epoch=J2000
ra=A: 02^h 36^m 4.9^s
B: 02^h 36^m 15.0^s
C: 02^h 35^m 58.8^s
dec=A: +06° 53′ 12.7″
B: +06° 52′ 18″
C: +06° 52′ 00″
appmag_v=5.82/11.66/16.9
constell=Cetus Starbox character
class=K3 V/M3.5 Vn/M7 V
b-v=0.97/1.60
u-b=0.81/1.12
variable=None/BY Draconis Starbox astrometry
radial_v=25.7
prop_mo_ra=1,806.18
prop_mo_dec=1,442.40
parallax=136.98
p_error=0.88
absmag_v=6.49/12.34/17.58 Starbox detail
mass=0.81/0.21/0.08
radius=0.79/0.28
luminosity=0.21/0.0001/0.0000075
temperature=4400
metal=?
rotation=?
age= 4.8-6.6 Gigayears (Sun=4.6) Starbox catalog
names=BX Ceti (B "only"), Gl 105, HR 753, BD +06°398, HD 16160, LHS 15/16, LTT 10858/10859, GCTP 520.00, SAO 110636, FK5 1073, G 73-70/71, G 76-11/12, LFT 217/218, HIP 12114. Starbox reference
Simbad=Gliese+105

HR 753 (Harvard Revised 753) is a triple star system in the constellation of Cetus. It is located relatively near the Sun at an estimated distance of less than 24 light years, but even the brightest component is too faint to see directly with the unaided eye. No planets have yet been detected around any of the stars in this system.

The companion star B has a common proper motion with A, and the two have an estimated separation of 1,200 AUs. It is a BY Draconis variable star that has been given the designation "BX Ceti".

The third companion C lies much closer to A, at a distance of approximately 24 AU. The pair A-C have an estimated orbital period of 61 years. Component C is a relatively minuscule star that lies at the low end of the mass range needed to achieve nuclear fusion.

External links

* [http://www.solstation.com/stars/gl105abc.htm Gliese 105 / HR 753 ABC] SolStation entry.
* [http://hubblesite.org/newscenter/newsdesk/archive/releases/1995/33/ Hubble Spies a Really Cool Star]
* http://jumk.de/astronomie/special-stars/gliese-105.shtml