14 Trianguli is a binary star located in the northern constellation Triangulum, with an apparent magnitude of 5.16 making it faintly visible to the naked eye under ideal conditions. The star is situated 433 light years[1] away but is approaching with a heliocentric radial velocity of −39.543 km/s.[7] It has a stellar classification of K5 III.[2][3][4][5] It has 1.926 times the mass of the Sun and 42.649 times the radius of the Sun.[2] It has an effective temperature of 3,957 K[10] and shines at 299.17 times the luminosity of the Sun from its photosphere.[8]

14 Trianguli

Location of 14 Trianguli (circled)
Observation data Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation	Triangulum
Right ascension	02h 32m 06.170s[1]
Declination	+36° 08′ 50.18″[1]
Apparent magnitude (V)	5.16[2]
Characteristics
Spectral type	K5 III[2][3][4][5]
U−B color index	+1.78[6]
B−V color index	+1.47[6]
Astrometry
Radial velocity (Rv)	−39.543±0.146[7] km/s
Proper motion (μ)	RA: 45.066[1] mas/yr Dec.: 11.901[1] mas/yr
Parallax (π)	7.5319 ± 0.1060 mas[1]
Distance	433 ± 6 ly (133 ± 2 pc)
Orbit[6]
Period (P)	6,257±73 days
Eccentricity (e)	0.22±0.04
Semi-amplitude (K1) (primary)	2.27±0.09 km/s
Details
Mass	1.926±0.096[2] M☉
Radius	42.649±2.132[2] R☉
Luminosity	299.17[8] L☉
Surface gravity (log g)	1.76[9] cgs
Temperature	3,957[10] K
Metallicity [Fe/H]	−0.16[9] dex
Other designations
14 Trianguli, AG+35°233, BD+35°497, GC 3032, HD 15656, HIP 11784, HR 736, SAO 55635
Database references
SIMBAD	data

14 Trianguli is a single-lined spectroscopic binary with an orbital period of 17 years. The secondary star has not been detected visually or in the spectrum and is expected to be a low-mass red dwarf or white dwarf.[6]

References

Further reading

• Griffin, R.F. (August 1994). "Spectroscopic binary orbits from photoelectric radial velocities. Paper 117: 14 Trianguli". The Observatory. 114: 167–171. Bibcode:1994Obs...114..167G.