Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Triangulum |
Right ascension | 02h 18m 56.99355s[1] |
Declination | +28° 38′ 33.6322″[1] |
Apparent magnitude (V) | 5.29±0.01[2] |
Characteristics | |
Evolutionary stage | main sequence star[3] |
Spectral type | A2 V[4][5] |
U−B color index | +0.02[6] |
B−V color index | +0.04[6] |
Astrometry | |
Radial velocity (Rv) | 0.4±0.1[7] km/s |
Proper motion (μ) | RA: +7.073 mas/yr[1] Dec.: +0.836 mas/yr[1] |
Parallax (π) | 8.9971 ± 0.0729 mas[1] |
Distance | 363 ± 3 ly (111.1 ± 0.9 pc) |
Absolute magnitude (MV) | −0.02[8] |
Details | |
Mass | 2.83±0.05[3] M☉ |
Radius | 3.71±0.19[9] R☉ |
Luminosity | 108+10 −9[3] L☉ |
Surface gravity (log g) | 3.73[10] cgs |
Temperature | 9,023[11] K |
Metallicity [Fe/H] | +0.33[12] dex |
Rotational velocity (v sin i) | 22±2[13] km/s |
Age | 372±44[14][15] Myr |
Other designations | |
Database references | |
SIMBAD | data |
10 Trianguli (HD 14252; HR 675; 1 H. Trianguli Minus), or simply 10 Tri is a solitary star[17] located in the northern constellation Triangulum. It is faintly visible to the naked eye as a white-hued point of light with an apparent magnitude of 5.29.[2] Gaia DR3 parallax measurements imply a distance of 363 light-years [1] and it is slowly receding with a heliocentric radial velocity of 0.4 km/s.[7] At its current distance, 10 Tri's brightness is diminished by an interstellar extinction of 0.11 magnitudes[18] and it has an absolute magnitude of −0.02.[8]
10 Trianguli has a stellar classification of A2 V,[4][5] indicating that it is an ordinary A-type main-sequence star that is generating energy via hydrogen fusion at its core. It has 2.83 times the mass of the Sun[3] and a slightly enlarged radius 3.71 times that of the Sun.[9] It radiates 108 times the luminosity of the Sun[3] from its photosphere at an effective temperature of 9,023 K.[11] 10 Trianguli is rather evolved for its class, having completed 92.5% of its main sequence lifetime[3] at the age of 372 million years.[14][15] It is metal enriched with an iron abundance of [Fe/H] = +0.33 or % of the Sun's[12] and unlike most hot stars, it spins modestly with a projected rotational velocity of 22 km/s.[13]
10 Trianguli has a 13th magnitude companion located 58.3" away along a position angle of 205°.[19] It is an unrelated background star that is much more distant than 10 Trianguli.[20] Together with ι Trianguli and 12 Trianguli, it forms part of the obsolete Triangulum Minus.
EDR3
was invoked but never defined (see the help page).Tycho2000
was invoked but never defined (see the help page).Zorec2012
was invoked but never defined (see the help page).Osawa1959
was invoked but never defined (see the help page).Cowley1969
was invoked but never defined (see the help page).Osawa1960
was invoked but never defined (see the help page).Gontcharov2006
was invoked but never defined (see the help page).Anderson2012
was invoked but never defined (see the help page).Kervella2004
was invoked but never defined (see the help page).Phillip1980
was invoked but never defined (see the help page).Takeda2019
was invoked but never defined (see the help page).Gerban2016
was invoked but never defined (see the help page).Royer2002
was invoked but never defined (see the help page).Gontcharov2012A
was invoked but never defined (see the help page).Gontcharov2012B
was invoked but never defined (see the help page).Verbunt2010
was invoked but never defined (see the help page).Eggleton2008
was invoked but never defined (see the help page).Gontcharov2017
was invoked but never defined (see the help page).Mason2001
was invoked but never defined (see the help page).EDR3B
was invoked but never defined (see the help page).