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.
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.