10 Trianguli

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10 Trianguli
Triangulum IAU.svg
Red circle.svg
Location of 10 Trianguli (circled)
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
1 H. Trianguli Minus, [16] 10 Tri, AG+28° 262, BD+27°360, GC  2781, HD  14252, HIP  10793, HR  675, SAO  75276
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.

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<span class="mw-page-title-main">HD 31134</span> Star in the constellation of Camelopardalis

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<span class="mw-page-title-main">HD 101917</span> High proper motion star

HD 101917, also designated as HR 4509, or rarely 34 G. Chamaeleontis, is a solitary star located in the southern circumpolar constellation Chamaeleon. It has an apparent magnitude of 6.38, placing it near the limit for naked eye visibility. The object is located relatively close at a distance of 185 light years based on Gaia DR3 parallax measurements but is receding with a heliocentric radial velocity of 33 km/s. At its current distance, HD 101917's brightness is diminished by 0.28 magnitudes due to interstellar dust. It has an absolute magnitude of +2.69.

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<span class="mw-page-title-main">HD 169853</span> Am star; Corona Australis

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<span class="mw-page-title-main">HD 170384</span> A-type dwarf; Corona Australis

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<span class="mw-page-title-main">HD 176425</span> A-type dwarf; Corona Australis

HD 176425, also known as HR 7177 or rarely 38 G. Coronae Australis, is a solitary, bluish-white hued star located in the southern constellation Corona Australis. It has an apparent magnitude of 6.21, placing it near the limit for naked eye visibility, even under ideal conditions. Gaia DR3 parallax measurements imply a distance of 358 light-years, and it is currently drifting closer with a heliocentric radial velocity of −12.8 km/s. At its current distance, HD 176425's brightness is diminished by an interstellar extinction factor of 0.27 magnitudes and it has an absolute magnitude of +0.75.

References

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  20. ↑ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211 . Bibcode:2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940 . S2CID   244398875. Gaia DR3 record for this source at VizieR.
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