110 Virginis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Virgo |
| Right ascension | 15h 02m 54.03756s[1] |
| Declination | +02° 05′ 28.6957″[1] |
| Apparent magnitude (V) | 4.40[2] |
| Characteristics | |
| Spectral type | K0.5 IIIb Fe–0.5[3] |
| B−V color index | 1.04[2] |
| Astrometry | |
| Radial velocity (Rv) | −16.2±0.3[1] km/s |
| Proper motion (μ) | RA: −55.569 mas/yr[1] Dec.: +13.628 mas/yr[1] |
| Parallax (π) | 16.7474 ± 0.129 mas[1] |
| Distance | 195 ± 2 ly (59.7 ± 0.5 pc) |
| Details | |
| Mass | 1.67[2] M☉ |
| Radius | 13.78±0.14[4] R☉ |
| Luminosity | 80.4±1.8[4] L☉ |
| Surface gravity (log g) | 2.7[5] cgs |
| Temperature | 4,655±24[4] K |
| Metallicity [Fe/H] | −0.3[5] dex |
| Age | 4.52[2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
110 Virginis is a star in the zodiac constellation Virgo, located 195[1] light-years away from Earth. It is visible to the naked eye as an orange-hued star with an apparent visual magnitude of 4.40.[2] The star is moving closer to the Earth with a heliocentric radial velocity of −16 km/s.[1]
The stellar classification of 110 Virginis is K0.5 IIIb Fe–0.5,[3] indicating that this is an evolved giant star with a mild underabundance of iron in its spectrum. At the age of 4.5[2] billion years old, it belongs to a sub-category of giants called the red clump, which means it is on the horizontal branch and is generating energy through the helium fusion at its core.[7] Compared to the Sun, it has 167%[2] of the mass but has expanded to 14 times the size. The enlarged photosphere has an effective temperature of 4,655 K and is radiating 80 times the Sun's luminosity.[4]
References
[edit]- ^ a b c d e f g 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.
- ^ a b c d e f g Luck, R. Earle (2015), "Abundances in the Local Region. I. G and K Giants", Astronomical Journal, 150 (3), 88, arXiv:1507.01466, Bibcode:2015AJ....150...88L, doi:10.1088/0004-6256/150/3/88, S2CID 118505114.
- ^ a b Keenan, Philip C.; McNeil, Raymond C. (1989), "The Perkins catalog of revised MK types for the cooler stars", Astrophysical Journal Supplement Series, 71: 245, Bibcode:1989ApJS...71..245K, doi:10.1086/191373
- ^ a b c d Baines, Ellyn K.; Thomas Armstrong, J.; Clark, James H.; Gorney, Jim; Hutter, Donald J.; Jorgensen, Anders M.; Kyte, Casey; Mozurkewich, David; Nisley, Ishara; Sanborn, Jason; Schmitt, Henrique R.; Van Belle, Gerard T. (2021), "Angular Diameters and Fundamental Parameters of Forty-four Stars from the Navy Precision Optical Interferometer", The Astronomical Journal, 162 (5): 198, arXiv:2211.09030, Bibcode:2021AJ....162..198B, doi:10.3847/1538-3881/ac2431
- ^ a b Hekker, S.; Meléndez, J. (December 2007), "Precise radial velocities of giant stars. III. Spectroscopic stellar parameters", Astronomy & Astrophysics, 475 (3): 1003–1009, arXiv:0709.1145, Bibcode:2007A&A...475.1003H, doi:10.1051/0004-6361:20078233, S2CID 10436552.
- ^ "110 Vir". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-02-16.
- ^ Alves, David R. (August 2000), "K-Band Calibration of the Red Clump Luminosity", The Astrophysical Journal, 539 (2): 732–741, arXiv:astro-ph/0003329, Bibcode:2000ApJ...539..732A, doi:10.1086/309278, S2CID 16673121.
