Astronomy:q Herculis
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Short description: Star in the Hercules constellation
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Hercules[1] |
| Right ascension | 16h 11m 28.74s[2] |
| Declination | +16° 39′ 56.5″[2] |
| Apparent magnitude (V) | 6.08[3] |
| Characteristics | |
| Evolutionary stage | main sequence[2][4] |
| Spectral type | A0V[5] |
| U−B color index | 0.00[5] |
| B−V color index | 0.02[5] |
| Astrometry | |
| Proper motion (μ) | RA: +3,552[2] mas/yr Dec.: +4.875[2] mas/yr |
| Parallax (π) | 8.6995 ± 0.0353[2] mas |
| Distance | 375 ± 2 ly (114.9 ± 0.5 pc) |
| Absolute magnitude (MV) | +0.63[1] |
| Details | |
| Mass | 2.4[6] M☉ |
| Radius | 2.6[6] R☉ |
| Luminosity | 50[6] L☉ |
| Surface gravity (log g) | 4.00[6] cgs |
| Temperature | 9,567[6] K |
| Rotational velocity (v sin i) | 43[4] km/s |
| Age | 380[2] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
q Herculis (48 Serpentis) is a star in the constellation Hercules that is situated at a distance of approximately 439.95 light-years from the Sun. Its apparent magnitude is +6.08.
The largest star q Herculis is a white star of the spectral type A0V. It has a mass of approximately 2.4 M☉, a radius of approximately 2.6 R☉, and a luminosity of approximately 50 L☉. Its effective temperature is approximately 9,567 K.[6] The age of q Herculis is determined to be about 380 million years.[2]
Nomenclature
q Herculis is this double star's Bayer designation. It was once considered to be in the constellation of Serpens, where it got its Flamsteed designation 48 Serpentis.[8]
References
- ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355. Bibcode: 2000A&A...355L..27H.
- ↑ 4.0 4.1 Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics 537: A120. doi:10.1051/0004-6361/201117691. Bibcode: 2012A&A...537A.120Z.
- ↑ 5.0 5.1 5.2 "VizieR Detailed Page". http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=5050&-corr=PK=HR&-out.max=9999&HR=6035. Retrieved 2012-07-13.
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 Stassun, Keivan G. et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S.
- ↑ "q Herculis". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=q+Herculis.
- ↑ Wagman, M. (August 1987), "Flamsteed's Missing Stars", Journal for the History of Astronomy 18 (3): 209–223, doi:10.1177/002182868701800305, Bibcode: 1987JHA....18..209W.
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