q Herculis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Hercules[1] |
| Right ascension | 16h 11m 28.7s[2][3] |
| Declination | +16° 39′ 56″[2][3] |
| Apparent magnitude (V) | 6.08[2][3] |
| Characteristics | |
| Evolutionary stage | main sequence[4] |
| Spectral type | A0V[3] |
| U−B color index | 0[2][3] |
| B−V color index | 0.02[2][3] |
| Astrometry | |
| Parallax (π) | 8.6995±0.0353 mas[5] |
| Distance | 375 ± 2 ly (114.9 ± 0.5 pc) |
| Absolute magnitude (MV) | +0.63[1] |
| Other designations | |
| q Her, 48 Serpentis, BD+17 2982, SAO 101994, HD 145647, HR 6035[2] | |
| Database references | |
| SIMBAD | data |
q Herculis (48 Serpentis) is a double star in the constellation Hercules that is situated at a distance of approximately 439.95 light-years from the Sun. Its apparent magnitude is +6.081.[5] The age of q Herculis is determined to be about 719 million years.
The largest star q Herculis is a white star of the spectral type A0V,[5] or A0. It has a mass of approximately 2.999 M☉, a radius of approximately 2.592 R☉, and a luminosity of approximately 52.481 L☉. Its effective temperature is approximately 9882 K.[5]
Nomenclature
q Herculis is this double star's Bayer designation. It was once considered to be in the Serpens, where it got its Flamsteed designation 48 Serpentis.[6]
References
- ^ a b Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
- ^ a b c d e f "q Herculis". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-10-17.
- ^ a b c d e f "VizieR Detailed Page". Archived from the original on 2016-03-04. Retrieved 2012-07-13.
- ^ 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 "TheSkyLive – HR 6035". Retrieved 2025-10-17.
- ^ Wagman, M. (August 1987), "Flamsteed's Missing Stars", Journal for the History of Astronomy, 18 (3): 209–223, Bibcode:1987JHA....18..209W, doi:10.1177/002182868701800305, S2CID 118445625.