Gliese 48
| Observation data Epoch J2000.0 Equinox ICRS | |
|---|---|
| Constellation | Cassiopeia[1] |
| Right ascension | 01h 02m 32.23543s[2] |
| Declination | +71° 40′ 47.3363″[2] |
| Apparent magnitude (V) | 10.2[3] |
| Characteristics | |
| Evolutionary stage | Red dwarf |
| Spectral type | M3.5V[3] |
| Astrometry | |
| Radial velocity (Rv) | +1.34±0.15[2] km/s |
| Proper motion (μ) | RA: +1,746.701 mas/yr[2] Dec.: −381.762 mas/yr[2] |
| Parallax (π) | 121.4598±0.0158 mas[2] |
| Distance | 26.853 ± 0.003 ly (8.233 ± 0.001 pc) |
| Details[4] | |
| Mass | 0.470±0.010[3] M☉ |
| Radius | 0.463±0.010[3] R☉ |
| Luminosity | −1.56+0.04 −0.04[3] L☉ |
| Temperature | 3450±50[3] K |
| Other designations | |
| GJ 48, LHS 1146, Ross 318, TIC 379084450, 2MASS J01051108+6138451[5] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
Gliese 48 (also known as Ross 318) is a red dwarf star located in the constellation Cassiopeia. Visually, it is located between 31 Cassiopeiae and 23 Cassiopeiae. Due to its apparent magnitude, it is not visible to the naked eye.
Physical characteristics
[edit]Gliese 48 is a red dwarf of spectral type M3.5V. Much dimmer than the Sun, its luminosity is approximately 2.7% of the solar luminosity. It has a mass of approximately 0.47 solar masses and a radius of approximately 0.46 solar radii. Its effective temperature is estimated at 3450 K. The star shows metallic content consistent with solar levels and may exhibit flare activity.
Planetary system
[edit]The star hosts the planet Gliese 48 b, a super-Earth discovered through a combined analysis of radial velocity data (CARMENES and HIRES) and TESS photometry.[3][4] The planet orbits the star in approximately 39.6 days and lies within the optimistic habitable zone of the system.
References
[edit]- ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
- 1 2 3 4 5 6 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.
- 1 2 3 4 5 6 7 Conzo, G.; Moriconi, M.; CorrêaJr., S. A. (2026). "DETECTION AND CHARACTERIZATION OF THE TEMPERATE SUPER-EARTH GLIESE 48 B" (PDF). Open European Journal on Variable stars (273): 1–18. doi:10.5817/OEJV2026-0273.
- 1 2 "Gliese 48 Overview". NASA Exoplanet Archive. Retrieved 6 August 2026.
- ↑ "Ross 318". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 July 2026.
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