Astronomy:Gliese 536
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Short description: Star in the constellation Virgo
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Virgo[1] |
| Right ascension | 14h 01m 03.1882s[2] |
| Declination | −02° 39′ 15.520″[2] |
| Apparent magnitude (V) | +9.707[3] |
| Characteristics | |
| Evolutionary stage | main sequence[2] |
| Spectral type | M0V[4] |
| B−V color index | 1.47[3] |
| Astrometry | |
| Radial velocity (Rv) | −25.90±0.00[5] km/s |
| Proper motion (μ) | RA: −825.463[2] mas/yr Dec.: +598.433[2] mas/yr |
| Parallax (π) | 95.9575 ± 0.0253[2] mas |
| Distance | 33.990 ± 0.009 ly (10.421 ± 0.003 pc) |
| Absolute magnitude (MV) | +9.7[1] |
| Details[6] | |
| Mass | 0.528±0.027 M☉ |
| Radius | 0.529±0.022 R☉ |
| Luminosity | 0.04437±0.00092 L☉ |
| Habitable zone inner limit | 0.1756±0.0018 au |
| Habitable zone outer limit | 0.3716±0.0038 au |
| Surface gravity (log g) | 4.713±0.007 cgs |
| Temperature | 3,641±88 K |
| Metallicity [Fe/H] | −0.08±0.09 dex |
| Rotation | 43.9 days[7] |
| Rotational velocity (v sin i) | 2.0[7] km/s |
| Age | 4.2±1.1 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Gliese 536 is a red dwarf star in the constellation Virgo. It lies at a distance of approximately 34 light-years and has two known exoplanets.
Planetary system
The two known exoplanets orbiting 536 were found from Doppler spectroscopy.[6] Gliese 536 b was discovered in 2017,[9] while Gliese 536 c was discovered in 2025. Based on their minimum masses (m sin i) of 6.37±0.38 and 5.89±0.70 M🜨, both are thought to be either super-Earths or mini-Neptunes. The host star rotates at an angle of 58+16
−19° relative to Earth, and based on the assumption that the planets share this angle, their masses would be 7.6+2.3
−1.0 and 7.1+2.2
−1.2 M🜨. For an inclination less than 5°, both would be gas giants.[6]
The habitable zone spans from 0.176 to 0.372 astronomical units, so planet c is orbiting just below this zone. The equilibrium temperatures of Gliese 536 b and c are 451±15 and 291±10 K.[6]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥6.37±0.38 M⊕ | 0.0668±0.0012 | 8.70874±0.00056 | 0 | — | — |
| c | ≥5.89±0.70 M⊕ | 0.1617±0.0028 | 32.761±0.015 | 0 | — | — |
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 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.
- ↑ 3.0 3.1 Koen, C.; Kilkenny, D.; van Wyk, F.; Marang, F. (2010-04-21). "UBV(RI)CJHK observations of Hipparcos-selected nearby stars". Monthly Notices of the Royal Astronomical Society 403 (4): 1949–1968. doi:10.1111/j.1365-2966.2009.16182.x. ISSN 0035-8711.
- ↑ Stephenson, C. B. (July 1986). "Dwarf K and M stars of high proper motion found in a hemispheric survey." (in en). The Astronomical Journal 92: 139–165. doi:10.1086/114146. ISSN 0004-6256. Bibcode: 1986AJ.....92..139S.
- ↑ Fouqué, Pascal; Moutou, Claire; Malo, Lison; Martioli, Eder; Lim, Olivia; Rajpurohit, Arvind; Artigau, Etienne; Delfosse, Xavier et al. (2018-04-01). "SPIRou Input Catalogue: global properties of 440 M dwarfs observed with ESPaDOnS at CFHT". Monthly Notices of the Royal Astronomical Society 475 (2): 1960–1986. doi:10.1093/mnras/stx3246. ISSN 0035-8711.
- ↑ 6.0 6.1 6.2 6.3 6.4 Mascareño, A. Suárez; Burgo, C. del; Delisle, J.-B.; Hernández, J. I. González; Hara, N. C.; Mestre, J. M.; Nari, N.; Rebolo, R. et al. (2025-09-03). "A second low-mass planet orbiting the nearby M-dwarf GJ 536". Astronomy & Astrophysics. doi:10.1051/0004-6361/202555731.
- ↑ 7.0 7.1 Fuhrmeister, B.; Czesla, S.; Schmitt, J. H. M. M.; Schneider, P. C.; Caballero, J. A.; Jeffers, S. V.; Nagel, E.; Montes, D. et al. (2023). "The CARMENES search for exoplanets around M dwarfs. Behaviour of the Paschen lines during flares and quiescence". Astronomy and Astrophysics 678. doi:10.1051/0004-6361/202347161. Bibcode: 2023A&A...678A...1F.
- ↑ "GJ 536". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=GJ+536.
- ↑ Suárez Mascareño, A.; González Hernández, J. I.; Rebolo, R.; Astudillo-Defru, N.; Bonfils, X.; Bouchy, F.; Delfosse, X.; Forveille, T. et al. (2017). "A super-Earth orbiting the nearby M dwarf GJ 536". Astronomy and Astrophysics 597: A108. doi:10.1051/0004-6361/201629291. Bibcode: 2017A&A...597A.108S.
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