GJ 3512
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Ursa Major |
| Right ascension | 08h 412m 201289s[1] |
| Declination | +59° 29′ 50.445″[1] |
| Apparent magnitude (V) | +15.05[2] |
| Characteristics | |
| Evolutionary stage | Red dwarf |
| Spectral type | M5.70[3] |
| Astrometry | |
| Radial velocity (Rv) | 8[4] km/s |
| Proper motion (μ) | RA: −260.421[1] mas/yr Dec.: −1279.613[1] mas/yr |
| Parallax (π) | 105.3856 ± 0.0944 mas[1] |
| Distance | 30.95 ± 0.03 ly (9.489 ± 0.008 pc) |
| Details | |
| Mass | 0.117[5] M☉ |
| Radius | 0.166[5] R☉ |
| Luminosity | 0.00083[6] L☉ |
| Temperature | 2,844[6] K |
| Metallicity [Fe/H] | +0.02[3] dex |
| Rotational velocity (v sin i) | 2.0[7] km/s |
| Other designations | |
2MASS J08412013+5929505, G 234-45 | |
| Database references | |
| SIMBAD | data |
GJ 3512 is a red dwarf star 31 light years from the Sun that is orbited by a gas giant. GJ 3512 has a mass of roughly 0.12 solar masses and its companion GJ 3512b has a minimum mass of 0.46 Jupiter masses. The star's mass is only 250 times that of the gas giant, calling into question traditional models of planetary formation.[8][9]
See also
References
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ . Bibcode:1996AJ....112.2300W.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ a b . Bibcode:2015ApJ...802L..10T.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ . Bibcode:2014AJ....147...20N.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ a b . Bibcode:2016ApJ...821...93N.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ a b . Bibcode:2015ApJ...800...85N.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ . Bibcode:2018A&A...612A..49R.
{{cite journal}}: Cite journal requires|journal=(help); Missing or empty|title=(help) - ^ Choi, Charles Q. "Surprise! Giant Planet Found Circling Tiny Red Dwarf Star". Space.com. Retrieved 26 September 2019.
- ^ Morales, J. C.; Mustill, A. J.; Ribas, I.; Davies, M. B.; Reiners, A.; Bauer, F. F.; Kossakowski, D.; Herrero, E.; Rodríguez, E.; López-González, M. J.; Rodríguez-López, C.; Béjar, V. J. S.; González-Cuesta, L.; Luque, R.; Pallé, E.; Perger, M.; Baroch, D.; Johansen, A.; Klahr, H.; Mordasini, C.; Anglada-Escudé, G.; Caballero, J. A.; Cortés-Contreras, M.; Dreizler, S.; Lafarga, M.; Nagel, E.; Passegger, V. M.; Reffert, S.; Rosich, A.; Schweitzer, A. (2019). "A giant exoplanet orbiting a very-low-mass star challenges planet formation models". Science. 365 (6460): 1441–1445. arXiv:1909.12174. doi:10.1126/science.aax3198.
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