Lupus-TR-3
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Lupus[1] |
| Right ascension | 15h 30m 18.66718s[2] |
| Declination | −42° 58′ 41.6640″[2] |
| Apparent magnitude (V) | 17.4[3] |
| Characteristics | |
| Spectral type | K1 V[4] |
| Apparent magnitude (B) | 18.68±0.43[5] |
| Apparent magnitude (J) | 15.80±0.09[6] |
| Apparent magnitude (H) | 15.39±0.13[6] |
| Apparent magnitude (K) | 15.48±0.25[6] |
| B−V color index | +1.28[3][5] |
| Astrometry | |
| Proper motion (μ) | RA: −3.798 mas/yr[2] Dec.: −7.197 mas/yr[2] |
| Distance | ~2,000[3] pc |
| Details | |
| Mass | 0.87±0.04[3] M☉ |
| Radius | 0.82±0.05[3] R☉ |
| Luminosity | 0.38[7] L☉ |
| Surface gravity (log g) | 4.5±0.5[3] cgs |
| Temperature | 5,000±150[3] K |
| Other designations | |
| GSC2 S233113121866, USNO-B1.0 0470-00456338, DENIS-P J153018.6-425841, 2MASS J15301866-4258415[8] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
Lupus-TR-3 is a star located in the southern constellation Lupus. It has an apparent magnitude of 17.4,[3] making it visible only in powerful telescopes. Its distance is not well known, but it is estimated to be roughly 2,000 parsecs away from the Solar System.[3]
Physical characteristics
Lupus-TR-3 has a stellar classification of K1 V,[4] indicating that it is an ordinary K-type main-sequence star. It has 87% the mass of the Sun and 82% the radius of the Sun. It radiates at an effective temperature of 5,000 K.[3]
Planetary system
Lupus-TR-3 b is an exoplanet discovered in 2007 by personnel from the Center for Astrophysics | Harvard & Smithsonian using the transit method. It has four-fifths the mass of Jupiter, nine-tenths the radius, and has density of 1.4 g/cm3. This planet is a typical "hot Jupiter" as it orbits at 0.0464 AU distance from the star, taking 3.9 days to orbit. It is currently the faintest ground-based detection of a transiting planet.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination (°) |
Radius |
|---|---|---|---|---|---|---|
| b | 0.81±0.18 MJ | 0.0464 ± 0.0007 | 3.91405±0.00004 | 0.00 | 88.3+1.3 −0.8 |
0.89±0.07 RJ |
See also
References
- ↑ 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 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 8 9 10 11 12 Weldrake, David T. F.; Bayliss, Daniel D. R.; Sackett, Penny D.; Tingley, Brandon W.; Gillon, Michaël; Setiawan, Johny (30 January 2008). "Lupus-TR-3b: A Low-Mass Transiting Hot Jupiter in the Galactic Plane?". The Astrophysical Journal. 675 (1): L37–L40. arXiv:0711.1746. Bibcode:2008ApJ...675L..37W. doi:10.1086/529519. eISSN 1538-4357. ISSN 0004-637X. S2CID 13285272.
- 1 2 Ehrenreich, D.; Désert, J.-M. (20 April 2011). "Mass-loss rates for transiting exoplanets". Astronomy & Astrophysics. 529: A136. arXiv:1103.0011. Bibcode:2011A&A...529A.136E. doi:10.1051/0004-6361/201016356. eISSN 1432-0746. ISSN 0004-6361. S2CID 119302960.
- 1 2 "VizieR Online Data Catalog: The Guide Star Catalog, Version 2.2 (GSC2.2) (STScI, 2001)". VizieR Online Data Catalog. Space Telescope Science Institute. 1 October 2001. Bibcode:2001yCat.1271....0S.
- 1 2 3 Cutri, R. M.; Skrutskie, M. F.; van Dyk, S.; Beichman, C. A.; Carpenter, J. M.; Chester, T.; Cambresy, L.; Evans, T.; Fowler, J.; Gizis, J.; Howard, E.; Huchra, J.; Jarrett, T.; Kopan, E. L.; Kirkpatrick, J. D.; Light, R. M.; Marsh, K. A.; McCallon, H.; Schneider, S.; Stiening, R.; Sykes, M.; Weinberg, M.; Wheaton, W. A.; Wheelock, S.; Zacarias, N. (June 2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". VizieR Online Data Catalog: II/246. Bibcode:2003yCat.2246....0C.
- ↑ Loyd, R. O. Parke; Shkolnik, Evgenya L.; Schneider, Adam C.; Richey-Yowell, Tyler; Barman, Travis S.; Peacock, Sarah; Pagano, Isabella (2020). "Current Population Statistics do Not Favor Photoevaporation over Core-powered Mass Loss as the Dominant Cause of the Exoplanet Radius Gap". The Astrophysical Journal. 890 (1): 23. arXiv:1912.12305. Bibcode:2020ApJ...890...23L. doi:10.3847/1538-4357/ab6605.
- ↑ "Lupus-TR 3". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved May 20, 2009.
External links
- "Lupus-TR-3". Exoplanets. Archived from the original on 2016-03-03. Retrieved 2009-05-20.
- Bayliss; Weldrake, David T. F.; Sackett, Penny D.; Tingley, Brandon W.; Lewis, Karen M.; et al. (2009). "The Lupus Transit Survey for Hot Jupiters: Results and Lessons". The Astronomical Journal. 137 (5): 4368–4376. arXiv:0903.5121. Bibcode:2009AJ....137.4368B. doi:10.1088/0004-6256/137/5/4368. S2CID 16189693.
