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LP 816-60
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  LP 816-60 Location of LP 816-60 in the constellation Capricornus | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Capricornus[1] |
| Right ascension | 20h 52m 33.01660s[2] |
| Declination | −16° 58′ 29.0033″[2] |
| Apparent magnitude (V) | 11.458[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4] |
| Spectral type | M4V[5] |
| Astrometry | |
| Radial velocity (Rv) | 8.5[6] km/s |
| Proper motion (μ) | RA: -309.115 mas/yr[2] Dec.: 37.051 mas/yr[2] |
| Parallax (π) | 177.9312±0.0365 mas[2] |
| Distance | 18.330 ± 0.004 ly (5.620 ± 0.001 pc) |
| Absolute magnitude (MV) | +12.63[1] |
| Details[7] | |
| Mass | 0.224±0.022 M☉ |
| Radius | 0.266±0.012 R☉ |
| Surface gravity (log g) | 4.584[8] cgs |
| Temperature | 3030±27[4] K |
| Metallicity [Fe/H] | -0.11±0.07[4] dex |
| Rotation | 67.6±0.1 d.[9] |
| Rotational velocity (v sin i) | 2.70±0.66[8] km/s |
| Age | 2.57+8.15 −1.95 Gyr |
| Other designations | |
| HIP 103039[10], LP 816-60, NLTT 50038[11], TYC 6348-400-1[12], 2MASS J20523304-1658289 | |
| Database references | |
| SIMBAD | data |
LP 816-60 is a single[13] red dwarf star of spectral type M4, located in constellation Capricornus at 18.33 light-years from Earth.[2]
The discovery name of this star is LP 816-60,[14] which indicates that its discovery was published between 1963 and 1981 in University of Minnesota, Minneapolis.[15] LP 816-60 is known at least from 1979, when it was included to Luyten's catalogue NLTT.[11]
No massive planets were detected around LP 816-60 as of 2013.[13] The star has a magnetic starspot cycle of 10.6±1.7 years,[9] and weak magnetic fields in chromosphere averaging 4.4 G.[16]
References
[edit]- ^ 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 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.
- ^ Koen, C.; Kilkenny, D.; van Wyk, F.; Marang, F. (2010). "UBV(RI)C JHK observations of Hipparcos-selected nearby stars". Monthly Notices of the Royal Astronomical Society. 403 (4): 1949–1968. Bibcode:2010MNRAS.403.1949K. doi:10.1111/j.1365-2966.2009.16182.x.
- ^ Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc-The Southern Sample". The Astronomical Journal. 132 (1): 161. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637.
- ^ Henry, Todd J.; Jao, Wei-Chun; Winters, Jennifer G.; Dieterich, Sergio B.; Finch, Charlie T.; Ianna, Philip A.; Riedel, Adric R.; Silverstein, Michele L.; Subasavage, John P.; Vrijmoet, Eliot Halley (2018), "The Solar Neighborhood XLIV: RECONS Discoveries within 10 parsecs", The Astronomical Journal, 155 (6): 265, arXiv:1804.07377, Bibcode:2018AJ....155..265H, doi:10.3847/1538-3881/aac262, S2CID 53983430
- ^ Mann, Andrew W.; Feiden, Gregory A.; Gaidos, Eric; Boyajian, Tabetha; Braun, Kaspar von (2015), "How to Constrain Your M Dwarf: Measuring Effective Temperature, Bolometric Luminosity, Mass, and Radius", The Astrophysical Journal, 804 (1): 64, arXiv:1501.01635, Bibcode:2015ApJ...804...64M, doi:10.1088/0004-637X/804/1/64, S2CID 19269312
- ^ a b Hojjatpanah, S.; Figueira, P.; Santos, N. C.; Adibekyan, V.; Sousa, S. G.; Delgado-Mena, E.; Alibert, Y.; Cristiani, S.; González Hernández, J. I.; Lanza, A. F.; Di Marcantonio, P.; Martins, J. H. C.; Micela, G.; Molaro, P.; Neves, V.; Oshagh, M.; Pepe, F.; Poretti, E.; Rojas-Ayala, B.; Rebolo, R.; Suárez Mascareño, A.; Zapatero Osorio, M. R. (2019), "Catalog for the ESPRESSO blind radial velocity exoplanet survey", Astronomy & Astrophysics, 629: A80, arXiv:1908.04627, Bibcode:2019A&A...629A..80H, doi:10.1051/0004-6361/201834729, S2CID 199552090
- ^ a b Suárez Mascareño, A.; Rebolo, R.; González Hernández, J. I. (2016), "Magnetic cycles and rotation periods of late-type stars from photometric time series", Astronomy & Astrophysics, 595: A12, arXiv:1607.03049, Bibcode:2016A&A...595A..12S, doi:10.1051/0004-6361/201628586, S2CID 118555782
- ^ Perryman; et al. (1997). "HIP 103039". The Hipparcos and Tycho Catalogues. Retrieved 2014-11-29.
- ^ a b Luyten, Willem Jacob (1979). "NLTT 50038". NLTT Catalogue.
- ^ Perryman; et al. (1997). "HIP 103039". The Hipparcos and Tycho Catalogues. Retrieved 2014-11-29.
- ^ a b Montet, Benjamin T.; Crepp, Justin R.; Johnson, John Asher; Howard, Andrew W.; Marcy, Geoffrey W. (2013), "The Trends High-Contrast Imaging Survey. Iv. The Occurrence Rate of Giant Planets Around M Dwarfs", The Astrophysical Journal, 781: 28, arXiv:1307.5849, doi:10.1088/0004-637X/781/1/28, S2CID 26620552
- ^ Kirkpatrick, J. Davy; Gelino, Christopher R.; Cushing, Michael C.; Mace, Gregory N.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L.; Eisenhardt, Peter R.; McLean, Ian S.; Mainzer, Amy K.; Burgasser, Adam J.; Tinney, Chris G.; Parker, Stephen; Salter, Graeme (2012). "Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function". The Astrophysical Journal. 753 (2): 156. arXiv:1205.2122. Bibcode:2012ApJ...753..156K. doi:10.1088/0004-637X/753/2/156. S2CID 119279752.
- ^ Dictionary of Nomenclature of Celestial Objects. LP entry. SIMBAD. Centre de Données astronomiques de Strasbourg.
- ^ Moutou, C.; Hébrard, E. M.; Morin, J.; Malo, L.; Fouqué, P.; Torres-Rivas, A.; Martioli, E.; Delfosse, X.; Artigau, E.; Doyon, R. (2017), "SPIRou input catalogue: Activity, rotation and magnetic field of cool dwarfs", Monthly Notices of the Royal Astronomical Society, 472 (4): 4563–4586, arXiv:1709.01650, Bibcode:2017MNRAS.472.4563M, doi:10.1093/mnras/stx2306
