HD 106515
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 12h 15m 06.567s[1] |
| Declination | –07° 15′ 26.35″[1] |
| Apparent magnitude (V) | +7.35[2] |
| Characteristics | |
| Spectral type | G5[2] |
| Astrometry | |
| Radial velocity (Rv) | 21.6 ± 2[3] km/s |
| Proper motion (μ) | RA: –249.67 ± 0.91[1] mas/yr Dec.: –52.29 ± 0.74[1] mas/yr |
| Parallax (π) | 28.42 ± 0.96 mas[1] |
| Distance | 115 ± 4 ly (35 ± 1 pc) |
| Absolute magnitude (MV) | 4.62[2] |
| Details[2] | |
| Mass | 0.97 ± 0.01 M☉ |
| Radius | 1.62 ± 0.05 R☉ |
| Luminosity | 1.23 L☉ |
| Surface gravity (log g) | 4.41 ± 0.04 cgs |
| Temperature | 5362 ± 29 K |
| Metallicity [Fe/H] | +0.03 ± 0.02 dex |
| Age | 11.7 ± 0.2 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 106515 is a binary star (and currently visual triple system) in the constellation of Virgo.
The A and B stars are both G-type main-sequence stars. They have separate entries in the Luyten Two-Tenths catalogue (LTT), a catalog of high-proper-motion stars. The primary (the A star) is LTT 4599 (in the starbox) and the B star is LTT 4598 (G8 dwarf, mass 0.89). The two are gravitationally bound and separated at 310 AU. The binary semimajor axis is 390 AU.[2]
The third star in the visual triple, BD-06° 3533, is likely not bound with LTT 4599 and LTT 4598.[2]
Planetary system
From 1998 to 2012, the system was under observation from the CORALIE spectrograph at the La Silla Observatory.
In 2012, a long-period, wide-orbiting planet was deduced at LTT 4599 / HD 106515 A by radial velocity. This was published in November. The planet has been pulled to an eccentric orbit by the B star LTT 4598.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >9.61±0.14 MJ | 4.590±0.010 | 3630±12 | 0.572±0.011 | — | — |
References
- ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
- ^ a b c d e f Marmier, M.; Ségransan, D.; Udry, S.; Mayor, M.; Pepe, F.; Queloz, D.; Lovis, C.; Naef, D.; Santos, N. C.; Alonso, R.; Alves, S.; Berthet, S.; Chazelas, B.; Demory, B.-O.; Dumusque, X.; Eggenberger, A.; Figueira, P.; Gillon, M.; Hagelberg, J.; Lendl, M.; Mardling, R. A.; Mégevand, D.; Neveu, M.; Sahlmann, J.; Sosnowska, D.; Tewes, M.; Triaud, A. H. M. J. (2013). "The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets". Astronomy and Astrophysics. 551. A90. arXiv:1211.6444. Bibcode:2013A&A...551A..90M. doi:10.1051/0004-6361/201219639.
{{cite journal}}: Unknown parameter|displayauthors=ignored (|display-authors=suggested) (help) - ^ Wilson, Ralph Elmer (1953). "General catalogue of stellar radial velocities". Bibcode:1953GCRV..C......0W.
{{cite journal}}: Cite journal requires|journal=(help) - ^ "hd_106515_b". Extrasolar Planets Encyclopaedia.[permanent dead link]
 | This main-sequence-star-related article is a stub. You can help Wikipedia by expanding it. |
 | This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it. |