Astronomy:Bibha
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| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Sextans |
| Right ascension | 09h 56m 05.9185s[1] |
| Declination | −03° 48′ 30.3233″[1] |
| Apparent magnitude (V) | 8.74 |
| Characteristics | |
| Spectral type | F8V |
| Astrometry | |
| Proper motion (μ) | RA: −67.001±0.079[1] mas/yr Dec.: 15.999±0.076[1] mas/yr |
| Parallax (π) | 9.5928 ± 0.0509[1] mas |
| Distance | 340 ± 2 ly (104.2 ± 0.6 pc) |
| Details | |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 86081 or Bibha, named after Indian physicist Bibha Chowdhuri[3], is a yellow-white dwarf star in the constellation Sextans south of the celestial equator. It is bigger and more massive than our Sun at 1.22 and 1.21 solar units respectively. It has temperature of 6028 K and luminosity of 1.75 solar.
HD 86081 shows no evidence of planetary transits in spite of a 17.6% transit probability. [4] The star is chromospherically inactive, with no emission seen in the core of the Ca II H and K lines. [4]
The star began being monitored in November 2005 [4] and its first planet was discovered on April 17, 2006.[4]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥1.48±0.23 MJ | 0.0346±0.0027 | 2.1378431±0.0000031 | 0.0119±0.0047 | — | — |
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- ↑ "HD 86081". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+86081.
- ↑ "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results.
- ↑ 4.0 4.1 4.2 4.3 Johnson, John Asher et al. (2006). "The N2K Consortium. VI. Doppler Shifts without Templates and Three New Short-Period Planets". The Astrophysical Journal 647 (1): 600–611. doi:10.1086/505173. Bibcode: 2006ApJ...647..600J.
- ↑ Ment, Kristo et al. (2018). "Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810". The Astronomical Journal 156 (5): 213. doi:10.3847/1538-3881/aae1f5. Bibcode: 2018AJ....156..213M.
Coordinates: 
09h 56m 05.9183s, −03° 48′ 30.318″
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