HD 38283

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Bubup
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Mensa
Right ascension 05h 37m 02.0168s[1]
Declination −73° 41′ 57.645″[1]
Apparent magnitude (V) 6.70[2]
Characteristics
Spectral type F9.5V[3]
B−V color index 0.540[4]
Astrometry
Proper motion (μ) RA: 138.785±0.040[1] mas/yr
Dec.: −108.526±0.048[1] mas/yr
Parallax (π)26.2443 ± 0.0250[1] mas
Distance124.3 ± 0.1 ly
(38.10 ± 0.04 pc)
Absolute magnitude (MV)3.82[4]
Details
Mass1.37[5] M☉
Radius1.49[5] R☉
Luminosity2.35[4] L☉
Surface gravity (log g)4.23[5] cgs
Temperature5,981[5] K
Metallicity [Fe/H]−0.18[5] dex
Rotational velocity (v sin i)3.8[6] km/s
Age7.43[6] Gyr
Other designations
CD−73°253, HIP 26380, SAO 256213, 2MASS J05370199-7341574[7]
Database references
SIMBADdata

Bubup, or HD 38283, is a 7th magnitude F-type main sequence star located 124 light-years away[1] in the constellation of Mensa. Bubup is not visible to the naked eye for most people but can be easily seen using binoculars.

A survey in 2015 has ruled out the existence of any stellar companions at projected distances above 11 astronomical units.[8]

Name[]

The star was given the name "Bubup", the Boonwurrung word for "child", by the IAU, chosen by representatives of Australia for the 2019 NameExoWorlds contest.[9]

Planetary system[]

On April 11, 2011, a Saturnian planet, Yanyan (HD 38283 b), was discovered in an Earth-like 363-day orbit.[4] Yanyan itself turns out to be unable to host habitable exomoons, both because of its significant eccentricity (for the single eccentric planet solution), and because of the overluminosity of its host star compared to the Sun.[4]

The HD 38283 planetary system[10]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b ≥0.289±0.034 MJ 1.020±0.002 361.0±1.1 0.474±0.136 — —

See also[]

  • List of extrasolar planets detected by radial velocity

References[]

  1. ^ a b c d e f 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.
  2. ^ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
  3. ^ Gray, R. O.; et al. (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): 161–170. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637. S2CID 119476992.
  4. ^ a b c d e Tinney, C. G.; et al. (April 2011). "The Anglo-Australian Planet Search. XXI. A Gas-giant Planet in a One Year Orbit and the Habitability of Gas-giant Satellites". The Astrophysical Journal. 732 (1). 31. Bibcode:2011ApJ...732...31T. doi:10.1088/0004-637x/732/1/31.
  5. ^ a b c d e Stassun, Keivan G.; Collins, Karen A.; Gaudi, B. Scott (2017). "Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes". The Astronomical Journal. 153 (3): 136. arXiv:1609.04389. Bibcode:2017AJ....153..136S. doi:10.3847/1538-3881/aa5df3. S2CID 119219062.
  6. ^ a b Delgado Mena, E.; et al. (April 2015). "Li abundances in F stars: planets, rotation, and Galactic evolution". Astronomy & Astrophysics. 576: 24. arXiv:1412.4618. Bibcode:2015A&A...576A..69D. doi:10.1051/0004-6361/201425433. S2CID 56051637. A69.
  7. ^ "HD 38283". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-08-22.
  8. ^ Mugrauer, M.; Ginski, C. (12 May 2015). "High-contrast imaging search for stellar and substellar companions of exoplanet host stars". Monthly Notices of the Royal Astronomical Society. 450 (3): 3127–3136. doi:10.1093/mnras/stv771.
  9. ^ "Approved names (§ Australia)". Name Exo Worlds. IAU. Retrieved 19 December 2019.
  10. ^ Wittenmyer, Robert A.; et al. (2020). "Cool Jupiters greatly outnumber their toasty siblings: occurrence rates from the Anglo-Australian Planet Search". Monthly Notices of the Royal Astronomical Society. 492 (1): 377–383. arXiv:1912.01821. Bibcode:2020MNRAS.492..377W. doi:10.1093/mnras/stz3436. S2CID 208617606.

Coordinates: Sky map 05h 37m 02s, −73° 41′ 58″

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