HD 290327

In this article, we will explore the topic of HD 290327 in depth, addressing its multiple facets, impact and relevance in today's society. From its origin to its evolution over time, we will delve into the exhaustive analysis of HD 290327, unraveling historical, cultural, social and economic aspects that have contributed to shaping its meaning and scope today. Through research, studies and opinions of experts in the field, we will seek to shed light on the most pertinent questions related to HD 290327, in order to offer a comprehensive vision that enriches knowledge and understanding of this topic of unquestionable relevance.

HD 290327
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Orion
Right ascension 05h 23m 21.5637s[1]
Declination –02° 16′ 39.433″[1]
Apparent magnitude (V) 8.99[2]
Characteristics
Spectral type G5IV[3] or G8V[4]
Apparent magnitude (B) 9.751[2]
Apparent magnitude (J) 7.683±0.026[2]
Apparent magnitude (H) 7.404±0.047[2]
Apparent magnitude (K) 7.271±0.027[2]
B−V color index 0.761±0.033[2]
Astrometry
Radial velocity (Rv)+29.52±0.17[1] km/s
Proper motion (μ) RA: 32.478(19) mas/yr[1]
Dec.: −97.255(13) mas/yr[1]
Parallax (π)17.9008±0.0196 mas[1]
Distance182.2 ± 0.2 ly
(55.86 ± 0.06 pc)
Absolute magnitude (MV)5.24[2]
Details[5]
Mass0.86±0.01 M☉
Radius0.95±0.02 R☉
Luminosity0.747±0.004 L☉
Surface gravity (log g)4.41±0.01 cgs
Temperature5,525±20 K
Metallicity −0.11 dex
Rotational velocity (v sin i)1.44±1.0[4] km/s
Age11.8±1.2 Gyr
Other designations
BD−02°128, HD 290327, HIP 25191, SAO 132049, PPM 175811[6]
Database references
SIMBADdata
Exoplanet Archivedata

HD 290327 is a single[7] star in the equatorial constellation of Orion. It has a yellow hue with an apparent visual magnitude of 8.99,[2] which is too faint to be viewed with the naked eye. Parallax measurements provide a distance estimate of 182 light years from the Sun. It is drifting away with a radial velocity of +29.5 km/s,[1] having come to within 124 light-years around a million years ago.[2]

Kazanasmas (1973) found a stellar classification of G5IV[3] for this object, matching a G-type star that is evolving along the subgiant branch. It was later given a class of G8V,[4] suggesting it is instead a G-type main-sequence star. This object is nearly twelve[5] billion years old and is spinning slowly with a projected rotational velocity of 1.4 km/s.[4] The star has 86% of the mass of the Sun and 95% of the Sun's radius. It is radiating 75% of the luminosity of the Sun from its photosphere at an effective temperature of 5,525 K. The metallicity is sub-solar,[5] meaning it has a lower abundance of elements other than hydrogen and helium compared to the Sun.

In 2009, a gas giant planet was found in orbit around the star. It is orbiting at a distance of around 3.4 AU with a period of 6.7 years.[4]

The HD 290327 planetary system[4]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b ≥ 2.54+0.17
−0.14 MJ 		3.43+0.20
−0.12 		2443+205
−117 		0.08+0.08
−0.03 		— —

See also

References

  1. ^ a b c d e f 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.
  2. ^ a b c d e f g h i 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. S2CID 119257644.
  3. ^ a b Kazanasmas, M. S. (1973). "Catalogue of magnitudes, color indices, spectral and luminosity classes of stars in Orion". Abastumanskaya Astrofiz. Obs., Byull. 44: 175. Bibcode:1973AbaOB..44..175K.
  4. ^ a b c d e f Naef, Dominique; Mayor, Michel; Lo Curto, Gaspare; Bouchy, François; Lovis, Christophe; Moutou, Claire; Benz, Willy; Pepe, Francesco; Queloz, Didier; Santos, Nuno C.; Ségransan, Damien; Udry, Stéphane; Bonfils, Xavier; Delfosse, Xavier; Forveille, Thierry; Hébrard, Guillaume; Mordasini, Christoph; Perrier, Christian; Boisse, Isabelle; Sosnowska, Danuta (2010). "The HARPS Search for Southern Extrasolar Planets XXIII. 8 Planetary Companions to Low-activity Solar-type Stars". Astronomy and Astrophysics. 523: A15. arXiv:1008.4600. Bibcode:2010A&A...523A..15N. doi:10.1051/0004-6361/200913616. S2CID 118845989.
  5. ^ a b c Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951. S2CID 54555839.
  6. ^ "HD 290327". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-11-18.
  7. ^ Ginski, C.; et al. (2016). "A lucky imaging multiplicity study of exoplanet host stars – II". Monthly Notices of the Royal Astronomical Society. 457 (2): 2173–2191. arXiv:1601.01524. Bibcode:2016MNRAS.457.2173G. doi:10.1093/mnras/stw049.