astro.wikisort.org - Star

Search / Calendar

HD 17092 is a star in the constellation of Perseus. It has an orange hue but is visible only with binoculars or better equipment, having an apparent visual magnitude of 7.73.[2] The distance to this star is approximately 750 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +5.5 km/s.[5]

HD 17092
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Perseus
Right ascension 02h 46m 22.1179s[1]
Declination +49° 39′ 11.0949″[1]
Apparent magnitude (V) 7.73[2]
Characteristics
Evolutionary stage Giant[2]
Spectral type K0III[3]
B−V color index 1.247±0.014[4]
Astrometry
Radial velocity (Rv)5.49±0.03[5] km/s
Proper motion (μ) RA: 40.328±0.100[1] mas/yr
Dec.: −10.312±0.099[1] mas/yr
Parallax (π)4.3499 ± 0.0516 mas[1]
Distance750 ± 9 ly
(230 ± 3 pc)
Absolute magnitude (MV)+1.76[4]
Details[6]
Mass1.23±0.18 M☉
Radius12.04+0.51
−0.35[1] R☉
Luminosity57±1[1] L☉
Surface gravity (log g)2.47±0.11 cgs
Temperature4,630±30 K
Metallicity [Fe/H]0.11±0.05 dex
Rotation505 days[4]
Rotational velocity (v sin i)<1 km/s
Age5.82±2.75 Gyr
Other designations
BD+49° 767, HD 17092, SAO 38313, PPM 45466
Database references
SIMBADdata

This object is an aging giant star with a stellar classification of K0III,[3] which means it has exhausted the supply of hydrogen at its core then cooled and expanded off the main sequence.[4] It is roughly six billion years old with 1.2[6] times the mass of the Sun and has expanded to 12 times the Sun's radius.[1] The star is radiating 57[1] times the luminosity of the Sun from its enlarged photosphere at an effective temperature of 4,630 K.[6]


Planetary system


On 6 May 2007, a planet HD 17092 b was discovered with the Hobby-Eberly Telescope by Niedzielski who used the wobble method. This planet is a massive gas giant and orbits at 1.29 astronomical units from the star with a period of about 360 days.[4]

The HD 17092 planetary system[4]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b ≥4.6±0.3 MJ 1.29±0.05 359.9±2.4 0.166±0.052 — —

References


  1. 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. Maldonado, J.; et al. (April 2019), "Connecting substellar and stellar formation: the role of the host star's metallicity", Astronomy & Astrophysics, 624: 7, arXiv:1903.01141, Bibcode:2019A&A...624A..94M, doi:10.1051/0004-6361/201833827, S2CID 118934484, A94
  3. Skiff, B. A. (October 2014), General Catalogue of Stellar Spectral Classifications, Bibcode:2014yCat....1.2023S
  4. Niedzielski, A.; et al. (2007). "A Planetary‐Mass Companion to the K0 Giant HD 17092". The Astrophysical Journal. 669 (2): 1354–1358. arXiv:0705.0935. Bibcode:2007ApJ...669.1354N. doi:10.1086/521784. S2CID 14853462.
  5. Deka-Szymankiewicz, B.; et al. (2018), "The Penn State - Toruń Centre for Astronomy Planet Search stars. IV. Dwarfs and the complete sample", Astronomy and Astrophysics, 615: A31, arXiv:1801.02899, Bibcode:2018A&A...615A..31D, doi:10.1051/0004-6361/201731696, S2CID 85526201
  6. Maldonado, J.; Villaver, E. (April 2016), "Evolved stars and the origin of abundance trends in planet hosts", Astronomy & Astrophysics, 588: 11, arXiv:1602.00835, Bibcode:2016A&A...588A..98M, doi:10.1051/0004-6361/201527883, S2CID 119212009, A98


На других языках

[de] HD 17092

HD 17092 ist ein 355 Lichtjahre von der Erde entfernter K-Riese im Sternbild Perseus. Er ist mit einer scheinbaren Helligkeit von 7,7 mag mit dem bloßen Auge auch unter optimalen Beobachtungsbedingungen nicht mehr zu sehen. Im Jahre 2007 entdeckten Niedzielski et al. mit Hilfe der Radialgeschwindigkeitsmethode einen planetaren Begleiter mit einer Umlaufperiode von rund 360 Tagen, der die systematische Bezeichnung HD 17092 b trägt. Die große Halbachse seines Orbits misst 1,3 Astronomische Einheiten und seine Mindestmasse beträgt ca. 4,6 Jupitermassen.
- [en] HD 17092

[ru] HD 17092

HD 17092 — звезда в созвездии Персея на расстоянии около 355 световых лет от нас. Вокруг звезды обращается, как минимум, одна планета.


Текст в блоке "Читать" взят с сайта "Википедия" и доступен по лицензии Creative Commons Attribution-ShareAlike; в отдельных случаях могут действовать дополнительные условия.

Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.

2019-2025
WikiSort.org - проект по пересортировке и дополнению контента Википедии