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51 Eridani information


51 Eridani

51 Eridani and its planet 51 Eridani b
Observation data
Epoch J2000      Equinox J2000
Constellation Eridanus
Right ascension 04h 37m 36.13234s[1]
Declination −02° 28′ 24.7749″[1]
Apparent magnitude (V) 5.22[2]
Characteristics
Spectral type F0 V[2]
Variable type γ Dor[3]
Astrometry
Radial velocity (Rv)12.60±0.3[4] km/s
Proper motion (μ) RA: 44.22 ± 0.34[1] mas/yr
Dec.: –64.39 ± 0.27[1] mas/yr
Parallax (π)33.98 ± 0.34 mas[1]
Distance96.0 ± 1.0 ly
(29.4 ± 0.3 pc)
Absolute magnitude (MV)2.87[5]
Details[6]
51 Eri A
Mass1.75±0.05[2] M
Radius1.45±0.02 R
Luminosity6.7[7] L
Surface gravity (log g)3.95±0.04 cgs
Temperature7,331±30 K
Metallicity [Fe/H]−0.12±0.06 dex
Rotational velocity (v sin i)77.9[8] km/s
Other designations
c Eridani, 51 Eridani, BD−02° 963, HD 29391, HIP 21547, HR 1474, SAO 131358, 2MASS J04373613-0228248
Database references
SIMBADdata

51 Eridani is a star in the constellation Eridanus. It has an apparent magnitude of 5.22,[2] meaning it is just visible to the unaided eye in suburban and rural skies.[9] The primary star's absolute magnitude is 2.87.[5] There is also a binary star named GJ 3305 which shares the same proper motion through space with it,[10] making it overall a triple star system.

  1. ^ a b c d e Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c d Simon, M.; Schaefer, G. H. (2011). "MEASURED DIAMETERS OF TWO F STARS IN THE β PIC MOVING GROUP". The Astrophysical Journal. 743 (2): 158. arXiv:1109.3483. Bibcode:2011ApJ...743..158S. doi:10.1088/0004-637X/743/2/158. S2CID 16107676.
  3. ^ Cite error: The named reference Sepulveda_et_al_2022 was invoked but never defined (see the help page).
  4. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
  5. ^ a b Mamajek, Eric E.; Bell, Cameron P. M. (2014). "On the age of the β Pictoris moving group". Monthly Notices of the Royal Astronomical Society. 445 (3): 2169–80. arXiv:1409.2737. Bibcode:2014MNRAS.445.2169M. doi:10.1093/mnras/stu1894.
  6. ^ Cite error: The named reference Rajan2017 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference McCarthy2012 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Paunzen2014 was invoked but never defined (see the help page).
  9. ^ Bortle, John E. (February 2001). "The Bortle Dark-Sky Scale". Sky & Telescope. Sky Publishing Corporation. Retrieved 14 October 2021.
  10. ^ Cite error: The named reference Montet was invoked but never defined (see the help page).

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51 Eridani

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51 Eridani is a star in the constellation Eridanus. It has an apparent magnitude of 5.22, meaning it is just visible to the unaided eye in suburban and...

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51 Eridani b

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51 Eridani b is a "Jupiter-like" planet that orbits the young F0 V star 51 Eridani, in the constellation Eridanus. It is 96 light years away from the solar...

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Epsilon Eridani

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Omicron1 Eridani

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consisting of ο1 Eridani, 39 Eridani, Xi Eridani, Nu Eridani, 56 Eridani and 55 Eridani. Consequently, the Chinese name for Omicron1 Eridani itself is 九州殊口二...

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Gamma Eridani

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of γ Eridani, δ Eridani, π Eridani, ε Eridani, ζ Eridani, η Eridani, π Ceti, τ1 Eridani, τ2 Eridani, τ3 Eridani, τ4 Eridani, τ5 Eridani, τ6 Eridani, τ7...

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Upsilon2 Eridani

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Upsilon2 Eridani (υ² Eridani, abbreviated Upsilon2 Eri, υ2 Eri), officially named Theemin /ˈθiːmən/, is a star in the constellation of Eridanus. It is...

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Delta Eridani

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of δ Eridani, γ Eridani, π Eridani, ε Eridani, ζ Eridani, η Eridani, π Ceti, τ1 Eridani, τ2 Eridani, τ3 Eridani, τ4 Eridani, τ5 Eridani, τ6 Eridani, τ7...

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Tau4 Eridani

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Tau4 Eridani (τ4 Eridani, τ4 Eri) is a binary star system in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude...

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Tau9 Eridani

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Tau9 Eridani (τ9 Eri) is a binary star in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude of 4.63. The distance...

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Epsilon Eridani b

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Epsilon Eridani b, also known as AEgir [sic], is an exoplanet approximately 10.5 light-years away orbiting the star Epsilon Eridani, in the constellation...

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Theta Eridani

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Theta Eridani, Latinized from θ Eridani, is a binary system in the constellation of Eridanus with a combined apparent magnitude of 2.88. Its two components...

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Tau7 Eridani

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Tau7 Eridani is a solitary star in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude of 5.235. Using the parallax...

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Mu Eridani

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Mu EridaniEridani) is a binary star system in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude of 4.00...

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List of stars in Eridanus

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40m 39.93s −39° 51′ 19.1″ 4.11 0.86 145 K0III HD 24160 g 138 24160 17874 03h 49m 27.28s −36° 12′ 00.4″ 4.17 0.13 210 G8III = υ6 Eridani τ6 Eri τ6 27 128...

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List of directly imaged exoplanets

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Macintoshi; et al. (2015). "Discovery and spectroscopy of the young Jovian planet 51 Eri b with the Gemini Planet Imager". Science. 350 (6256): 64–7. arXiv:1508...

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Xi Eridani

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ξ Eridani (Latinised as Xi Eridani) is a solitary star in the constellation Eridanus. With an apparent visual magnitude of 5.17, it is faintly visible...

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Nu Eridani

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Nu Eridani (ν Eri) is a star in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude of 3.93. The distance to...

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Zeta Eridani

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Zeta EridaniEridani, abbreviated Zeta Eri, ζ Eri) is a binary star in the constellation of Eridanus. With an apparent visual magnitude of 4.80, it...

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Rho1 Eridani

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Rho1 Eridani (Rho1 Eri, ρ1 Eri), is a star located in the constellation Eridanus. It forms an asterism with the stars Rho2 and Rho3 Eridani, south of Cetus...

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Tau2 Eridani

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Tau2 Eridani, Gamma Eridani, Pi Eridani, Delta Eridani, Epsilon Eridani, Zeta Eridani, Eta Eridani, Pi Ceti, Tau1 Eridani, Tau3 Eridani, Tau4 Eridani, Tau5...

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Lambda Eridani

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Lambda Eridani (λ Eri) is a star in the constellation Eridanus. It is visible to the naked eye on a dark night with an apparent visual magnitude of 4...

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Rho2 Eridani

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Rho2 Eridani is a star located in the constellation Eridanus. It forms an asterism with Rho1 and Rho3 Eridani, south of Cetus, in the upper north east...

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Tau8 Eridani

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Tau8 Eridani, Latinized from τ8 Eridani, is a binary star system in the constellation Eridanus. It is visible to the naked eye with a combined apparent...

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Upsilon3 Eridani

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Upsilon3 Eridani, Chi Eridani, Phi Eridani, Kappa Eridani, HD 16754, HD 23319, Theta Eridani, HD 24072, HD 24160, Upsilon4 Eridani, Upsilon2 Eridani and Upsilon1...

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Upsilon4 Eridani

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Upsilon4 Eridani is a close binary star system in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude of 3.56...

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Gemini Observatory

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Planet Imager (GPI) image of a planet orbiting a distant star known as 51 Eridani. The bright central star has been mostly removed by a hardware and software...

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Upsilon1 Eridani

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Upsilon1 Eridani (υ1 Eri) is a single star in the constellation Eridanus. It has an apparent visual magnitude is 4.51, which is bright enough to be faintly...

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Psi Eridani

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Psi Eridani, Latinized from ψ Eridani, is a star in the constellation Eridanus. With an apparent visual magnitude is 4.81, it can be seen with the naked...

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Pi Eridani

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Pi Eridani, Latinized from π Eridani, is a star in the constellation Eridanus. It has an apparent visual magnitude of 4.40, which is bright enough to...

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Omega Eridani

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Omega Eridani (ω Eri) is a binary star system in the constellation Eridanus. It is visible to the naked eye with an apparent visual magnitude is 4.37...

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