30 Arietis Bb: Difference between revisions

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	\| inclination =4.14+0.96−0.90° .<ref name="Kiefer2020">{{citation\|title=Determining the true mass of radial-velocity exoplanets with Gaia 9 planet candidates in the brown-dwarf/stellar regime and 27 confirmed planets\|year=2020\|arxiv=2009.14164}}</ref>		\| inclination =4.14+0.96−0.90°<ref name="Kiefer2020">{{citation\|title=Determining the true mass of radial-velocity exoplanets with Gaia 9 planet candidates in the brown-dwarf/stellar regime and 27 confirmed planets\|year=2020\|arxiv=2009.14164}}</ref>
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Revision as of 19:11, 29 December 2020

Red dwarf

30 Arietis Bb
Discovery
Discovered by	Guenther et al.
Discovery site	Karl Schwarzschild Observatory
Discovery date	November 27, 2009
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	0.995 ± 0.012 AU (148,800,000 ± 1,800,000 km)
Eccentricity	0.289 ± 0.092
Orbital period (sidereal)	335.1 ± 2.5 d 0.917 ± 0.007 y
Inclination	4.14+0.96−0.90°

30 Arietis Bb (sometimes abbreviated 30 Ari Bb) is a red dwarf which orbits the F-type main sequence star 30 Arietis Ba, located in a quintuple star system approximately 146 light years away in the constellation Aries. The red dwarf was discovered by on Friday, November 27, 2009 by using precise radial velocity method from echelle spectrograph installed in the Alfred-Jensch telescope in Karl Schwarzschild Observatory.

Overview

The red dwarf 30 Arietis Bb had a minimum mass of nearly 10 times that of Jupiter. In 2020, after the inclination of the planetary orbit was measured to be just 4.14
_−0.90°, the "planet" was found to fall in the mass range of the red dwarf star.

References

^ Determining the true mass of radial-velocity exoplanets with Gaia 9 planet candidates in the brown-dwarf/stellar regime and 27 confirmed planets, 2020, arXiv:2009.14164 Cite error: The named reference "Kiefer2020" was defined multiple times with different content (see the help page).
Guenther, E. W.; et al. (2009). "A substellar component orbiting the F-star 30 Arietis B". Astronomy and Astrophysics. 507 (3): 1659–1665. arXiv:0912.4619. Bibcode:2009A&A...507.1659G. doi:10.1051/0004-6361/200912112.
Jean Schneider (2011). "Notes for Planet 30 Ari B b". Extrasolar Planets Encyclopaedia. Retrieved 3 October 2011.

Constellation of Aries

Stars

Bayer	α (Hamal) β (Sheratan) γ (Mesarthim) δ (Botein) ε ζ η θ ι κ λ μ ν ξ ο π ρ ρ ρ σ τ τ
Flamsteed	1 4 7 10 11 14 15 16 19 20 21 23 26 27 29 30 31 33 35 36 38 39 (Lilii Borea) 40 41 (Bharani) 47 49 50 51 52 53 54 55 56 59 60 62 64 65 66 54 Cet 85 Cet
Variable	TZ UX VZ (16 Tri)
HR	577 728 803 952 999
HD	12661 20367
Other	BD+20°307 HIP 14810 HAT-P-25 Teegarden's Star WASP-11/HAT-P-10 WD 0145+234

Exoplanets	α Arietis b HD 12661 b c HIP 14810 b c d Teegarden's Star b c WASP-11b/HAT-P-10b

Galaxies

NGC	677 680 691 694 695 716 765 770 772 781 803 817 820 821 871 877 900 901 903 904 918 935 938 972 990 992 1024 1134 1156 1168
Other	1ES 0229+200 3C 79 4C +28.07 AO 0235+164 IC 167 IC 1801 PSO J0309+27 Segue 2 UGC 2140

Galaxy clusters	MS 0302+17

Astronomical events	GRB 060218