Gliese 422 b - Misplaced Pages

Mini Neptune orbiting Gliese 422

Gliese 422 b
Discovery
Discovered by	M. Tuomi et al.
Discovery date	3 March 2014
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	0.111 AU (16,600,000 km)
Eccentricity	0.11±0.04
Orbital period (sidereal)	20.129±0.005 d
Semi-amplitude	4.49
Star	Gliese 422 (Innes' star)

Gliese 422 b is an exoplanet orbiting the red dwarf Gliese 422 (Innes' star). Gliese 422 b was discovered in 2014, and the discovery was confirmed in 2020. It has a minimum mass of about ten times that of Earth.

It is located on the inner edge of circumstellar habitable zone (HZ) of Gliese 422, which extends from 0.11 to 0.21 AU. Gliese 422 b's semi-major axis is 0.119 AU and its orbital period is 26.161 Earth days.

References

^ Tuomi, Mikko; Jones, Hugh R. A; Barnes, John R; Anglada-Escudé, Guillem; Jenkins, James S (2014). "Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics". Monthly Notices of the Royal Astronomical Society. 441 (2): 1545. arXiv:1403.0430. Bibcode:2014MNRAS.441.1545T. doi:10.1093/mnras/stu358.
^ Feng, Fabo; Butler, R. Paul; Shectman, Stephen A.; Crane, Jeffrey D.; Vogt, Steve; Chambers, John; Jones, Hugh R. A.; Wang, Sharon Xuesong; Teske, Johanna K.; Burt, Jenn; Díaz, Matías R.; Thompson, Ian B. (2020). "Search for Nearby Earth Analogs. II. Detection of Five New Planets, Eight Planet Candidates, and Confirmation of Three Planets around Nine Nearby M Dwarfs". The Astrophysical Journal Supplement Series. 246 (1): 11. arXiv:2001.02577. Bibcode:2020ApJS..246...11F. doi:10.3847/1538-4365/ab5e7c.

External links

"Planet GJ 422 b". Extrasolar Planets Encyclopaedia. 25 May 2014.

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Constellation of Carina

Stars

Bayer	α (Canopus) β (Miaplacidus) ε (Avior) η θ ι (Aspidiske) υ χ ω
Variable	R S T (not variable) U Y RT AG BO CK EV GG HR IX OY PP (p) QZ V337 (q) V341 V343 (d) V344 (f) V345 (E) V357 (a) V371 (z) V372 V376 (b) V382 (x) V399 (P) V415 (A) V448 (O) V518 V520 (w) V528 V533 (y) V560 V602 V640 V742 V752 V759 V816 V817 V906
HR	2435 (N) 2934 (Q) 3159 (D) 3220 (B) 3260 (C) 3414 (e) 3415 (e) 3571 (c) 3598 (b) 3643 (G) 3663 (i) 3696 (g) 3728 (k) 3821 (H) 3825 (h) 3856 (m) 3884 (l) 4025 (M) 4089 (L) 4102 (I) 4114 (s) 4138 (K) 4142 4159 (r) 4164 (t) 4177 (t) 4205 4222 4257 (u) 4325 (z)
HD	53143 63765 (Tapecue) 65216 85628 92206 93129 93250 93403 95086 97950
Other	AWI0005x3s CPD−57°2874 DEN 0817−6155 1E 1048-59 Innes' star LHS 288 NGC 3603-A1 NGC 3603-B NGC 3603-C OGLE-TR-182 OGLE-TR-211 OGLE2-TR-L9 Sher 25 WR 20a WR 21a WR 22 WR 24 WR 25 WR 30a WR 31a WR 42e

Exoplanets	OGLE-TR-111b OGLE-TR-132b OGLE-TR-113b OGLE-TR-182b OGLE-TR-211b OGLE2-TR-L9b HD 63765 b (Yvaga) HD 65216 b HD 65216 c HD 85628 Ab HD 95086 b (Levantes) Gliese 422 b

Star
clusters

NGC	2516 2808 3114 3293 3324 3532 3603
Other	Carina OB1 Carina OB2 Collinder 228 IC 2602 IC 2714 Platais 8 Trumpler 14 Trumpler 15 Trumpler 16 Westerlund 2

Nebulae

NGC	2867 3199 3576 3579 3581 3582 3584 3586
Other	Carina Nebula Finger of God Globule G290.1-0.8 Hen 2-47 Homunculus Nebula IC 2220 IC 2448 IGR J11014−6103 RCW 49

Galaxies

NGC	3059
Other	Carina Dwarf Spheroidal Galaxy

Galaxy clusters	Bullet Cluster

Astronomical events	GRB 000131 GRB 080916C