GJ 3293
Coordinates: 04h 28m 37.08s, −25° 10′ 25.6″
GJ 3293 (sometimes Gliese 3293) is a star in the
constellation of Eridanus, that is orbited by four
GJ 3293
planets, two of which (GJ 3293b & GJ 3293d) Observation data
are located within the star's habitable zone. It is Epoch J2000 Equinox J2000
located at the celestial coordinates: Right
Constellation Eridanus[1]
Ascension 04h 28m 35.71911s, Declination
−25° 10′ 09.2979″.[2] With an apparent visual Right ascension 04h 28m 35.71911s[2]
magnitude of 11.96,[5] this star is too faint to be Declination −25° 10′ 09.2979″[2]
seen with the naked eye. It can be viewed with a Apparent magnitude (V) 11.96[3]
telescope having an aperture of at least 4 in
(10 cm). The estimated distance to GJ 3293 is Characteristics
65.9 light-years (20.2 parsecs), based on its Spectral type M2.5[3]
stellar parallax.[2] GJ 3293 is significantly smaller Astrometry
and cooler than the Sun.[1]
Radial velocity (Rv) 13.116 ± 0.0024[4] km/s
Planetary system Proper motion (μ) RA: −81.375 mas/yr[2]
Dec.: −485.454 mas/yr[2]
In 2015, it was discovered that GJ 3293 Parallax (π) 49.4868 ± 0.0227 mas[2]
possessed two planets,[1] and in 2017 an Distance 65.91 ± 0.03 ly
additional two planets were discovered, making a
(20.207 ± 0.009 pc)
total of four.[6] Two of these planets are located
within the habitable zone: GJ 3293b and GJ Absolute magnitude (MV) 10.66[1]
3293d.[6] Details
Mass 0.420[1] M☉
Radius 0.40 ± 0.03[1] R☉
Luminosity 0.022[1] L☉
Temperature 3466 ± 49[1] K
Metallicity [Fe/H] 0.02 ± 0.09[1] dex
Rotational velocity −25.9 ± 6.6[1] km/s
(v sin i)
Other designations
GJ 3293,[3] LHS 1672,[5] 2MASS
J04283571-2510088, Gaia DR2
4893118771316702720
Database references
SIMBAD data (https://simbad.cds.
unistra.fr/simbad/sim-id?
Ident=GJ+3293)
ARICNS data (https://wwwadd.za
h.uni-heidelberg.de/date
nbanken/aricns/cnspage
s/4c03369.htm)
The GJ 3293 planetary system[6]
Companion
Semimajor axis Orbital period
(in order from Mass Eccentricity Inclination Radius
(AU) (days)
star)
+0.000 03 +0.0078 +0.20
e ≥3.28 ± 0.64 M🜨 0.082 08 −0.000 04 13.2543 −0.0104 0.21 −0.14 — —
+0.88 +0.0083
b ≥23.54 −0.89 M🜨 0.143 39 ± 0.000 03 30.5987 −0.0084 0.06 ± 0.04 — —
≥7.60 ± 1.05 M🜨 +0.000 17 +0.0628 +0.13
d 0.193 94 −0.000 18 48.1345 −0.0661 0.12 −0.09 — —
+1.24 +0.000 48 +0.2429 +0.10
c ≥21.09 −1.26 M🜨 0.361 75 −0.000 47 122.6196 −0.2371 0.11 −0.08 — —
References
1. Astudillo-Defru, Nicola; Bonfils, Xavier; Delfosse, Xavier; Ségransan, Damien; Forveille,
Thierry; Bouchy, François; Gillon, Michaël; Lovis, Christophe; Mayor, Michel; Neves, Vasco;
Pepe, Francesco; Perrier, Christian; Queloz, Didier; Rojo, Patricio; Santos, Nuno C.; Udry,
Stéphane (2015). "Planetary systems and stellar activity of the M dwarfs GJ 3293, GJ 3341,
and GJ 3543". Astronomy & Astrophysics. 575: A119. arXiv:1411.7048v1 (https://arxiv.org/ab
s/1411.7048v1). Bibcode:2015A&A...575A.119A (https://ui.adsabs.harvard.edu/abs/2015A&
A...575A.119A). doi:10.1051/0004-6361/201424253 (https://doi.org/10.1051%2F0004-636
1%2F201424253). S2CID 67754095 (https://api.semanticscholar.org/CorpusID:67754095).
2. 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 (htt
ps://arxiv.org/abs/2208.00211). Bibcode:2023A&A...674A...1G (https://ui.adsabs.harvard.ed
u/abs/2023A&A...674A...1G). doi:10.1051/0004-6361/202243940 (https://doi.org/10.1051%2
F0004-6361%2F202243940). S2CID 244398875 (https://api.semanticscholar.org/CorpusID:
244398875). Gaia DR3 record for this source (https://vizier.u-strasbg.fr/viz-bin/VizieR-S?Gai
a%20DR3%204893118771316702720) at VizieR.
3. "Gliese 3293" (http://www.openexoplanetcatalogue.com/planet/Gliese%203293%20b/),
Open Exoplanet Catalogue, MIT, retrieved 2016-08-11
4. Soubiran, C.; Jasniewicz, G.; Chemin, L.; Zurbach, C.; Brouillet, N.; Panuzzo, P.; Sartoretti,
P.; Katz, D.; Le Campion, J. -F.; Marchal, O.; Hestroffer, D.; Thévenin, F.; Crifo, F.; Udry, S.;
Cropper, M.; Seabroke, G.; Viala, Y.; Benson, K.; Blomme, R.; Jean-Antoine, A.; Huckle, H.;
Smith, M.; Baker, S. G.; Damerdji, Y.; Dolding, C.; Frémat, Y.; Gosset, E.; Guerrier, A.; Guy, L.
P.; et al. (2018). "Gaia Data Release 2. The catalogue of radial velocity standard stars".
Astronomy and Astrophysics. 616: A7. arXiv:1804.09370 (https://arxiv.org/abs/1804.09370).
Bibcode:2018A&A...616A...7S (https://ui.adsabs.harvard.edu/abs/2018A&A...616A...7S).
doi:10.1051/0004-6361/201832795 (https://doi.org/10.1051%2F0004-6361%2F201832795).
S2CID 247759802 (https://api.semanticscholar.org/CorpusID:247759802).
5. "GJ 3293 -- High proper-motion Star" (http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html
&Ident=GJ%203293), SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved
2011-12-08
6. Astudillo-Defru, Nicola; Forveille, Thierry; Bonfils, Xavier; Ségransan, Damien; Bouchy,
François; Delfosse, Xavier; et al. (2017). "The HARPS search for southern extra-solar
planets. XLI. A dozen planets around the M dwarfs GJ 3138, GJ 3323, GJ 273, GJ 628, and
GJ 3293" (https://www.aanda.org/articles/aa/full_html/2017/06/aa30153-16/aa30153-16.htm
l). Astronomy and Astrophysics. 602. A88. arXiv:1703.05386 (https://arxiv.org/abs/1703.0538
6). Bibcode:2017A&A...602A..88A (https://ui.adsabs.harvard.edu/abs/2017A&A...602A..88
A). doi:10.1051/0004-6361/201630153 (https://doi.org/10.1051%2F0004-6361%2F2016301
53). S2CID 119418595 (https://api.semanticscholar.org/CorpusID:119418595).
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