GJ 3293

GJ 3293
Observation data; Epoch J2000 Equinox ICRS
Constellation	Eridanus
Right ascension	04h 28m 35.71911s
Declination	−25° 10′ 09.2979″
Apparent magnitude (V)	11.96
Characteristics
Evolutionary stage	main sequence
Spectral type	M2.5
Astrometry
Radial velocity (Rv)	+13.116±0.0024 km/s
Proper motion (μ)	RA: −81.375 mas/yr ; Dec.: −485.454 mas/yr
Parallax (π)	49.4868±0.0227 mas
Distance	65.91 ± 0.03 ly ; (20.207 ± 0.009 pc)
Absolute magnitude (MV)	10.66
Details
Mass	0.420 M☉
Radius	0.40±0.03 R☉
Luminosity	0.022 L☉
Temperature	3,466±49 K
Metallicity [Fe/H]	0.02±0.09 dex
Rotational velocity (v sin i)	−25.9±6.6 km/s
Other designations
	GJ 3293, LHS 1672, 2MASS J04283571-2510088, Gaia DR2 4893118771316702720
Database references
SIMBAD	data
Exoplanet Archive	data
ARICNS	data

GJ 3293 (sometimes Gliese 3293) is a star in the constellation of Eridanus, that is orbited by four planets, two of which (GJ 3293b & GJ 3293d) are located within the star's habitable zone. It is located at the celestial coordinates: Right Ascension 04^h 28^m 35.71911^s, Declination −25° 10′ 09.2979″. With an apparent visual magnitude of 11.96, this star is too faint to be seen with the naked eye. It can be viewed with a telescope having an aperture of at least 4 in (10 cm). The estimated distance to GJ 3293 is 65.9 light-years (20.2 parsecs), based on its stellar parallax. GJ 3293 is significantly smaller and cooler than the Sun.

Planetary system

In 2015, it was discovered that GJ 3293 possessed two planets, and in 2017 an additional two planets were discovered, making a total of four. Two of these planets are located within the habitable zone: GJ 3293b and GJ 3293d.

The GJ 3293 planetary system
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination (°)	Radius
e	≥3.28±0.64 `M`_🜨	0.08208+0.00003 −0.00004	13.2543+0.0078 −0.0104	0.21+0.20 −0.14	—	—
b	≥23.54+0.88 −0.89 `M`_🜨	0.14339±0.00003	30.5987+0.0083 −0.0084	0.06±0.04	—	—
d	≥7.60±1.05 `M`_🜨	0.19394+0.00017 −0.00018	48.1345+0.0628 −0.0661	0.12+0.13 −0.09	—	—
c	≥21.09+1.24 −1.26 `M`_🜨	0.36175+0.00048 −0.00047	122.6196+0.2429 −0.2371	0.11+0.10 −0.08	—	—

References

1 2 3 4 5 6 7 8 9 10 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. Bibcode:2015A&A...575A.119A. doi:10.1051/0004-6361/201424253. S2CID 67754095.
1 2 3 4 5 6 7 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. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
1 2 3 "Gliese 3293", Open Exoplanet Catalogue, MIT, retrieved 2016-08-11
1 2 3 4 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". Astronomy and Astrophysics. 602. A88. arXiv:1703.05386. Bibcode:2017A&A...602A..88A. doi:10.1051/0004-6361/201630153. S2CID 119418595.
↑ 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. Bibcode:2018A&A...616A...7S. doi:10.1051/0004-6361/201832795. S2CID 247759802.
1 2 "GJ 3293 -- High proper-motion Star", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2011-12-08

[arxiv-1] 1 2 3 4 5 6 7 8 9 10 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. Bibcode:2015A&A...575A.119A. doi:10.1051/0004-6361/201424253. S2CID 67754095.

[GaiaDR3-2] 1 2 3 4 5 6 7 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. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

[oepc-3] 1 2 3 "Gliese 3293", Open Exoplanet Catalogue, MIT, retrieved 2016-08-11

[arxiv.org-4] 1 2 3 4 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". Astronomy and Astrophysics. 602. A88. arXiv:1703.05386. Bibcode:2017A&A...602A..88A. doi:10.1051/0004-6361/201630153. S2CID 119418595.

[GaiaRV-5] 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. Bibcode:2018A&A...616A...7S. doi:10.1051/0004-6361/201832795. S2CID 247759802.

[SIMBAD-6] 1 2 "GJ 3293 -- High proper-motion Star", SIMBAD, Centre de Données astronomiques de Strasbourg, retrieved 2011-12-08