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Gliese 341 Information

TOI-540
Observation data; Epoch J2000 Equinox J2000
Constellation	Pictor
Right ascension	05h 05m 14.42843s
Declination	−47° 56′ 15.5263″
Apparent magnitude (V)	14.365
Characteristics
Evolutionary stage	Main sequence
Spectral type	M
Apparent magnitude (B)	15.960±0.07
Apparent magnitude (V)	14.365±0.04
Apparent magnitude (G)	12.874±0.003
Apparent magnitude (J)	9.755±0.022
Apparent magnitude (H)	9.170±0.022
Apparent magnitude (K)	8.900±0.021
Astrometry
Radial velocity (Rv)	17.33±1.03 km/s
Proper motion (μ)	RA: -65.901 mas/ yr ; Dec.: 24.895 mas/ yr
Parallax (π)	71.5134 ± 0.0215 mas
Distance	45.61 ± 0.01 ly ; (13.983 ± 0.004 pc)
Details
Mass	0.159±0.014 M☉
Radius	0.1895±0.0079 R☉
Luminosity (bolometric)	0.00346±0.00021 L☉
Temperature	3216±83 K
Rotation	0.72610±0.00039 d
Rotational velocity (v sin i)	13.5±1.5 km/s
Age	0.1-2 Gyr
Other designations
	TOI-540, TIC 200322593, 2MASS J05051443-4756154, UPM J0505-4756
Database references
SIMBAD	data

Gliese 341
Observation data; Epoch J2000 Equinox J2000
Constellation	Carina
Right ascension	09h 21m 37.60154s
Declination	−60° 16′ 55.0300″
Apparent magnitude (V)	9.465
Characteristics
Evolutionary stage	Main sequence
Spectral type	M0.0
Apparent magnitude (B)	10.955
Apparent magnitude (V)	9.465
Apparent magnitude (G)	8.681±0.003
Apparent magnitude (J)	6.442±0.023
Apparent magnitude (H)	5.793±0.033
Apparent magnitude (K)	5.587±0.021
Astrometry
Radial velocity (Rv)	39.59±0.14 km/s
Proper motion (μ)	RA: -840.185 mas/ yr ; Dec.: 182.056 mas/ yr
Parallax (π)	95.6982 ± 0.0145 mas
Distance	34.082 ± 0.005 ly ; (10.450 ± 0.002 pc)
Details
Mass	0.522 M☉
Radius	0.506 R☉
Surface gravity (log g)	4.72±0.02 cgs
Temperature	3770±40 K
Other designations
	CD−59 2351, CPD−59 1362, GJ 341, HD 304636, HIP 45908, L 140-9, LFT 643, LHS 2128, LTT 3453, NLTT 21618, TOI-741, TIC 359271092, TYC 8940-2067-1
Database references
SIMBAD	data

Gliese 341 is a red dwarf star located 34.1 light-years (10.5 parsecs) away in the constellation Carina. It hosts one known exoplanet.

Planetary system

Evidence of a transiting exoplanet, Gliese 341 b, was found in data from TESS,^[5] and was confirmed in January 2024 along with a spectrum from JWST. The spectrum is consistent with the planet having no atmosphere, a hazy atmosphere, or an atmosphere mainly composed of certain molecules such as water vapor, while ruling out other types of atmospheres.^[4]

Gliese 341 b is slightly smaller than Earth, at 92% of its radius. Its mass is known to be less than 4.5 times that of Earth, and is predicted to be about 0.72±0.14 M_🜨 based on its radius. It orbits close to its star, completing an orbit every 7.6 days, and has an equilibrium temperature of 540 K (267 °C; 512 °F).^[4]

The Gliese 341 planetary system^[4]
Companion (in order from star)	Mass	Semimajor axis ( AU)	Orbital period ( days)	Eccentricity	Inclination	Radius
b	<4.5 $M$ _🜨	0.0577^{[note 1]}	7.576863	—	89.22+0.54 −0.96 °	0.92±0.05 $R$ _🜨

Notes

^ Calculated from a/R_*

References

^ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.
^ ^a ^b ^c ^d ^e ^f 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.
^ ^a ^b ^c ^d ^e ^f ^g ^h "GJ 341". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 15 January 2024.
^ ^a ^b ^c ^d Kirk, James; Stevenson, Kevin B.; et al. (March 2024). "JWST/NIRCam Transmission Spectroscopy of the Nearby Sub-Earth GJ 341b". The Astronomical Journal. 167 (3): 90. arXiv: 2401.06043. Bibcode: 2024AJ....167...90K. doi: 10.3847/1538-3881/ad19df.{{ cite journal}}: CS1 maint: unflagged free DOI ( link)
^ ^a ^b "ExoFOP TIC 359271092". exofop.ipac.caltech.edu. Retrieved 15 January 2024.

TOI-540 Information

TOI-540 is a red dwarf star located 45.6 light-years (14.0 parsecs) away in the constellation Pictor. It has about 16% the mass and 19% the radius of the Sun, and a temperature of about 3,216 K (2,943 °C; 5,329 °F). This is a rapidly-rotating star, with a rotation period of only 17 hours. TOI-540 hosts one known exoplanet.

Planetary system

The exoplanet TOI-540 b is a transiting planet smaller than Earth, discovered in 2020 by TESS. It orbits very close to its star, completing an orbit in just over a day, and has an equilibrium temperature of 611 K (338 °C; 640 °F).^[4]

The TOI-540 planetary system^[4]
Companion (in order from star)	Mass	Semimajor axis ( AU)	Orbital period ( days)	Eccentricity	Inclination	Radius
b	—	0.01223±0.00036	1.2391491(17)	0	86.80±0.28 °	0.903±0.052 $R$ _🜨

References

^ "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.
^ ^a ^b ^c ^d ^e ^f 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.
^ ^a ^b ^c ^d ^e ^f ^g "TOI-540". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 15 January 2024.
^ ^a ^b ^c ^d Ment, Kristo; Irwin, Jonathan; et al. (January 2021). "TOI 540 b: A Planet Smaller than Earth Orbiting a Nearby Rapidly Rotating Low-mass Star". The Astronomical Journal. 161 (1): 23. arXiv: 2009.13623. Bibcode: 2021AJ....161...23M. doi: 10.3847/1538-3881/abbd91.{{ cite journal}}: CS1 maint: unflagged free DOI ( link)

[6] Calculated from a/R_*

[1] "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.

[GaiaDR3-2] ^ ^a ^b ^c ^d ^e ^f 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.

[SIMBAD-3] ^ ^a ^b ^c ^d ^e ^f ^g ^h "GJ 341". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 15 January 2024.

[Kirk2024-4] Kirk, James; Stevenson, Kevin B.; et al. (March 2024). "JWST/NIRCam Transmission Spectroscopy of the Nearby Sub-Earth GJ 341b". The Astronomical Journal. 167 (3): 90. arXiv: 2401.06043. Bibcode: 2024AJ....167...90K. doi: 10.3847/1538-3881/ad19df.{{ cite journal}}: CS1 maint: unflagged free DOI ( link)

[ExoFOP-5] "ExoFOP TIC 359271092". exofop.ipac.caltech.edu. Retrieved 15 January 2024.

[7] "Finding the constellation which contains given sky coordinates". djm.cc. 2 August 2008.

[GaiaDR3-8] ^ ^a ^b ^c ^d ^e ^f 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.

[SIMBAD-9] ^ ^a ^b ^c ^d ^e ^f ^g "TOI-540". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 15 January 2024.

[Ment2021-10] Ment, Kristo; Irwin, Jonathan; et al. (January 2021). "TOI 540 b: A Planet Smaller than Earth Orbiting a Nearby Rapidly Rotating Low-mass Star". The Astronomical Journal. 161 (1): 23. arXiv: 2009.13623. Bibcode: 2021AJ....161...23M. doi: 10.3847/1538-3881/abbd91.{{ cite journal}}: CS1 maint: unflagged free DOI ( link)

[1]

[2]

[3]

[4]

[5]

[note 1]

[1]

[2]

[3]

[4]

Observation data Epoch J2000 Equinox J2000
Constellation	Carina^[1]
Right ascension	09^h 21^m 37.60154^s^[2]
Declination	−60° 16′ 55.0300″^[2]
Apparent magnitude (V)	9.465^[3]
Characteristics
Evolutionary stage	Main sequence
Spectral type	M0.0^[3]
Apparent magnitude (B)	10.955^[3]
Apparent magnitude (V)	9.465^[3]
Apparent magnitude (G)	8.681±0.003^[2]
Apparent magnitude (J)	6.442±0.023^[3]
Apparent magnitude (H)	5.793±0.033^[3]
Apparent magnitude (K)	5.587±0.021^[3]
Astrometry

Radial velocity (R_v)	39.59±0.14^[2] km/s
Proper motion (μ)	RA: -840.185 mas/ yr^[2] Dec.: 182.056 mas/ yr^[2]
Parallax (π)	95.6982 ± 0.0145 mas^[2]
Distance	34.082 ± 0.005 ly (10.450 ± 0.002 pc)

Details^[4]

Mass	0.522^[5] `M`_☉
Radius	0.506 `R`_☉
Surface gravity (log g)	4.72±0.02 cgs
Temperature	3770±40 K

Other designations
CD−59 2351, CPD−59 1362, GJ 341, HD 304636, HIP 45908, L 140-9, LFT 643, LHS 2128, LTT 3453, NLTT 21618, TOI-741, TIC 359271092, TYC 8940-2067-1^[3]
Database references
SIMBAD	data

Observation data Epoch J2000 Equinox J2000
Constellation	Pictor^[1]
Right ascension	05^h 05^m 14.42843^s^[2]
Declination	−47° 56′ 15.5263″^[2]
Apparent magnitude (V)	14.365^[3]
Characteristics
Evolutionary stage	Main sequence
Spectral type	M^[4]
Apparent magnitude (B)	15.960±0.07^[3]
Apparent magnitude (V)	14.365±0.04^[3]
Apparent magnitude (G)	12.874±0.003^[2]
Apparent magnitude (J)	9.755±0.022^[3]
Apparent magnitude (H)	9.170±0.022^[3]
Apparent magnitude (K)	8.900±0.021^[3]
Astrometry

Radial velocity (R_v)	17.33±1.03^[2] km/s
Proper motion (μ)	RA: -65.901 mas/ yr^[2] Dec.: 24.895 mas/ yr^[2]
Parallax (π)	71.5134 ± 0.0215 mas^[2]
Distance	45.61 ± 0.01 ly (13.983 ± 0.004 pc)

Details^[4]

Mass	0.159±0.014 `M`_☉
Radius	0.1895±0.0079 `R`_☉
Luminosity (bolometric)	0.00346±0.00021 `L`_☉
Temperature	3216±83 K
Rotation	0.72610±0.00039 d
Rotational velocity (v sin i)	13.5±1.5 km/s
Age	0.1-2 Gyr

Other designations
TOI-540, TIC 200322593, 2MASS J05051443-4756154, UPM J0505-4756^[3]
Database references
SIMBAD	data

Observation data Epoch J2000 Equinox J2000
Constellation	Carina^[1]
Right ascension	09^h 21^m 37.60154^s^[2]
Declination	−60° 16′ 55.0300″^[2]
Apparent magnitude (V)	9.465^[3]
Characteristics
Evolutionary stage	Main sequence
Spectral type	M0.0^[3]
Apparent magnitude (B)	10.955^[3]
Apparent magnitude (V)	9.465^[3]
Apparent magnitude (G)	8.681±0.003^[2]
Apparent magnitude (J)	6.442±0.023^[3]
Apparent magnitude (H)	5.793±0.033^[3]
Apparent magnitude (K)	5.587±0.021^[3]
Astrometry

Radial velocity (R_v)	39.59±0.14^[2] km/s
Proper motion (μ)	RA: -840.185 mas/ yr^[2] Dec.: 182.056 mas/ yr^[2]
Parallax (π)	95.6982 ± 0.0145 mas^[2]
Distance	34.082 ± 0.005 ly (10.450 ± 0.002 pc)

Details^[4]

Mass	0.522^[5] `M`_☉
Radius	0.506 `R`_☉
Surface gravity (log g)	4.72±0.02 cgs
Temperature	3770±40 K

Other designations
CD−59 2351, CPD−59 1362, GJ 341, HD 304636, HIP 45908, L 140-9, LFT 643, LHS 2128, LTT 3453, NLTT 21618, TOI-741, TIC 359271092, TYC 8940-2067-1^[3]
Database references
SIMBAD	data

Observation data Epoch J2000 Equinox J2000
Constellation	Pictor^[1]
Right ascension	05^h 05^m 14.42843^s^[2]
Declination	−47° 56′ 15.5263″^[2]
Apparent magnitude (V)	14.365^[3]
Characteristics
Evolutionary stage	Main sequence
Spectral type	M^[4]
Apparent magnitude (B)	15.960±0.07^[3]
Apparent magnitude (V)	14.365±0.04^[3]
Apparent magnitude (G)	12.874±0.003^[2]
Apparent magnitude (J)	9.755±0.022^[3]
Apparent magnitude (H)	9.170±0.022^[3]
Apparent magnitude (K)	8.900±0.021^[3]
Astrometry

Radial velocity (R_v)	17.33±1.03^[2] km/s
Proper motion (μ)	RA: -65.901 mas/ yr^[2] Dec.: 24.895 mas/ yr^[2]
Parallax (π)	71.5134 ± 0.0215 mas^[2]
Distance	45.61 ± 0.01 ly (13.983 ± 0.004 pc)

Details^[4]

Mass	0.159±0.014 `M`_☉
Radius	0.1895±0.0079 `R`_☉
Luminosity (bolometric)	0.00346±0.00021 `L`_☉
Temperature	3216±83 K
Rotation	0.72610±0.00039 d
Rotational velocity (v sin i)	13.5±1.5 km/s
Age	0.1-2 Gyr

Other designations
TOI-540, TIC 200322593, 2MASS J05051443-4756154, UPM J0505-4756^[3]
Database references
SIMBAD	data

Gliese 341 Information

Planetary system

See also

Notes

References

TOI-540 Information

Planetary system

References

Gliese 341 Information

Planetary system

See also

Notes

References

TOI-540 Information

Planetary system

References

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