Gliese 674 information

Gliese 674
Observation data; Epoch J2000 Equinox J2000
Constellation	Ara
Right ascension	17h 28m 39.9455s
Declination	–46° 53′ 42.6932″
Apparent magnitude (V)	9.38
Characteristics
Spectral type	M3V
U−B color index	1.20
B−V color index	1.553±0.017
R−I color index	1.33
Astrometry
Radial velocity (Rv)	−2.904±0.0004 km/s
Proper motion (μ)	RA: 572.582±0.102 mas/yr ; Dec.: −880.251±0.068 mas/yr
Parallax (π)	219.6463 ± 0.0262 mas
Distance	14.849 ± 0.002 ly ; (4.5528 ± 0.0005 pc)
Absolute magnitude (MV)	11.09
Details
Mass	0.353±0.008 M☉
Radius	0.361+0.012; −0.011 R☉
Luminosity	0.01575±0.00037 L☉
Temperature	3,404+59; −57 K
Metallicity [Fe/H]	−0.30±0.08 dex
Rotation	32.9±0.1 d
Rotational velocity (v sin i)	3.2±1.2 km/s
Age	0.1–1.0 Gyr
Other designations
	CD−46°11540, GJ 674, HIP 85523, LFT 1351, LHS 449, LPM 645, LTT 6942
Database references
SIMBAD	The star
	b
Exoplanet Archive	data
ARICNS	data
	Gliese 674 Location of Gliese 674 in the constellation Ara;

Gliese 674 (GJ 674) is a small red dwarf star with an exoplanetary companion in the southern constellation of Ara. It is too faint to be visible to the naked eye, having an apparent visual magnitude of 9.38^[2] and an absolute magnitude of 11.09.^[2] The system is located at a distance of 14.8 light-years from the Sun based on parallax measurements,^[1] but is drifting closer with a radial velocity of −2.9 km/s.^[5] It is a candidate member of the 200 million year old Castor stream of co-moving stars.^[11]

This is a low-mass M-type main-sequence star with a stellar classification of M3V.^[3] The star is weakly active and show star spots on a regular basis. Even low activity red dwarfs can flare, and in 2018 this star was observed emitting a hot ultraviolet flare with a total energy of 5.6×10²³ Joules and a duration of a few hours. GJ 674 is at an intermediate stage of spin-down with a rotation period of 33.4 days, suggesting an age of up to a few billion years.^[12] It is smaller and less massive than the Sun, and is radiating just 1.6%^[9] of the Sun's luminosity from its photosphere at an effective temperature of 3,404 K.^[7]

^ ^a ^b ^c ^d Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference Torres_et_al_2006 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Koen_et_al_2010 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Soubiran_et_al_2018 was invoked but never defined (see the help page).
^ Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Pineda_et_al_2021 was invoked but never defined (see the help page).
^ Cite error: The named reference mnras452_3_2745 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Bonfils2007 was invoked but never defined (see the help page).
^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
^ Cite error: The named reference Caballero2010 was invoked but never defined (see the help page).
^ Cite error: The named reference Christian_Schneider_et_al_2019 was invoked but never defined (see the help page).

[Gaia_DR2-1] Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).

[Anderson_Francis_2012-2] Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).

[Torres_et_al_2006-3] Cite error: The named reference Torres_et_al_2006 was invoked but never defined (see the help page).

[Koen_et_al_2010-4] Cite error: The named reference Koen_et_al_2010 was invoked but never defined (see the help page).

[Soubiran_et_al_2018-5] Cite error: The named reference Soubiran_et_al_2018 was invoked but never defined (see the help page).

[GaiaEDR3-6] Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.

[Pineda_et_al_2021-7] ^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Pineda_et_al_2021 was invoked but never defined (see the help page).

[mnras452_3_2745-8] Cite error: The named reference mnras452_3_2745 was invoked but never defined (see the help page).

[Bonfils2007-9] Cite error: The named reference Bonfils2007 was invoked but never defined (see the help page).

[SIMBAD-10] Cite error: The named reference SIMBAD was invoked but never defined (see the help page).

[Caballero2010-11] Cite error: The named reference Caballero2010 was invoked but never defined (see the help page).

[Christian_Schneider_et_al_2019-12] Cite error: The named reference Christian_Schneider_et_al_2019 was invoked but never defined (see the help page).

Observation data Epoch J2000 Equinox J2000
Constellation	Ara
Right ascension	17^h 28^m 39.9455^s^[1]
Declination	–46° 53′ 42.6932″^[1]
Apparent magnitude (V)	9.38^[2]
Characteristics
Spectral type	M3V^[3]
U−B color index	1.20^[4]
B−V color index	1.553±0.017^[2]
R−I color index	1.33^[4]
Astrometry

Radial velocity (R_v)	−2.904±0.0004^[5] km/s
Proper motion (μ)	RA: 572.582±0.102 mas/yr^[1] Dec.: −880.251±0.068 mas/yr^[1]
Parallax (π)	219.6463 ± 0.0262 mas^[6]
Distance	14.849 ± 0.002 ly (4.5528 ± 0.0005 pc)
Absolute magnitude (M_V)	11.09^[2]

Details

Mass	0.353±0.008^[7] `M`_☉
Radius	0.361+0.012 −0.011^[7] `R`_☉
Luminosity	0.01575±0.00037^[7] `L`_☉
Temperature	3,404+59 −57^[7] K
Metallicity [Fe/H]	−0.30±0.08^[7] dex
Rotation	32.9±0.1 d^[8]
Rotational velocity (v sin i)	3.2±1.2^[3] km/s
Age	0.1–1.0^[9] Gyr

Other designations
CD−46°11540, GJ 674, HIP 85523, LFT 1351, LHS 449, LPM 645, LTT 6942^[10]
Database references
SIMBAD	The star
	b
Exoplanet Archive	data
ARICNS	data
Gliese 674 Location of Gliese 674 in the constellation Ara

Gliese 674 information

and 26 Related for: Gliese 674 information

Gliese 674

Gliese 674 b

Gliese 445

Gliese 229

Gliese 876

List of nearest stars and brown dwarfs

Gliese 581

List of nearest bright stars

Gliese 65

Gliese 832

Gliese 570

List of nearest exoplanets

Gliese 667

Gliese 440

Lists of stars

Wolf 1061c

High Accuracy Radial Velocity Planet Searcher

Gliese 436

T Tauri star

Gliese 876 d

Gliese 180

Altair

Gliese 526

Gliese 687

Gliese 752

Delta Pavonis