Gliese 674

Coordinates: Sky map 17h 28m 39.9463s, −46° 53′ 42.685″
Source: Wikipedia, the free encyclopedia.
Gliese 674
Observation data
Epoch J2000      Equinox J2000
Constellation Ara
Right ascension 17h 28m 39.9455s[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]
Distance
14.849 ± 0.002 ly
(4.5528 ± 0.0005 pc)
Absolute magnitude (MV)11.09[2]
Details
Gyr
LTT 6942[10]
Database references
Exoplanet Archive
data
ARICNSdata
Gliese 674 is located in the constellation Ara.
Gliese 674 is located in the constellation Ara.
Gliese 674
Location of Gliese 674 in the constellation Ara

Gliese 674 (GJ 674) is a small

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

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]

Planetary system

On January 7, 2007, Bonfils used the

ESO and found an intermediate mass planet orbiting close to the red dwarf star in an eccentric orbit.[9] This system is a promising candidate for detecting radio emission caused by interaction between the planet and the stellar wind.[13]

The Gliese 674 planetary system[9]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b ≥11.8 M🜨 0.039 4.6938 ± 0.007 0.2 ± 0.02 — —

See also

References

  1. ^
    doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR
    .
  2. ^
    S2CID 119257644
    .
  3. ^
    S2CID 16080025
    .
  4. ^
    doi:10.1111/j.1365-2966.2009.16182.x
    .
  5. ^
    S2CID 52952408
    .
  6. doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR
    .
  7. ^
    S2CID 235435757
    . 40.
  8. S2CID 119181646
    .
  9. ^
    S2CID 119671420
    .
  10. ^ "CD-46 11540". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-11-22.
  11. S2CID 118875432
    . A98.
  12. S2CID 119427057
    . L26.
  13. doi:10.1093/mnras/stz1696
    .

External links

Notes

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