NGTS-1
High proper motion red dwarf / From Wikipedia, the free encyclopedia
NGTS-1, also designated as TOI-551 is a solitary star located in the southern constellation Columba, the dove. With an apparent magnitude of 15.52,[2] NGTS-1 can only be seen through a powerful telescope. Gaia DR3 parallax measurements imply a distance of 710 light-years[1] and it is drifting away rapidly with a heliocentric radial velocity of 97.2 km/s.[3]
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Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Columba |
Right ascension | 05h 30m 51.45227s[1] |
Declination | −36° 37′ 50.8957″[1] |
Apparent magnitude (V) | 15.57±0.03[2] |
Characteristics | |
Evolutionary stage | main sequence star[3] |
Spectral type | M0.5[3] |
B−V color index | +1.37[2] |
R−I color index | +1.39[4] |
Astrometry | |
Radial velocity (Rv) | 97.18±0.01[3] km/s |
Proper motion (μ) | RA: −31.887 mas/yr[1] Dec.: −41.077 mas/yr[1] |
Parallax (π) | 4.5935 ± 0.017 mas[1] |
Distance | 710 ± 3 ly (217.7 ± 0.8 pc) |
Details[3] | |
Mass | 0.617+0.023 −0.062 M☉ |
Radius | 0.573±0.077 R☉ |
Luminosity | (7.03±0.09)×10−2[5] L☉ |
Surface gravity (log g) | 4.71±0.23 cgs |
Temperature | 3,916+71 −63 K |
Rotational velocity (v sin i) | <1.0 km/s |
Other designations | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
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