82 Virginis, also known as m Virginis, is a star in the constellation Virgo. It is located 160 pc (520 light-years) from Earth based on a parallax of 6.249±0.2611 mas from Gaia DR2. [1] It is a red giant, based on its spectral type of M1III. [2] Its apparent magnitude is 5.01. [3]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Virgo |
Right ascension | 13h 41m 36.77s [1] |
Declination | −08° 42′ 10.73″ [1] |
Apparent magnitude (V) | 5.01 [3] |
Characteristics | |
Evolutionary stage | Red giant |
Spectral type | M1III |
Apparent magnitude (U) | 8.59 [2] |
Apparent magnitude (B) | 6.64 [2] |
Apparent magnitude (G) | 4.149 [2] |
Apparent magnitude (J) | 1.68 [2] |
Apparent magnitude (H) | 0.88 [2] |
Apparent magnitude (K) | 0.64 [2] |
B−V color index | 1.623±0.009 [4] |
Astrometry | |
Radial velocity (Rv) | −36.6±2 [2] km/s |
Proper motion (μ) |
RA: -91.65
mas/
yr
[4] Dec.: 40.28 mas/ yr [4] |
Parallax (π) | 6.2490 ± 0.2611 mas [1] |
Distance | 521.7
ly (160.03 pc) [1] |
Details | |
Radius | 70.81 [1] R☉ |
Luminosity | 887.925 [1] L☉ |
Surface gravity (log g) | 0.714 [3] cgs |
Temperature | 3675 [3] K |
Rotational velocity (v sin i) | 2.3±1 [5] km/s |
Other designations | |
Database references | |
SIMBAD | data |
82 Virginis is a red giant star, based on its spectral type of M1III, [2] where M means that it is a M-type star and III is the luminosity class, meaning that it is a giant star. The star is 70.8 times larger than the Sun and 890 times more voluminous. [1] The effective temperature of the star is of 3675 K, [3] which is 2197 degrees colder than the solar temperature of 5772 K. Its rotational velocity is of 2.3 km/s. [5] The angular diameter of the star, as measured from the CHARM survey, is of 4.48±0.28 mas. [6] At the current distance, this would lead to a radius of 77 R☉, which is similar to the radius derived by Gaia DR2.
The parallax of the star is measured at 6.249±0.2611 mas from Gaia DR2, translating to a distance of 160 parsecs (520 light-years) from Earth. [1] The star is moving towards Earth at a velocity of 36.6 km/s. [2] Its apparent magnitude is 5.01, [3] making it visible to the naked eye. [a]
82 Virginis, also known as m Virginis, is a star in the constellation Virgo. It is located 160 pc (520 light-years) from Earth based on a parallax of 6.249±0.2611 mas from Gaia DR2. [1] It is a red giant, based on its spectral type of M1III. [2] Its apparent magnitude is 5.01. [3]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Virgo |
Right ascension | 13h 41m 36.77s [1] |
Declination | −08° 42′ 10.73″ [1] |
Apparent magnitude (V) | 5.01 [3] |
Characteristics | |
Evolutionary stage | Red giant |
Spectral type | M1III |
Apparent magnitude (U) | 8.59 [2] |
Apparent magnitude (B) | 6.64 [2] |
Apparent magnitude (G) | 4.149 [2] |
Apparent magnitude (J) | 1.68 [2] |
Apparent magnitude (H) | 0.88 [2] |
Apparent magnitude (K) | 0.64 [2] |
B−V color index | 1.623±0.009 [4] |
Astrometry | |
Radial velocity (Rv) | −36.6±2 [2] km/s |
Proper motion (μ) |
RA: -91.65
mas/
yr
[4] Dec.: 40.28 mas/ yr [4] |
Parallax (π) | 6.2490 ± 0.2611 mas [1] |
Distance | 521.7
ly (160.03 pc) [1] |
Details | |
Radius | 70.81 [1] R☉ |
Luminosity | 887.925 [1] L☉ |
Surface gravity (log g) | 0.714 [3] cgs |
Temperature | 3675 [3] K |
Rotational velocity (v sin i) | 2.3±1 [5] km/s |
Other designations | |
Database references | |
SIMBAD | data |
82 Virginis is a red giant star, based on its spectral type of M1III, [2] where M means that it is a M-type star and III is the luminosity class, meaning that it is a giant star. The star is 70.8 times larger than the Sun and 890 times more voluminous. [1] The effective temperature of the star is of 3675 K, [3] which is 2197 degrees colder than the solar temperature of 5772 K. Its rotational velocity is of 2.3 km/s. [5] The angular diameter of the star, as measured from the CHARM survey, is of 4.48±0.28 mas. [6] At the current distance, this would lead to a radius of 77 R☉, which is similar to the radius derived by Gaia DR2.
The parallax of the star is measured at 6.249±0.2611 mas from Gaia DR2, translating to a distance of 160 parsecs (520 light-years) from Earth. [1] The star is moving towards Earth at a velocity of 36.6 km/s. [2] Its apparent magnitude is 5.01, [3] making it visible to the naked eye. [a]