Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Boötes |
Right ascension | 14h 32m 20.22613s [1] |
Declination | +26° 40′ 38.224″ [1] |
Apparent magnitude (V) | 5.88 [2] (6.61 + 7.08) [3] |
Characteristics | |
Spectral type | A7Vn + F0 [4] |
U−B color index | +0.08 [2] |
B−V color index | +0.21 [2] |
Astrometry | |
Radial velocity (Rv) | −4 [5] km/s |
Proper motion (μ) |
RA: −69.68
[1]
mas/
yr Dec.: −21.90 [1] mas/ yr |
Parallax (π) | 13.58 ± 0.69 mas [1] |
Distance | 240 ± 10
ly (74 ± 4 pc) |
Absolute magnitude (MV) | 2.27 + 2.74 [4] |
Orbit [6] | |
Period (P) | 29.93 yr |
Semi-major axis (a) | 0.200″ |
Eccentricity (e) | 0.160 |
Inclination (i) | 158.0° |
Longitude of the node (Ω) | 23.3° |
Periastron epoch (T) | B 1983.85 |
Argument of periastron (ω) (secondary) | 57.0° |
Details | |
Luminosity | 16.4 [7] L☉ |
Temperature | 7,246 [7] K |
Rotational velocity (v sin i) | 222 [8] km/s |
Other designations | |
Database references | |
SIMBAD | data |
HD 127726 is a binary star system in the northern constellation of Boötes. The pair consist of a rapidly-rotating A-type main-sequence star and a fainter F-type companion, orbiting each other with a period of 29.93 years and an orbital eccentricity (ovalness) of 0.16. They have a combined apparent visual magnitude of 5.88, which is bright enough to be dimly visible to the naked eye. The system is located at a distance of approximately 240 light years from the Sun.
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Boötes |
Right ascension | 14h 32m 20.22613s [1] |
Declination | +26° 40′ 38.224″ [1] |
Apparent magnitude (V) | 5.88 [2] (6.61 + 7.08) [3] |
Characteristics | |
Spectral type | A7Vn + F0 [4] |
U−B color index | +0.08 [2] |
B−V color index | +0.21 [2] |
Astrometry | |
Radial velocity (Rv) | −4 [5] km/s |
Proper motion (μ) |
RA: −69.68
[1]
mas/
yr Dec.: −21.90 [1] mas/ yr |
Parallax (π) | 13.58 ± 0.69 mas [1] |
Distance | 240 ± 10
ly (74 ± 4 pc) |
Absolute magnitude (MV) | 2.27 + 2.74 [4] |
Orbit [6] | |
Period (P) | 29.93 yr |
Semi-major axis (a) | 0.200″ |
Eccentricity (e) | 0.160 |
Inclination (i) | 158.0° |
Longitude of the node (Ω) | 23.3° |
Periastron epoch (T) | B 1983.85 |
Argument of periastron (ω) (secondary) | 57.0° |
Details | |
Luminosity | 16.4 [7] L☉ |
Temperature | 7,246 [7] K |
Rotational velocity (v sin i) | 222 [8] km/s |
Other designations | |
Database references | |
SIMBAD | data |
HD 127726 is a binary star system in the northern constellation of Boötes. The pair consist of a rapidly-rotating A-type main-sequence star and a fainter F-type companion, orbiting each other with a period of 29.93 years and an orbital eccentricity (ovalness) of 0.16. They have a combined apparent visual magnitude of 5.88, which is bright enough to be dimly visible to the naked eye. The system is located at a distance of approximately 240 light years from the Sun.