Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Boötes |
Right ascension | 14h 22m 52.9255s [2] |
Declination | +53° 48′ 37.307″ [2] |
Apparent magnitude (V) | 7.4 - 14.0 [3] |
Characteristics | |
Spectral type | M3e-6e [3] |
B−V color index | +1.3 [4] |
Variable type | Mira [3] |
Astrometry | |
Radial velocity (Rv) | −17.00 [5] km/s |
Proper motion (μ) |
RA: +7.283
[2]
mas/
yr Dec.: −12.789 [2] mas/ yr |
Parallax (π) | 0.5746 ± 0.0407 mas [2] |
Distance | 5,700 ± 400
ly (1,700 ± 100 pc) |
Details | |
Mass | 2.7 [6] M☉ |
Radius | 491 [7] R☉ |
Luminosity | 18,793 [6] L☉ |
Surface gravity (log g) | −0.53 [6] cgs |
Temperature | 3,007 [6] K |
Age | 631 [6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
S Boötis is a Mira variable in the constellation Boötes. It ranges between magnitudes 7.8 and 13.8 over a period of approximately 270 days. [3] It is too faint to be seen with the naked eye, however when it is near maximum brightness it can be seen with binoculars. [9]
S Boötis was discovered at Bonn Observatory by Friedrich Wilhelm Argelander in 1860. [10] [11] [12]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Boötes |
Right ascension | 14h 22m 52.9255s [2] |
Declination | +53° 48′ 37.307″ [2] |
Apparent magnitude (V) | 7.4 - 14.0 [3] |
Characteristics | |
Spectral type | M3e-6e [3] |
B−V color index | +1.3 [4] |
Variable type | Mira [3] |
Astrometry | |
Radial velocity (Rv) | −17.00 [5] km/s |
Proper motion (μ) |
RA: +7.283
[2]
mas/
yr Dec.: −12.789 [2] mas/ yr |
Parallax (π) | 0.5746 ± 0.0407 mas [2] |
Distance | 5,700 ± 400
ly (1,700 ± 100 pc) |
Details | |
Mass | 2.7 [6] M☉ |
Radius | 491 [7] R☉ |
Luminosity | 18,793 [6] L☉ |
Surface gravity (log g) | −0.53 [6] cgs |
Temperature | 3,007 [6] K |
Age | 631 [6] Myr |
Other designations | |
Database references | |
SIMBAD | data |
S Boötis is a Mira variable in the constellation Boötes. It ranges between magnitudes 7.8 and 13.8 over a period of approximately 270 days. [3] It is too faint to be seen with the naked eye, however when it is near maximum brightness it can be seen with binoculars. [9]
S Boötis was discovered at Bonn Observatory by Friedrich Wilhelm Argelander in 1860. [10] [11] [12]