BX Trianguli
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Triangulum |
| Right ascension | 02h 20m 50.85419s |
| Declination | +33° 20′ 47.4683″ |
| Apparent magnitude (V) | 13.366±0.006 |
| Characteristics | |
| Evolutionary stage | Red dwarf |
| Spectral type | M2 |
| Variable type | Eclipsing binary + Flare star |
| Astrometry | |
| Proper motion (μ) | RA: +144.250 mas/yr Dec.: –111.210 mas/yr |
| Parallax (π) | 18.9896±0.0259 mas |
| Distance | 171.8 ± 0.2 ly (52.66 ± 0.07 pc) |
| Orbit | |
| Primary | A |
| Companion | B |
| Period (P) | 0.1926 days (4.62 hours) |
| Semi-major axis (a) | 1.33±0.03 R☉ |
| Inclination (i) | 66.89±0.45° |
| Details | |
| A | |
| Mass | 0.578±0.04 M☉ |
| Radius | 0.59±0.01 R☉ |
| Luminosity | 0.053 L☉ |
| Temperature | 3,735 K |
| B | |
| Mass | 0.28±0.02 M☉ |
| Radius | 0.27±0.01 R☉ |
| Luminosity | 0.007 L☉ |
| Temperature | 3,359±28 K |
| Other designations | |
| BX Tri, LSPM J0220+3320, GSC 02314-00530, 2MASS J02205082+3320479, NSVS 6550671 | |
| Database references | |
| SIMBAD | data |
BX Trianguli is a binary system made up of two red dwarfs, in the constellation Triangulum. Both stars eclipse each other and have an orbital period of four hours and 40 minutes. They are located at around 170 light-years from Earth based upon parallax measurements.