All names: BPSCS30492-40, Gaia DR3 6774437145590631808, Gaia EDR3 6774437145590631808, Gaia DR2 6774437145590631808, 2MASS J21073534-3806423, UCAC4 260-196596, TIC 115149033, EC 21044-3818, GALEX J210735.4-380642, BPS CS 30492-0040
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 07 35.34 (0.03) | 21 07 35.35 | 21 07 35.35 (0.04) | ||
| Declination | -38 06 42.83 (0.03) | -38 06 42.01 | -38 06 42.43 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.84 (0.05) | 0.86 (0.08) | 0.84 (0.05) | |
| Distance | [pc] | 1192.46 (66) | 1159.69 (104) | 1192.46 (66) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -5.432 (0.04) | -5.464 (0.1) | -5.432 (0.04) | |
| Proper motion (declination) | [mas/yr] | -24.801 (0.04) | -24.834 (0.07) | -24.801 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.62 (0.07) | ||||
| V magnitude | 14.80 (0.02) | ||||
| R magnitude | 15.02 (0.03) | ||||
| I magnitude | |||||
| J magnitude | 15.50 (0.05) | 15.50 (0.05) | |||
| H magnitude | 15.53 (0.1) | 15.53 (0.1) | |||
| K magnitude | 15.44 (0.2) | 15.44 (0.2) | |||
| u magnitude | |||||
| g magnitude | 14.64 (0.01) | ||||
| r magnitude | 15.04 (0.02) | ||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 14.80 (0.003) | 14.81 (0.0005) | 14.80 (0.003) | ||
| BP magnitude | 14.64 (0.003) | 14.58 (0.007) | |||
| RP magnitude | 15.09 (0.004) | 15.09 (0.002) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.031 | ||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.