All names: BPSCS22937-33, BPS CS 22937-0033, TIC 115148200, [DP70] 58, Gaia EDR3 6581816761537240704, UBV M 52978, GALEX J210731.9-400547, Gaia DR3 6581816761537240704, GSC 07969-00798, TYC 7969-798-1, GEN# +9.64030058, 2MASS J21073167-4005477, Gaia DR2 6581816761537240704, EC 21043-4017
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 07 31.69 (0.03) | 21 07 31.66 | 21 07 31.68 (0.03) | ||
| Declination | -40 05 47.89 (0.03) | -40 05 47.93 | -40 05 47.83 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 32400.0 (1100) | |||
| log(g) | [cgs] | 5.63 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.86 (0.04) | 1.93 (0.08) | 1.86 (0.04) | |
| Distance | [pc] | 538.01 (12) | 518.03 (22) | 538.01 (12) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 7.168 (0.04) | 7.126 (0.1) | 7.168 (0.04) | |
| Proper motion (declination) | [mas/yr] | -3.64 (0.04) | -3.668 (0.08) | -3.64 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 12.63 | ||||
| V magnitude | 12.85 (0.2) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 13.70 (0.02) | 13.70 (0.02) | |||
| H magnitude | 13.84 (0.04) | 13.84 (0.04) | |||
| K magnitude | 13.97 (0.05) | 13.97 (0.05) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 13.03 (0.003) | 13.06 (0.0008) | 13.03 (0.003) | ||
| BP magnitude | 12.89 (0.003) | 12.83 (0.007) | |||
| RP magnitude | 13.34 (0.004) | 13.34 (0.001) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.024 | ||||
* 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.