All names: Gaia DR3 1758993857393963776, Gaia DR2 1758993857393963776, GALEX J210929.3+131646, UCAC4 517-133353, TIC 125999317, 2MASS J21092939+1316462, LAMOST J210929.38+131646.2, LAMOSTJ210929.38+131646.2
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 09 29.38 | 21 09 29.38 (0.03) | ||
| Declination | 13 16 46.29 | 13 16 46.31 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 25773.0 (409) | ||
| log(g) | [cgs] | 5.50 (0.06) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.77 (0.07) | 0.74 (0.04) | |
| Distance | [pc] | 1306.51 (124) | 1347.16 (69) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.956 (0.1) | -3.027 (0.03) | |
| Proper motion (declination) | [mas/yr] | -5.903 (0.1) | -5.931 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.25 (0.03) | |||
| V magnitude | 15.17 (0.02) | |||
| R magnitude | 15.80 (0.02) | |||
| I magnitude | ||||
| J magnitude | 15.75 (0.07) | 15.75 (0.07) | ||
| H magnitude | 15.77 (0.2) | 15.77 (0.2) | ||
| K magnitude | 15.02 | |||
| u magnitude | ||||
| g magnitude | 15.13 (0.02) | |||
| r magnitude | 15.23 (0.03) | |||
| i magnitude | 15.31 (0.06) | |||
| z magnitude | ||||
| G magnitude | 15.42 (0.0007) | 15.40 (0.003) | ||
| BP magnitude | 15.29 (0.005) | |||
| RP magnitude | 15.55 (0.003) | |||
| Pan g magnitude | 15.27 (0.004) | |||
| Pan r magnitude | 15.60 (0.003) | |||
| Pan i magnitude | 15.87 (0.002) | |||
| Pan z magnitude | 16.11 (0.002) | |||
| Pan y magnitude | 16.25 (0.004) | |||
| E(B-V) | 0.063 | |||
* 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.