All names: LAMOST J213800.82+044211.7, TIC 353102531, UCAC4 474-123420, PG2135+045, 2MASS J21380082+0442116, UCAC2 33495815, PG 2135+045, Gaia DR2 2698543280816056448, Gaia DR3 2698543280816056448, GALEX J213800.8+044213
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 38 00.85 | 21 38 00.83 (0.02) | ||
| Declination | 04 42 12.30 | 04 42 11.74 (0.02) | ||
| 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] | 0.31 (0.04) | 0.33 (0.03) | |
| Distance | [pc] | 3236.25 (452) | 3065.60 (274) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.827 (0.08) | -2.678 (0.03) | |
| Proper motion (declination) | [mas/yr] | -6.155 (0.07) | -6.569 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.57 (0.02) | |||
| V magnitude | 14.48 (0.01) | |||
| R magnitude | 14.85 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.49 (0.03) | 14.49 (0.03) | ||
| H magnitude | 14.37 (0.06) | 14.37 (0.06) | ||
| K magnitude | 14.31 (0.07) | 14.31 (0.07) | ||
| u magnitude | 14.43 (0.003) | |||
| g magnitude | 14.48 (0.003) | |||
| r magnitude | 14.72 (0.003) | |||
| i magnitude | 14.86 (0.003) | |||
| z magnitude | 15.01 (0.005) | |||
| G magnitude | 14.61 (0.0007) | 14.59 (0.003) | ||
| BP magnitude | 14.54 (0.007) | |||
| RP magnitude | 14.59 (0.002) | |||
| Pan g magnitude | 14.57 (0.005) | |||
| Pan r magnitude | 14.77 (0.004) | |||
| Pan i magnitude | 14.93 (0.001) | |||
| Pan z magnitude | 15.06 (0.002) | |||
| Pan y magnitude | 15.12 (0.004) | |||
| E(B-V) | 0.048 | |||
* 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.