All names: TIC 159843438, BPS CS 30492-0118, Gaia DR2 6582341469102003968, GALEX J212139.4-401336, EC 21184-4026, Gaia DR3 6582341469102003968, 2MASS J21213942-4013359, UCAC4 249-181536, Gaia EDR3 6582341469102003968, BPSCS22937-82, BPS CS 22937-0082
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 21 39.40 (0.03) | 21 21 39.43 | 21 21 39.41 (0.03) | ||
| Declination | -40 13 35.99 (0.02) | -40 13 36.27 | -40 13 35.98 (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] | 0.95 (0.04) | 1.01 (0.07) | 0.95 (0.04) | |
| Distance | [pc] | 1051.86 (40) | 993.54 (64) | 1051.86 (40) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -8.59 (0.03) | -8.707 (0.09) | -8.59 (0.03) | |
| Proper motion (declination) | [mas/yr] | -0.421 (0.03) | -0.51 (0.09) | -0.421 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.49 (0.02) | ||||
| V magnitude | 14.70 (0.02) | ||||
| R magnitude | 14.95 (0.07) | ||||
| I magnitude | |||||
| J magnitude | 15.29 (0.05) | 15.29 (0.05) | |||
| H magnitude | 15.39 (0.09) | 15.39 (0.09) | |||
| K magnitude | 15.54 (0.2) | 15.54 (0.2) | |||
| u magnitude | |||||
| g magnitude | 14.51 (0.01) | ||||
| r magnitude | 14.91 (0.02) | ||||
| i magnitude | 15.18 (0.02) | ||||
| z magnitude | |||||
| G magnitude | 14.66 (0.003) | 14.68 (0.0005) | 14.66 (0.003) | ||
| BP magnitude | 14.54 (0.003) | 14.50 (0.005) | |||
| RP magnitude | 14.89 (0.004) | 14.89 (0.002) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.021 | ||||
* 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.