All names: Gaia DR2 1763176163404069632, 2MASS J21003173+1452140, UCAC4 525-139487, GALEX J210031.7+145213, Gaia DR3 1763176163404069632, GALEXJ21005+1452
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 21 00 31.71 | 21 00 31.73 (0.01) | ||
| Declination | 14 52 13.76 | 14 52 14.06 (0.01) | ||
| Spectral type | sdB+F5.5IV-V | sdB+F5.5IV-V | ||
| Effective temperature | [K] | 34170.0 (2470) | ||
| log(g) | [cgs] | 5.79 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.13 (0.04) | 1.03 (0.02) | |
| Distance | [pc] | 884.49 (29) | 969.37 (15) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.538 (0.06) | -1.414 (0.01) | |
| Proper motion (declination) | [mas/yr] | -10.424 (0.06) | -10.318 (0.01) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.43 (0.03) | |||
| V magnitude | 13.22 (0.03) | |||
| R magnitude | 13.28 (0.1) | |||
| I magnitude | ||||
| J magnitude | 12.48 (0.02) | 12.48 (0.02) | ||
| H magnitude | 12.27 (0.03) | 12.27 (0.03) | ||
| K magnitude | 12.28 (0.02) | 12.28 (0.02) | ||
| u magnitude | ||||
| g magnitude | 13.26 (0.02) | |||
| r magnitude | 13.18 (0.06) | |||
| i magnitude | 13.12 (0.2) | |||
| z magnitude | ||||
| G magnitude | 13.12 (0.0004) | 13.10 (0.003) | ||
| BP magnitude | 13.23 (0.004) | |||
| RP magnitude | 12.84 (0.001) | |||
| Pan g magnitude | 13.41 | |||
| Pan r magnitude | 13.24 | |||
| Pan i magnitude | 13.23 | |||
| Pan z magnitude | 13.24 (0.001) | |||
| Pan y magnitude | 13.26 (0.002) | |||
| E(B-V) | 0.064 | |||
* 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.