All names: TIC 269734797, Gaia DR3 1764138098639251456, GALEX J210305.4+172234, Gaia EDR3 1764138098639251456, SDSS J210305.43+172234.4, HS 2100+1710, HS2100+1710, UCAC4 537-137378, Gaia DR2 1764138098639251456, 2MASS J21030542+1722344
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 21 03 05.44 (0.03) | 21 03 05.34 | 21 03 05.43 (0.03) | ||
| Declination | 17 22 34.50 (0.03) | 17 22 34.74 | 17 22 34.44 (0.03) | ||
| Spectral type | sdOB | sdOB | |||
| Effective temperature | [K] | 34100.0 (900) | |||
| log(g) | [cgs] | 6.05 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.69 (0.04) | 0.74 (0.06) | 0.69 (0.04) | |
| Distance | [pc] | 1450.54 (77) | 1342.64 (112) | 1450.54 (77) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 5.598 (0.04) | 5.538 (0.1) | 5.598 (0.04) | |
| Proper motion (declination) | [mas/yr] | 3.776 (0.03) | 3.866 (0.1) | 3.776 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.24 (0.02) | ||||
| V magnitude | 15.06 (0.01) | ||||
| R magnitude | 15.61 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 15.87 (0.07) | 15.87 (0.07) | |||
| H magnitude | 16.07 (0.2) | 16.07 (0.2) | |||
| K magnitude | 15.88 | ||||
| u magnitude | 14.82 (0.005) | 14.81 (0.02) | |||
| g magnitude | 15.06 (0.004) | 15.07 (0.007) | |||
| r magnitude | 15.51 (0.005) | 15.54 (0.006) | |||
| i magnitude | 15.84 (0.005) | 15.85 (0.007) | |||
| z magnitude | 16.12 (0.008) | 16.12 (0.01) | |||
| G magnitude | 15.30 (0.003) | 15.31 (0.0007) | 15.30 (0.003) | ||
| BP magnitude | 15.18 (0.003) | 15.12 (0.008) | |||
| RP magnitude | 15.53 (0.004) | 15.53 (0.003) | |||
| Pan g magnitude | |||||
| Pan r magnitude | |||||
| Pan i magnitude | |||||
| Pan z magnitude | |||||
| Pan y magnitude | |||||
| E(B-V) | 0.096 | ||||
* 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.