All names: GALEX J025348.7+190958, PG0250+189, USNO-B1.0 1091-00032510, Gaia DR3 84006403509432192, Gaia DR2 84006403509432192, [TFW97] J025348.78+190959.07, 2MASS J02534878+1909590, PG 0250+189, WISE J025348.78+190958.8, TIC 371468731, SDSS J025348.78+190958.9, WISEA J025348.78+190958.7, UCAC2 38556219, CHSS 3480, UCAC4 546-005498
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 02 53 48.79 | 02 53 48.78 (0.03) | ||
| Declination | 19 10 00.15 | 19 09 59.05 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 26100.0 (1500) | ||
| log(g) | [cgs] | 5.81 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.96 (0.05) | 1.93 (0.03) | |
| Distance | [pc] | 510.62 (13) | 517.52 (8) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.736 (0.09) | -2.806 (0.03) | |
| Proper motion (declination) | [mas/yr] | -19.687 (0.07) | -19.589 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.10 | |||
| V magnitude | ||||
| R magnitude | 14.52 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.12 (0.03) | 14.12 (0.03) | ||
| H magnitude | 14.06 (0.04) | 14.06 (0.04) | ||
| K magnitude | 13.97 (0.05) | 13.97 (0.05) | ||
| u magnitude | 14.10 (0.004) | |||
| g magnitude | 14.37 (0.008) | |||
| r magnitude | 14.23 (0.004) | |||
| i magnitude | 14.45 (0.004) | |||
| z magnitude | 14.64 (0.004) | |||
| G magnitude | 14.11 (0.0006) | 14.09 (0.003) | ||
| BP magnitude | 14.03 (0.008) | |||
| RP magnitude | 14.14 (0.002) | |||
| Pan g magnitude | 14.01 (0.003) | |||
| Pan r magnitude | 14.26 (0.0007) | |||
| Pan i magnitude | 14.48 (0.005) | |||
| Pan z magnitude | 14.65 (0.0006) | |||
| Pan y magnitude | 14.74 (0.003) | |||
| E(B-V) | 0.103 | |||
* 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.