All names: SDSS J102844.63+253018.3, Gaia DR2 727435316684008832, 2MASS J10284463+2530184, LAMOST J102844.62+253019.0, GALEX J102844.6+253018, SDSSJ102844.63+253018.3, LAMOST J102844.63+253018.3, WD 1025+257, PG 1025+258, Ton 518, TIC 165298197, Gaia DR3 727435316684008832
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 10 28 44.63 | 10 28 44.63 (0.04) | ||
| Declination | 25 30 18.30 | 25 30 18.39 (0.03) | ||
| Spectral type | sdO+MS | sdO7He2+F/K | ||
| 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] | 0.46 (0.07) | 0.34 (0.04) | |
| Distance | [pc] | 2153.78 (316) | 2966.48 (386) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.685 (0.1) | -1.646 (0.04) | |
| Proper motion (declination) | [mas/yr] | -5.287 (0.1) | -5.306 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.95 | |||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.72 (0.05) | 15.72 (0.05) | ||
| H magnitude | 15.37 (0.07) | 15.37 (0.07) | ||
| K magnitude | 15.56 (0.2) | 15.56 (0.2) | ||
| u magnitude | 16.14 (0.006) | 16.14 (0.006) | ||
| g magnitude | 16.18 (0.004) | 16.18 (0.004) | ||
| r magnitude | 16.33 (0.004) | 16.33 (0.004) | ||
| i magnitude | 16.38 (0.005) | 16.38 (0.005) | ||
| z magnitude | 16.44 (0.008) | 16.44 (0.008) | ||
| G magnitude | 16.21 (0.001) | 16.19 (0.003) | ||
| BP magnitude | 16.20 (0.01) | |||
| RP magnitude | 16.07 (0.004) | |||
| Pan g magnitude | 16.22 (0.005) | |||
| Pan r magnitude | 16.32 (0.003) | |||
| Pan i magnitude | 16.39 (0.002) | |||
| Pan z magnitude | 16.46 (0.002) | |||
| Pan y magnitude | 16.52 (0.008) | |||
| E(B-V) | 0.020 | |||
* 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.