All names: Gaia DR3 896985094929733120, 2MASS J07284741+3551574, LAMOST J072847.41+355157.4, UCAC4 630-040429, UCAC2 44300473, TIC 18745933, Gaia DR2 896985094929733120, KUV 07255+3558, KUV07255+3558, GALEX J072847.4+355158, SDSS J072847.42+355157.4
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 07 28 47.44 | 07 28 47.42 (0.03) | ||
| Declination | 35 51 57.58 | 35 51 57.47 (0.03) | ||
| 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] | 0.00 (0.07) | 0.17 (0.04) | |
| Distance | [pc] | 434782.61 (13686200) | 6045.95 (1371) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.059 (0.1) | -1.022 (0.04) | |
| Proper motion (declination) | [mas/yr] | -2.4 (0.1) | -2.341 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.04 (0.02) | |||
| V magnitude | 15.05 (0.05) | |||
| R magnitude | 15.30 (0.09) | |||
| I magnitude | ||||
| J magnitude | 15.16 (0.05) | 15.16 (0.05) | ||
| H magnitude | 15.10 (0.1) | 15.10 (0.1) | ||
| K magnitude | 15.23 (0.2) | 15.23 (0.1) | ||
| u magnitude | 15.54 (0.004) | 15.54 (0.004) | ||
| g magnitude | 14.87 (0.003) | 14.87 (0.003) | ||
| r magnitude | 15.18 (0.004) | 15.18 (0.004) | ||
| i magnitude | 15.39 (0.004) | 15.39 (0.004) | ||
| z magnitude | 15.59 (0.006) | 15.59 (0.006) | ||
| G magnitude | 15.08 (0.0006) | 15.06 (0.003) | ||
| BP magnitude | 15.01 (0.005) | |||
| RP magnitude | 15.08 (0.005) | |||
| Pan g magnitude | 14.96 (0.002) | |||
| Pan r magnitude | 15.20 (0.003) | |||
| Pan i magnitude | 15.43 (0.001) | |||
| Pan z magnitude | 15.60 (0.004) | |||
| Pan y magnitude | 15.67 (0.005) | |||
| E(B-V) | 0.034 | |||
* 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.