All names: Gaia DR3 419587969475052160, TIC 320039694, KPD 0025+5402, KPD0025+5402, UCAC4 722-004538, Gaia DR2 419587969475052160, 2MASS J00282897+5419150
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 00 28 29.03 | 00 28 28.97 (0.01) | ||
| Declination | 54 19 15.00 | 54 19 15.03 (0.02) | ||
| Spectral type | sdB+WD | sdB | ||
| Effective temperature | [K] | 28200.0 (900) | ||
| log(g) | [cgs] | 5.37 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.39 (0.04) | 1.30 (0.03) | |
| Distance | [pc] | 717.51 (19) | 768.23 (16) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.03 (0.04) | -2.888 (0.02) | |
| Proper motion (declination) | [mas/yr] | -11.284 (0.04) | -11.414 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.76 (0.03) | |||
| V magnitude | 13.91 (0.02) | |||
| R magnitude | 14.09 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.26 (0.03) | 14.26 (0.03) | ||
| H magnitude | 14.36 (0.05) | 14.36 (0.05) | ||
| K magnitude | 14.45 (0.07) | 14.45 (0.07) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 13.90 (0.0004) | 13.88 (0.003) | ||
| BP magnitude | 13.76 (0.004) | |||
| RP magnitude | 14.03 (0.002) | |||
| Pan g magnitude | 13.77 (0.004) | |||
| Pan r magnitude | 14.08 (0.0008) | |||
| Pan i magnitude | 14.37 (0.002) | |||
| Pan z magnitude | 14.60 (0.002) | |||
| Pan y magnitude | 14.73 (0.004) | |||
| E(B-V) | 0.106 | |||
* 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.