All names: 2MASS J03020457+3943012, FBS B 30, Gaia DR3 143711053130199936, FBS0258+395, TIC 186625867, Gaia DR2 143711053130199936, FBS 0258+395
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 03 02 04.66 | 03 02 04.58 (0.02) | ||
| Declination | 39 43 01.90 | 39 43 01.29 (0.02) | ||
| Spectral type | sd | 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] | 0.02 (0.07) | 0.12 (0.02) | |
| Distance | [pc] | 64516.13 (278044) | 8136.70 (1615) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.14 (0.1) | -1.318 (0.03) | |
| Proper motion (declination) | [mas/yr] | -2.338 (0.07) | -2.283 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 13.83 (0.03) | 13.83 (0.03) | ||
| H magnitude | 13.92 (0.04) | 13.92 (0.04) | ||
| K magnitude | 13.89 (0.04) | 13.89 (0.04) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 13.62 (0.0007) | 13.60 (0.003) | ||
| BP magnitude | 13.54 (0.009) | |||
| RP magnitude | 13.69 (0.003) | |||
| Pan g magnitude | 13.41 | |||
| Pan r magnitude | 13.78 (0.003) | |||
| Pan i magnitude | 14.06 (0.007) | |||
| Pan z magnitude | 14.24 (0.007) | |||
| Pan y magnitude | 14.35 (0.001) | |||
| E(B-V) | 0.097 | |||
* 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.