All names: SDSS J084658.82+361455.6, FBS B 489, 2MASS J08465882+3614557, GALEX J084658.8+361456, UCAC4 632-044081, Gaia DR2 717837610967127424, TIC 67597529, FBS 0843+364, Gaia DR3 717837610967127424, FBS0843+364
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 08 46 58.82 | 08 46 58.82 (0.03) | ||
| Declination | 36 14 56.00 | 36 14 55.69 (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] | 0.12 (0.07) | 0.04 (0.04) | |
| Distance | [pc] | 8389.26 (4730) | 26246.72 (26660) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.057 (0.1) | -0.001 (0.04) | |
| Proper motion (declination) | [mas/yr] | -2.488 (0.1) | -2.328 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.11 (0.03) | |||
| V magnitude | 15.25 (0.09) | |||
| R magnitude | 15.39 (0.06) | |||
| I magnitude | ||||
| J magnitude | 15.41 (0.05) | 15.41 (0.05) | ||
| H magnitude | 15.71 (0.1) | 15.71 (0.1) | ||
| K magnitude | 15.50 (0.2) | 15.50 (0.2) | ||
| u magnitude | 15.45 (0.005) | 15.46 (0.01) | ||
| g magnitude | 14.99 (0.004) | 15.01 (0.02) | ||
| r magnitude | 15.34 (0.004) | 15.33 (0.02) | ||
| i magnitude | 15.59 (0.004) | 15.58 (0.02) | ||
| z magnitude | 15.80 (0.006) | 15.80 (0.02) | ||
| G magnitude | 15.22 (0.0006) | 15.20 (0.003) | ||
| BP magnitude | 15.12 (0.004) | |||
| RP magnitude | 15.30 (0.004) | |||
| Pan g magnitude | 15.08 (0.008) | |||
| Pan r magnitude | 15.38 (0.002) | |||
| Pan i magnitude | 15.64 (0.003) | |||
| Pan z magnitude | 15.84 (0.003) | |||
| Pan y magnitude | 15.93 (0.006) | |||
| E(B-V) | 0.025 | |||
* 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.