All names: Gaia DR3 1539286218411128192, FBS1208+450, GALEX J121109.1+444802, USNO-A2.0 1275-08047072, FBS B 304, TIC 458426797, CHSS 2185, FBS 1208+450, 2MASS J12110922+4448025, Gaia DR2 1539286218411128192
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 12 11 09.16 | 12 11 09.22 (0.02) | ||
| Declination | 44 48 04.00 | 44 48 02.57 (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] | 0.15 (0.05) | 0.15 (0.03) | |
| Distance | [pc] | 6480.88 (2121) | 6485.08 (1333) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.611 (0.04) | -2.755 (0.02) | |
| Proper motion (declination) | [mas/yr] | -9.079 (0.07) | -8.996 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.71 | |||
| V magnitude | 14.61 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.64 (0.03) | 14.64 (0.03) | ||
| H magnitude | 14.70 (0.06) | 14.70 (0.06) | ||
| K magnitude | 14.63 (0.08) | 14.63 (0.08) | ||
| u magnitude | 14.90 (0.004) | |||
| g magnitude | 14.27 (0.003) | |||
| r magnitude | 14.59 (0.003) | |||
| i magnitude | 14.87 (0.003) | |||
| z magnitude | 15.00 (0.005) | |||
| G magnitude | 14.47 (0.0004) | 14.45 (0.003) | ||
| BP magnitude | 14.39 (0.004) | |||
| RP magnitude | 14.52 (0.002) | |||
| Pan g magnitude | 14.35 (0.004) | |||
| Pan r magnitude | 14.61 (0.002) | |||
| Pan i magnitude | 14.87 (0.003) | |||
| Pan z magnitude | 15.04 (0.001) | |||
| Pan y magnitude | 15.10 (0.004) | |||
| E(B-V) | 0.016 | |||
* 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.