All names: LAMOST J093208.23+264754.3, SDSS J093208.18+264754.5, Gaia EDR3 646227999196605056, Ton 431, PG 0929+270, SDSS J093208.17+264754.6, USNO-B1.0 1167-00179244, WD 0929+270, Gaia DR2 646227999196605056, Gaia DR3 646227999196605056, GALEX J093208.2+264754
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Guo et al. 2015 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 32 08.17 (0.07) | 09 32 08.17 (0.1) | 09 32 08.17 | 09 32 08.19 (0.07) | 09 32 08.30 | ||||
| Declination | 26 47 54.45 (0.06) | 26 47 54.46 (0.1) | 26 47 54.45 | 26 47 54.66 (0.06) | 26 47 55.32 | ||||
| Spectral type | DBO? | DO | DO | DO | |||||
| Effective temperature | [K] | 67095.0 (7566) | |||||||
| log(g) | [cgs] | 7.98 (0.05) | |||||||
| Mass | [M☉] | 0.663 (0.03) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 2.94 (0.08) | 2.74 (0.2) | 2.94 | 2.94 (0.08) | ||||
| Distance | [pc] | 339.88 (9) | 365.13 (21) | 339.88 | 339.88 (9) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -17.7787117 (0.08) | -17.74776784 (0.2) | -17.779 (0.08) | |||||
| Proper motion (declination) | [mas/yr] | -12.93710404 (0.06) | -13.20009976 (0.2) | -12.937 (0.07) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.50 | ||||||||
| V magnitude | 16.51 | ||||||||
| R magnitude | 16.50 | ||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 15.72 (0.005) | ||||||||
| g magnitude | 16.17 (0.004) | ||||||||
| r magnitude | 16.71 (0.004) | ||||||||
| i magnitude | 17.07 (0.006) | ||||||||
| z magnitude | 17.41 (0.01) | ||||||||
| G magnitude | 16.47 (0.003) | 16.50 | 16.47 | 16.47 (0.003) | |||||
| BP magnitude | 16.29 (0.003) | 16.20 | |||||||
| RP magnitude | 16.80 (0.005) | 16.79 | |||||||
| Pan g magnitude | 16.29 (0.003) | ||||||||
| Pan r magnitude | 16.75 (0.003) | ||||||||
| Pan i magnitude | 17.13 (0.005) | ||||||||
| Pan z magnitude | 17.42 (0.004) | ||||||||
| Pan y magnitude | 17.61 (0.01) | ||||||||
| E(B-V) | 0.022 | ||||||||
* 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.