All names: TIC 250316296, Gaia DR3 2653065864983035392, SDSS J223955.58-005240.1, SDSS J223955.59-005240.1, Gaia EDR3 2653065864983035392, GALEX J223955.5-005240, SDSSJ223955.58-005240.1, Gaia DR2 2653065864983035392, LAMOST J223955.58-005240.1, PHL 364, 2MASS J22395558-0052400
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 39 55.59 (0.03) | 22 39 55.59 | 22 39 55.59 | 22 39 55.59 (0.05) | 22 39 55.59 (0.03) | 22 39 55.59 | |||
| Declination | -00 52 40.29 (0.03) | -00 52 40.14 | -00 52 40.15 | -00 52 40.29 (0.04) | -00 52 40.11 (0.03) | -00 52 40.12 | |||
| Spectral type | He-sdO | sdO | SDO | ||||||
| Effective temperature | [K] | 44848.0 (190) | 12698.0 (38) | ||||||
| log(g) | [cgs] | 5.93 (0.05) | 7.00 (0.007) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.53 (0.04) | 0.49 (0.07) | 0.49 (0.07) | 0.53 (0.04) | ||||
| Distance | [pc] | 1893.63 (138) | 2047.92 (279) | 2048.08 (279) | 1893.58 (138) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 3.209018777 (0.04) | 3.18 (0.09) | 3.180458163 (0.09) | 3.209 (0.04) | -0.5 | |||
| Proper motion (declination) | [mas/yr] | -11.39745357 (0.04) | -11.296 (0.08) | -11.2961723 (0.08) | -11.397 (0.04) | -13.6 | |||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 14.80 | ||||||||
| V magnitude | 15.00 | ||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 15.05 (0.04) | 15.05 (0.04) | |||||||
| H magnitude | 14.75 (0.07) | 14.75 (0.07) | |||||||
| K magnitude | 14.62 (0.09) | 14.62 (0.09) | |||||||
| u magnitude | 14.64 (0.004) | 14.64 (0.004) | 14.64 (0.004) | 14.63 (0.02) | |||||
| g magnitude | 14.91 (0.003) | 14.91 (0.003) | 14.91 (0.003) | 14.94 (0.03) | |||||
| r magnitude | 15.25 (0.004) | 15.25 (0.004) | 15.25 (0.004) | 15.25 (0.01) | |||||
| i magnitude | 15.44 (0.004) | 15.44 (0.004) | 15.44 (0.004) | 15.45 (0.02) | |||||
| z magnitude | 15.61 (0.006) | 15.61 (0.006) | 15.61 (0.006) | 15.62 (0.01) | |||||
| G magnitude | 15.05 (0.002) | 15.07 (0.001) | 15.07 | 15.05 (0.003) | |||||
| BP magnitude | 14.99 (0.002) | 14.94 (0.01) | 14.94 | ||||||
| RP magnitude | 15.12 (0.003) | 15.13 (0.003) | 15.13 | ||||||
| Pan g magnitude | 14.99 (0.004) | 14.99 (0.004) | |||||||
| Pan r magnitude | 15.26 (0.003) | 15.26 (0.003) | |||||||
| Pan i magnitude | 15.48 (0.003) | 15.48 (0.003) | |||||||
| Pan z magnitude | 15.62 (0.002) | 15.62 (0.002) | |||||||
| Pan y magnitude | 15.71 (0.005) | 15.71 (0.005) | |||||||
| E(B-V) | 0.055 | ||||||||
* 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.