All names: WDJ022228.39+283007.72, 2MASS J02222840+2830073, WD 0219+282, TIC 21097769, GALEX J022228.3+283007, Gaia DR3 130960218644587136, Gaia DR2 130960218644587136, KUV 02196+2816, Gaia EDR3 130960218644587136
| Parameter | Unit | Gaia EDR3 | Kilic et al. 2026b | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 22 28.37 (0.1) | 02 22 28.37 (0.2) | 02 22 28.37 | 02 22 28.39 (0.1) | 02 22 28.58 | |||
| Declination | 28 30 07.55 (0.09) | 28 30 07.56 (0.1) | 28 30 07.55 | 28 30 07.72 (0.09) | 28 30 02.16 | |||
| Spectral type | DA+DB | DB | DA+DB | DBA | ||||
| Effective temperature | [K] | 22901.0 (366) | 12535.0 (245) | |||||
| log(g) | [cgs] | 7.87 (0.03) | 6.92 (0.04) | |||||
| Mass | [M☉] | 0.559 (0.02) | 0.202 (0.008) | |||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | -0.48 | |||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| log(Li/He) | ||||||||
| log(Be/He) | ||||||||
| log(B/He) | ||||||||
| log(N/He) | ||||||||
| log(O/He) | ||||||||
| log(Na/He) | ||||||||
| log(Mg/He) | ||||||||
| log(Al/He) | ||||||||
| log(Si/He) | ||||||||
| log(P/He) | ||||||||
| log(S/He) | ||||||||
| log(Cl/He) | ||||||||
| log(K/He) | ||||||||
| log(Sc/He) | ||||||||
| log(Ti/He) | ||||||||
| log(V/He) | ||||||||
| log(Cr/He) | ||||||||
| log(Mn/He) | ||||||||
| log(Fe/He) | ||||||||
| log(Co/He) | ||||||||
| log(Ni/He) | ||||||||
| log(Cu/He) | ||||||||
| log(Zn/He) | ||||||||
| log(Ga/He) | ||||||||
| log(Ge/He) | ||||||||
| log(Sr/He) | ||||||||
| Parallax | [mas] | 4.39 (0.1) | 4.76 (0.2) | 4.39 | 4.39 (0.1) | |||
| Distance | [pc] | 228.01 (6) | 210.09 (9) | 228.01 | 228.01 (6) | |||
| Composition | He | |||||||
| Proper motion (right ascension) | [mas/yr] | -15.94583027 (0.1) | -15.84758507 (0.3) | -15.946 (0.1) | ||||
| Proper motion (declination) | [mas/yr] | -10.18876884 (0.1) | -10.20357432 (0.3) | -10.189 (0.1) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 17.00 | |||||||
| V magnitude | 18.16 | |||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 16.08 (0.07) | |||||||
| H magnitude | 15.59 (0.1) | |||||||
| K magnitude | 15.30 (0.1) | |||||||
| u magnitude | ||||||||
| g magnitude | ||||||||
| r magnitude | ||||||||
| i magnitude | ||||||||
| z magnitude | ||||||||
| G magnitude | 17.06 (0.01) | 17.06 | 17.06 | 17.06 (0.004) | ||||
| BP magnitude | 17.02 (0.01) | 16.99 | ||||||
| RP magnitude | 16.95 (0.01) | 16.96 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.083 | |||||||
* 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.