All names: WD 0251+007, CRTS J025403.7+005855, Gaia EDR3 2498367529597482496, SDSS J025403.75+005854.4, Gaia DR2 2498367529597482496, SDSS J025403.76+005854.3, [HH86] 0251+007, KUV 02515+0047, SDSS J025403.76+005854.1, HBQS 0251+0046, PTF1 J025403.75+005854.2, GALEX J025403.7+005854, PB 6922, [LCB92] 0251+0046, Gaia DR3 2498367529597482496, LB 2828, SDSS J025403.75+005854.5, US 3310, SDSS J025403.75+005854.1, SDSS J025403.75+005854.2
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Hugelmeyer et al. 2006 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 02 54 03.76 (0.09) | 02 54 03.76 | 02 54 03.76 (0.1) | 02 54 03.75 (0.09) | 02 54 03.75 | 02 54 02.45 | 02 54 03.75 | |||||||
Declination | 00 58 54.13 (0.09) | 00 58 54.19 | 00 58 54.13 (0.1) | 00 58 54.22 (0.09) | 00 58 54.22 | 00 58 52.68 | 00 58 54.38 | |||||||
Spectral type | DO | DO | DO | DO | DO | DO | DO | DO | ||||||
Effective temperature | [K] | 22425.0 | 27850.0 | 80000.0 (500) | 100000.0 (794) | 100000.0 (198) | ||||||||
log(g) | [cgs] | 6.57 | 6.79 | 8.00 (0.06) | 5.00 (0.01) | 7.21 (0.1) | ||||||||
Mass | [M☉] | 0.194 | 0.239 | 0.68 | ||||||||||
log(Luminosity) | [L☉] | |||||||||||||
Cooling age | [Gyr] | |||||||||||||
log(H/He) | ||||||||||||||
log(C/He) | ||||||||||||||
log(Ca/He) | ||||||||||||||
log(Ca/H) | ||||||||||||||
Parallax | [mas] | 1.33 (0.1) | 1.42 (0.2) | 1.33 (0.1) | ||||||||||
Distance | [pc] | 751.36 (67) | 706.23 (102) | 751.37 (67) | ||||||||||
Composition | ||||||||||||||
Proper motion (right ascension) | [mas/yr] | 7.192177439 (0.1) | 7.176706026 (0.2) | 7.192 (0.1) | 6.5 | |||||||||
Proper motion (declination) | [mas/yr] | -5.866155399 (0.1) | -5.870423765 (0.2) | -5.866 (0.1) | -3.8 | |||||||||
Variability | ||||||||||||||
Magnetic | ||||||||||||||
Bd | [MG] | |||||||||||||
Infrared excess (disk) | ||||||||||||||
Binarity | ||||||||||||||
B magnitude | 17.50 | |||||||||||||
V magnitude | 17.39 | |||||||||||||
R magnitude | ||||||||||||||
I magnitude | ||||||||||||||
J magnitude | 18.38 (0.08) | |||||||||||||
H magnitude | 18.40 (0.1) | |||||||||||||
K magnitude | ||||||||||||||
u magnitude | 16.66 (0.007) | 16.66 (0.007) | 16.53 (0.01) | 16.53 | 16.57 (0.01) | |||||||||
g magnitude | 17.08 (0.005) | 17.09 (0.005) | 17.01 (0.03) | 17.02 | 17.04 (0.03) | |||||||||
r magnitude | 17.61 (0.006) | 17.61 (0.006) | 17.51 (0.01) | 17.52 | 17.53 (0.02) | |||||||||
i magnitude | 17.95 (0.007) | 17.95 (0.007) | 17.89 (0.02) | 17.89 | 17.89 (0.02) | |||||||||
z magnitude | 18.27 (0.02) | 18.27 (0.02) | 18.14 (0.03) | 18.14 | 18.14 (0.03) | |||||||||
G magnitude | 17.41 (0.03) | 17.40 | 17.41 (0.009) | |||||||||||
BP magnitude | 17.25 (0.03) | 17.14 | ||||||||||||
RP magnitude | 17.73 (0.04) | 17.65 | ||||||||||||
Pan g magnitude | 17.34 (0.01) | |||||||||||||
Pan r magnitude | 17.77 (0.02) | |||||||||||||
Pan i magnitude | 18.17 (0.008) | |||||||||||||
Pan z magnitude | 18.27 (0.02) | |||||||||||||
Pan y magnitude | 18.53 (0.02) | |||||||||||||
E(B-V) | 0.039 |
* 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.