All names: Gaia DR3 1585063422960992256, Gaia DR2 1585063422960992256, SDSS J120331.89+645101.4, Gaia EDR3 1585063422960992256, 1200+651, GALEX J120331.8+645100, SDSS J120331.90+645101.3, J1203+6450, SDSS J120331.77+645059.5, J1203+6451, SDSS J120331.83+645100.5, SDSS J120331.89+645101.3, WDJ120331.90+645101.41, WD 1200+651
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Jewett et al. 2024 | Coutu et al. 2019 | Leggett et al. 2018 | Gaia DR2 | Stilism | Liebert et al. 2003 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 12 03 31.75 (0.07) | 12 03 31.89 | 12 03 31.90 | 12 03 31.75 (0.09) | 12 03 31.75 | 12 03 31.90 (0.07) | 12 03 31.75 | 12 03 31.89 | 12 03 30.36 | 12 03 31.89 | ||||||||
Declination | 64 50 59.17 (0.07) | 64 51 01.44 | 64 51 01.41 | 64 50 59.24 (0.09) | 64 50 59.17 | 64 51 01.41 (0.07) | 64 50 59.24 | 64 51 01.33 | 64 50 54.24 | 64 51 01.29 | ||||||||
Spectral type | DQA | DQA | DQ | DQA4.2 | DQ | DQ | DQ | hotDQ | DQhot | DQ;CI | DQ_CI | hotDQ | ||||||
Effective temperature | [K] | 12700.0 (71) | 12700.0 (71) | 12359.0 (455) | 11930.0 (275) | 14000.0 | 12229.0 (194) | 12727.0 (129) | 12877.0 (138) | |||||||||
log(g) | [cgs] | 8.83 (0.008) | 8.83 | 8.77 | 8.68 (0.04) | 8.75 (0.02) | 8.97 (0.04) | 9.98 (0.03) | ||||||||||
Mass | [M☉] | 1.107 (0.006) | 1.107 (0.006) | 1.0689 | 1.019 (0.03) | 1.061 (0.01) | ||||||||||||
log(Luminosity) | [L☉] | |||||||||||||||||
Cooling age | [Gyr] | 1.4200 (0.02) | 1.3200 | 1.2640 (0.1) | ||||||||||||||
log(H/He) | -2.0 | -2.0 | ||||||||||||||||
log(C/He) | 0.0 | -1.5894 (0.1) | ||||||||||||||||
log(Ca/He) | ||||||||||||||||||
log(Ca/H) | ||||||||||||||||||
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(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] | 11.47 (0.09) | 11.46 | 11.27 (0.4) | 11.46 (0.1) | 11.47 | 11.47 (0.09) | 11.46 (0.1) | ||||||||||
Distance | [pc] | 87.16 (0.7) | 87.28 (0.8) | 88.73 (3) | 87.28 (0.8) | 87.16 | 87.16 (0.7) | 87.28 (0.8) | ||||||||||
Composition | He | He | ||||||||||||||||
Proper motion (right ascension) | [mas/yr] | -61.9328297 (0.08) | -61.9157735 (0.2) | -61.933 (0.08) | -61.916 | -62.0 | ||||||||||||
Proper motion (declination) | [mas/yr] | -140.1480068 (0.09) | -140.2208528 (0.2) | -140.148 (0.09) | -140.221 | -141.2 | ||||||||||||
Variability | ||||||||||||||||||
Magnetic | ||||||||||||||||||
Bd | [MG] | |||||||||||||||||
Infrared excess (disk) | ||||||||||||||||||
Binarity | ||||||||||||||||||
B magnitude | ||||||||||||||||||
V magnitude | ||||||||||||||||||
R magnitude | ||||||||||||||||||
I magnitude | ||||||||||||||||||
J magnitude | ||||||||||||||||||
H magnitude | ||||||||||||||||||
K magnitude | ||||||||||||||||||
u magnitude | 17.47 (0.009) | 17.47 (0.009) | 17.43 (0.01) | 17.46 (0.02) | 17.38 | 17.45 (0.02) | ||||||||||||
g magnitude | 17.51 (0.005) | 17.50 (0.005) | 17.50 (0.005) | 17.50 (0.02) | 17.49 | 17.50 (0.02) | ||||||||||||
r magnitude | 17.77 (0.006) | 17.77 (0.006) | 17.78 (0.006) | 17.79 (0.02) | 17.77 | 17.80 (0.02) | ||||||||||||
i magnitude | 18.03 (0.008) | 18.03 (0.008) | 18.04 (0.008) | 18.02 (0.02) | 17.98 | 18.03 (0.02) | ||||||||||||
z magnitude | 18.26 (0.03) | 18.26 (0.03) | 18.24 (0.03) | 18.27 (0.03) | 18.23 | 18.28 (0.03) | ||||||||||||
G magnitude | 17.63 (0.008) | 17.66 | 17.63 | 17.63 (0.003) | 17.66 | |||||||||||||
BP magnitude | 17.60 (0.008) | 17.54 | 17.54 | |||||||||||||||
RP magnitude | 17.70 (0.01) | 17.68 | 17.68 | |||||||||||||||
Pan g magnitude | 17.56 (0.003) | |||||||||||||||||
Pan r magnitude | 17.76 (0.004) | |||||||||||||||||
Pan i magnitude | 18.05 (0.004) | |||||||||||||||||
Pan z magnitude | 18.25 (0.005) | |||||||||||||||||
Pan y magnitude | 18.39 (0.02) | |||||||||||||||||
E(B-V) | 0.006 |
* 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.