All names: SDSS J120319.77+243955.7, J1203+2439, 12033+2439, SDSS J120319.78+243955.7, WIRED J120319.77+243955.7, Gaia DR2 4002914643768684288, GALEX J120319.7+243955, Gaia DR3 4002914643768684288, SDSS J120319.78+243955.70, PM J12033+2439, Gaia EDR3 4002914643768684288, SDSS J120319.76+243955.6
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | Coutu et al. 2019 | Gaia DR2 | Stilism | Koester & Kepler 2015 | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 12 03 19.68 (0.06) | 12 03 19.77 | 12 03 19.81 | 12 03 19.68 (0.08) | 12 03 19.68 | 12 03 19.81 (0.06) | 12 03 19.78 | ||||||||
Declination | 24 39 55.75 (0.05) | 24 39 55.74 | 24 39 55.65 | 24 39 55.75 (0.06) | 24 39 55.75 | 24 39 55.65 (0.05) | 24 39 55.74 | ||||||||
Spectral type | DBZA | DB | DB | DBAZ | DBAZ | DB | |||||||||
Effective temperature | [K] | 15300.0 | 14397.0 | 13959.0 (1027) | 14141.0 (43) | 13810.0 (255) | 14471.0 (308) | 14916.0 (79) | |||||||
log(g) | [cgs] | 8.60 | 8.23 | 8.17 | 8.00 (0) | 8.08 (0.1) | 8.22 (0.02) | 8.74 (0.05) | |||||||
Mass | [M☉] | 0.969 | 0.728 | 0.6896 | 0.64 (0.09) | 0.722 (0.02) | |||||||||
log(Luminosity) | [L☉] | -2.33 | |||||||||||||
Cooling age | [Gyr] | 0.3290 | |||||||||||||
log(H/He) | -4.912 | -5.2004 (0.07) | -5.03 (0.1) | ||||||||||||
log(C/He) | |||||||||||||||
log(Ca/He) | -9.405 (0.2) | <-8.86 | |||||||||||||
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] | 10.07 (0.07) | 10.08 | 10.08 (0.1) | 10.07 | 10.07 (0.07) | |||||||||
Distance | [pc] | 99.26 (0.7) | 99.24 (1) | 99.24 (1) | 112.00 | 104.40 (3) | 99.26 | 99.26 (0.7) | |||||||
Composition | He | He | |||||||||||||
Proper motion (right ascension) | [mas/yr] | -114.5144704 (0.07) | -114.521856 (0.2) | -109.0 | -114.514 (0.07) | ||||||||||
Proper motion (declination) | [mas/yr] | 6.211699629 (0.05) | 6.305499747 (0.1) | 12.0 | 6.212 (0.06) | ||||||||||
Variability | |||||||||||||||
Magnetic | |||||||||||||||
Bd | [MG] | ||||||||||||||
Infrared excess (disk) | |||||||||||||||
Binarity | |||||||||||||||
B magnitude | |||||||||||||||
V magnitude | |||||||||||||||
R magnitude | |||||||||||||||
I magnitude | |||||||||||||||
J magnitude | |||||||||||||||
H magnitude | |||||||||||||||
K magnitude | 17.42 (0.1) | ||||||||||||||
u magnitude | 16.49 (0.007) | 16.50 | 16.49 (0.007) | 16.50 (0.02) | |||||||||||
g magnitude | 16.54 (0.004) | 16.54 | 16.54 (0.004) | 16.55 (0.02) | |||||||||||
r magnitude | 16.83 (0.005) | 16.83 | 16.83 (0.005) | 16.82 (0.02) | |||||||||||
i magnitude | 17.04 (0.006) | 17.05 | 17.04 (0.006) | 17.05 (0.02) | |||||||||||
z magnitude | 17.31 (0.01) | 17.31 | 17.31 (0.01) | 17.32 (0.02) | |||||||||||
G magnitude | 16.70 (0.006) | 16.75 | 16.70 | 16.70 (0.003) | |||||||||||
BP magnitude | 16.63 (0.006) | ||||||||||||||
RP magnitude | 16.74 (0.008) | ||||||||||||||
Pan g magnitude | 16.60 (0.003) | ||||||||||||||
Pan r magnitude | 16.84 (0.002) | ||||||||||||||
Pan i magnitude | 17.07 (0.006) | ||||||||||||||
Pan z magnitude | 17.29 (0.005) | ||||||||||||||
Pan y magnitude | 17.44 (0.009) | ||||||||||||||
E(B-V) | 0.003 |
* 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.