All names: Gaia EDR3 652373680785395584, GALEX J082145.7+150427, SDSS J082145.67+150427.4, SDSS J082145.67+150427.5, Gaia DR2 652373680785395584, Gaia DR3 652373680785395584
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 08 21 45.67 (0.2) | 08 21 45.68 | 08 21 45.67 (0.2) | 08 21 45.67 | 08 21 45.68 (0.2) | 08 21 45.67 | |||||
Declination | 15 04 27.39 (0.1) | 15 04 27.51 | 15 04 27.39 (0.1) | 15 04 27.39 | 15 04 27.51 (0.1) | 15 04 27.52 | |||||
Spectral type | DA | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 18278.0 | 20730.0 (1805) | 24254.0 (584) | |||||||
log(g) | [cgs] | 7.67 | 7.78 (0.1) | 7.92 (0.08) | |||||||
Mass | [M☉] | 0.452 | 0.509 (0.09) | 0.592 (0.04) | |||||||
log(Luminosity) | [L☉] | ||||||||||
Cooling age | [Gyr] | 0.0537 | |||||||||
log(H/He) | |||||||||||
log(C/He) | |||||||||||
log(Ca/He) | |||||||||||
log(Ca/H) | |||||||||||
log(C/H) | |||||||||||
log(N/H) | |||||||||||
log(O/H) | |||||||||||
log(Na/H) | |||||||||||
log(Mg/H) | |||||||||||
log(Al/H) | |||||||||||
log(Si/H) | |||||||||||
log(P/H) | |||||||||||
log(S/H) | |||||||||||
log(Sc/H) | |||||||||||
log(Ti/H) | |||||||||||
log(Cr/H) | |||||||||||
log(Mn/H) | |||||||||||
log(Fe/H) | |||||||||||
log(Ni/H) | |||||||||||
Parallax | [mas] | 2.28 (0.2) | 2.31 (0.3) | 2.28 | 2.28 (0.2) | ||||||
Distance | [pc] | 438.42 (39) | 433.51 (48) | 438.42 | 438.42 (39) | ||||||
Composition | H | ||||||||||
Proper motion (right ascension) | [mas/yr] | -4.535616337 (0.3) | -4.466905067 (0.4) | -4.536 (0.2) | |||||||
Proper motion (declination) | [mas/yr] | -7.842328307 (0.2) | -7.867948094 (0.3) | -7.842 (0.2) | |||||||
Variability | |||||||||||
Magnetic | |||||||||||
Bd | [MG] | ||||||||||
Infrared excess (disk) | |||||||||||
Binarity | |||||||||||
B magnitude | |||||||||||
V magnitude | |||||||||||
R magnitude | |||||||||||
I magnitude | |||||||||||
J magnitude | |||||||||||
H magnitude | |||||||||||
K magnitude | |||||||||||
u magnitude | 18.37 (0.02) | 18.37 (0.02) | 18.38 (0.02) | ||||||||
g magnitude | 18.42 (0.007) | 18.43 (0.007) | 18.42 (0.02) | ||||||||
r magnitude | 18.84 (0.01) | 18.84 (0.01) | 18.84 (0.01) | ||||||||
i magnitude | 19.17 (0.02) | 19.17 (0.02) | 19.18 (0.02) | ||||||||
z magnitude | 19.47 (0.07) | 19.47 (0.07) | 19.48 (0.08) | ||||||||
G magnitude | 18.65 (0.02) | 18.69 | 18.65 | 18.65 (0.003) | |||||||
BP magnitude | 18.59 (0.02) | 18.55 | |||||||||
RP magnitude | 18.78 (0.04) | 18.85 | |||||||||
Pan g magnitude | 18.47 (0.008) | ||||||||||
Pan r magnitude | 18.85 (0.006) | ||||||||||
Pan i magnitude | 19.17 (0.01) | ||||||||||
Pan z magnitude | 19.36 (0.02) | ||||||||||
Pan y magnitude | 19.48 (0.06) | ||||||||||
E(B-V) | 0.027 |
* 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.