All names: Gaia DR3 1033884321334910080, SDSS J082456.37+553243.9, SDSS J082456.39+553244.2, GALEX J082456.4+553244, Gaia EDR3 1033884321334910080, SDSS J082456.37+553243.98, Gaia DR2 1033884321334910080
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kepler et al. 2016 | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 08 24 56.36 (0.2) | 08 24 56.39 | 08 24 56.36 (0.3) | 08 24 56.36 | 08 24 56.40 (0.2) | |||||||
Declination | 55 32 43.82 (0.2) | 55 32 44.23 | 55 32 43.84 (0.2) | 55 32 43.82 | 55 32 44.35 (0.2) | |||||||
Spectral type | DC | DC | DC | DC | DC | DC | ||||||
Effective temperature | [K] | 9841.0 | 9858.0 | 10735.0 (218) | 9175.0 (569) | |||||||
log(g) | [cgs] | 8.03 | 7.97 | 8.00 (0) | 7.86 (0.1) | |||||||
Mass | [M☉] | 0.619 | 0.562 | 0.498 (0.1) | ||||||||
log(Luminosity) | [L☉] | |||||||||||
Cooling age | [Gyr] | 0.6576 | 0.6205 | |||||||||
log(H/He) | ||||||||||||
log(C/He) | ||||||||||||
log(Ca/He) | ||||||||||||
log(Ca/H) | ||||||||||||
Parallax | [mas] | 4.24 (0.3) | 3.94 (0.4) | 4.24 | 4.24 (0.3) | |||||||
Distance | [pc] | 235.79 (15) | 253.63 (25) | 235.79 | 235.79 (15) | |||||||
Composition | ||||||||||||
Proper motion (right ascension) | [mas/yr] | -23.13570518 (0.3) | -23.85625496 (0.5) | -23.136 (0.3) | ||||||||
Proper motion (declination) | [mas/yr] | -32.96554652 (0.2) | -32.98253226 (0.5) | -32.966 (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 | 19.42 (0.03) | 19.41 (0.03) | 19.43 (0.03) | |||||||||
g magnitude | 19.27 (0.01) | 19.30 (0.02) | 19.28 (0.01) | |||||||||
r magnitude | 19.34 (0.01) | 19.35 (0.02) | 19.34 (0.01) | |||||||||
i magnitude | 19.50 (0.02) | 19.51 (0.03) | 19.50 (0.02) | |||||||||
z magnitude | 19.56 (0.08) | 19.55 (0.08) | 19.56 (0.08) | |||||||||
G magnitude | 19.29 (0.03) | 19.33 | 19.29 | 19.29 (0.004) | ||||||||
BP magnitude | 19.36 (0.03) | 19.36 | ||||||||||
RP magnitude | 19.20 (0.05) | 19.20 | ||||||||||
Pan g magnitude | 19.29 (0.008) | |||||||||||
Pan r magnitude | 19.38 (0.01) | |||||||||||
Pan i magnitude | 19.52 (0.01) | |||||||||||
Pan z magnitude | 19.65 (0.04) | |||||||||||
Pan y magnitude | 19.72 (0.1) | |||||||||||
E(B-V) | 0.015 |
* 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.