All names: Gaia DR3 599922307511771776, LP 485-12, Gaia DR2 599922307511771776, J0828+0942, LHS 5138, SDSS J082808.04+094216.7, SDSS J082808.04+094216.6, Gaia EDR3 599922307511771776, USNO-B1.0 0997-00184355, LSPM J0828+0942, PM J08281+0942, WDJ082807.86+094217.47, 08281+0942, NLTT 19582
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 08 28 08.34 (0.1) | 08 28 08.32 (0.2) | 08 28 08.34 | 08 28 07.86 (0.1) | 08 28 08.32 | ||||||||
Declination | 09 42 15.31 (0.1) | 09 42 15.38 (0.1) | 09 42 15.31 | 09 42 17.48 (0.1) | 09 42 15.38 | ||||||||
Spectral type | DC | DC | DC | DC | DC | DA: | DC | ||||||
Effective temperature | [K] | 4462.0 (38) | 4513.0 (14) | 4437.0 | 4122.0 | 5190.0 (372) | 4456.0 (70) | ||||||
log(g) | [cgs] | 7.31 (0.03) | 7.41 (0.02) | 7.32 | 7.05 | 8.00 (0) | 7.30 (0.05) | ||||||
Mass | [M☉] | 0.25 (0.01) | 0.286 (0.009) | 0.255 | 0.171 | 0.57 (0.1) | 0.247 (0.02) | ||||||
log(Luminosity) | [L☉] | -3.99 | |||||||||||
Cooling age | [Gyr] | 2.9400 | 2.6740 | 2.4190 | |||||||||
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] | 19.03 (0.2) | 19.28 (0.2) | 19.28 (0.2) | 19.03 | 19.03 (0.2) | 19.28 (0.2) | ||||||
Distance | [pc] | 52.56 (0.5) | 51.87 (0.6) | 51.87 (0.6) | 54.50 (9) | 52.56 | 52.56 (0.5) | 51.87 (0.6) | |||||
Composition | H | H | He | ||||||||||
Proper motion (right ascension) | [mas/yr] | 443.1653604 (0.2) | 443.37755 (0.4) | 443.165 (0.2) | 443.37755 | ||||||||
Proper motion (declination) | [mas/yr] | -135.2146483 (0.2) | -135.1901783 (0.2) | -135.215 (0.2) | -135.1901783 | ||||||||
Variability | |||||||||||||
Magnetic | |||||||||||||
Bd | [MG] | ||||||||||||
Infrared excess (disk) | |||||||||||||
Binarity | |||||||||||||
B magnitude | 19.00 | ||||||||||||
V magnitude | |||||||||||||
R magnitude | 17.80 | ||||||||||||
I magnitude | |||||||||||||
J magnitude | 16.76 (0.02) | ||||||||||||
H magnitude | |||||||||||||
K magnitude | |||||||||||||
u magnitude | 21.11 (0.1) | 21.08 (0.07) | 21.08 (0.07) | ||||||||||
g magnitude | 19.16 (0.01) | 19.16 (0.01) | |||||||||||
r magnitude | 18.19 (0.007) | 18.19 (0.007) | |||||||||||
i magnitude | 17.83 (0.007) | 17.83 (0.007) | |||||||||||
z magnitude | 17.64 (0.02) | 17.64 (0.02) | |||||||||||
G magnitude | 18.22 (0.03) | 18.25 | 18.22 | 18.22 (0.003) | 18.25 | ||||||||
BP magnitude | 18.90 (0.03) | 18.78 | 18.78 | ||||||||||
RP magnitude | 17.49 (0.02) | 17.51 | 17.51 | ||||||||||
Pan g magnitude | 19.02 (0.005) | 19.02 (0.005) | |||||||||||
Pan r magnitude | 18.18 (0.008) | 18.18 (0.008) | |||||||||||
Pan i magnitude | 17.85 (0.007) | 17.85 (0.007) | |||||||||||
Pan z magnitude | 17.69 (0.004) | 17.70 (0.004) | |||||||||||
Pan y magnitude | 17.64 (0.01) | 17.64 (0.009) | |||||||||||
E(B-V) | 0.001 |
* 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.