All names: LSPM J0018+3055, Gaia EDR3 2862337802883401856, J0018+3055, WDJ001843.92+305541.37, WDJ001843.92+305541.38, 2MASS J00184390+3055412, Gaia DR3 2862337802883401856, Gaia DR2 2862337802883401856, LP 292-65, USNO-B1.0 1209-00004869, TIC 57956998, SDSS J001844.06+305541.4, SDSS J001844.06+305541.5, NLTT 949
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 00 18 44.16 (0.06) | 00 18 44.15 | 00 18 44.16 | 00 18 43.92 (0.06) | 00 18 44.15 | ||||||||
Declination | 30 55 41.52 (0.05) | 30 55 41.52 | 30 55 41.52 | 30 55 41.37 (0.05) | 30 55 41.52 | ||||||||
Spectral type | DA | DA | DA | DA | DA | ||||||||
Effective temperature | [K] | 6803.0 (31) | 6834.0 (26) | 6803.0 (31) | 6766.0 | 6516.0 | 6876.0 (53) | ||||||
log(g) | [cgs] | 7.92 (0.01) | 7.94 (0.01) | 7.93 (0.01) | 7.92 | 7.79 | 7.97 (0.01) | ||||||
Mass | [M☉] | 0.545 (0.008) | 0.554 (0.008) | 0.549 (0.009) | 0.542 | 0.454 | 0.575 (0.01) | ||||||
log(Luminosity) | [L☉] | ||||||||||||
Cooling age | [Gyr] | 1.5200 | 1.4600 | 1.4340 | |||||||||
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] | 18.47 (0.07) | 18.55 (0.1) | 18.55 (0.1) | 18.47 | 18.47 (0.07) | 18.55 (0.1) | ||||||
Distance | [pc] | 54.13 (0.2) | 53.91 (0.3) | 53.91 (0.3) | 54.13 | 54.13 (0.2) | 53.91 (0.3) | ||||||
Composition | H | H | |||||||||||
Proper motion (right ascension) | [mas/yr] | 194.9892154 (0.08) | 194.9852652 (0.2) | 194.989 (0.08) | 194.9852652 | ||||||||
Proper motion (declination) | [mas/yr] | 9.437946456 (0.07) | 9.15841902 (0.1) | 9.438 (0.07) | 9.15841902 | ||||||||
Variability | |||||||||||||
Magnetic | |||||||||||||
Bd | [MG] | ||||||||||||
Infrared excess (disk) | |||||||||||||
Binarity | |||||||||||||
B magnitude | 17.10 | ||||||||||||
V magnitude | |||||||||||||
R magnitude | 16.50 | ||||||||||||
I magnitude | |||||||||||||
J magnitude | 16.36 (0.01) | 16.36 (0.1) | |||||||||||
H magnitude | |||||||||||||
K magnitude | |||||||||||||
u magnitude | 17.88 (0.01) | 17.89 (0.01) | 17.89 (0.01) | ||||||||||
g magnitude | 17.33 (0.005) | 17.33 (0.005) | |||||||||||
r magnitude | 17.11 (0.005) | 17.11 (0.005) | |||||||||||
i magnitude | 17.04 (0.005) | 17.04 (0.005) | |||||||||||
z magnitude | 17.05 (0.01) | 17.05 (0.01) | |||||||||||
G magnitude | 17.13 (0.008) | 17.13 | 17.13 | 17.13 (0.003) | 17.13 | ||||||||
BP magnitude | 17.32 (0.008) | 17.31 | 17.31 | ||||||||||
RP magnitude | 16.79 (0.01) | 16.74 | 16.74 | ||||||||||
Pan g magnitude | 17.31 (0.003) | 17.31 (0.003) | |||||||||||
Pan r magnitude | 17.12 (0.003) | 17.12 (0.002) | |||||||||||
Pan i magnitude | 17.07 (0.004) | 17.07 (0.005) | |||||||||||
Pan z magnitude | 17.10 (0.006) | 17.10 (0.006) | |||||||||||
Pan y magnitude | 17.12 (0.01) | 17.12 (0.01) | |||||||||||
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.