Gaia DR2 1218104543928648832

All names: WDJ154443.41+234051.16, SDSS J154443.38+234050.9, Gaia DR2 1218104543928648832, SDSS J154443.39+234050.9, Gaia DR3 1218104543928648832, Gaia EDR3 1218104543928648832

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 15 44 43.33 (0.09) 15 44 43.33 15 44 43.33 15 44 43.41 (0.09) 15 44 43.33
Declination 23 40 50.19 (0.1) 23 40 50.22 23 40 50.19 23 40 51.17 (0.1) 23 40 50.22
Spectral type DC DA: D
Effective temperature [K] 5725.0 (54) 6415.0 6182.0 6517.0 (95)
log(g) [cgs] 7.95 (0.02) 8.27 8.15 8.29 (0.03)
Mass [M] 0.539 (0.02) 0.761 0.667 0.777 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 3.4360 3.2290
log(H/He)
log(C/He)
log(Ca/He)
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] 13.77 (0.1) 13.90 (0.2) 13.77 13.77 (0.1) 13.90 (0.2)
Distance [pc] 72.65 (0.8) 71.93 (0.9) 72.65 72.65 (0.8) 71.93 (0.9)
Composition He
Proper motion (right ascension) [mas/yr] -63.27746416 (0.1) -63.44608349 (0.3) -63.277 (0.1) -63.44608349
Proper motion (declination) [mas/yr] -61.28061386 (0.1) -61.09850871 (0.3) -61.281 (0.1) -61.09850871
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.82 (0.04) 19.86 (0.06)
g magnitude 18.75 (0.008) 18.76 (0.01)
r magnitude 18.42 (0.008) 18.41 (0.01)
i magnitude 18.30 (0.009) 18.35 (0.01)
z magnitude 18.33 (0.03) 18.34 (0.03)
G magnitude 18.43 (0.02) 18.45 18.43 18.43 (0.003) 18.45
BP magnitude 18.70 (0.02) 18.70 18.70
RP magnitude 18.05 (0.02) 17.99 17.99
Pan g magnitude 18.70 (0.01)
Pan r magnitude 18.42 (0.008)
Pan i magnitude 18.35 (0.007)
Pan z magnitude 18.38 (0.01)
Pan y magnitude 18.39 (0.03)
E(B-V) 0.014

* Constant surface field

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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.