Gaia DR2 4425202936481819520

All names: SDSS J155403.07+040113.4, Gaia DR3 4425202936481819520, SDSS J155403.08+040113.5, J1554+0401, WDJ15543.09+040113.66, Gaia EDR3 4425202936481819520, WDJ155403.09+040113.67, Gaia DR2 4425202936481819520

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 15 54 03.04 (0.2) 15 54 03.04 15 54 03.04 15 54 03.09 (0.2) 15 54 03.04
Declination 04 01 12.75 (0.2) 04 01 12.77 04 01 12.75 04 01 13.66 (0.2) 04 01 12.77
Spectral type DA DA DA DA DA
Effective temperature [K] 7142.0 (77) 7264.0 (78) 7142.0 (77) 7178.0 6946.0 7090.0 (207)
log(g) [cgs] 8.39 (0.03) 8.40 (0.03) 8.37 (0.03) 8.38 8.29 8.37 (0.05)
Mass [M] 0.846 (0.03) 0.85 (0.03) 0.829 (0.03) 0.835 0.762 0.83 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 3.2500 3.0910 2.9080
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] 10.59 (0.3) 10.40 (0.3) 10.40 (0.3) 10.59 10.59 (0.3) 10.40 (0.3)
Distance [pc] 94.43 (2) 96.15 (3) 96.19 (3) 94.43 94.43 (2) 96.19 (3)
Composition H H
Proper motion (right ascension) [mas/yr] -46.4347118 (0.3) -46.41008226 (0.5) -46.435 (0.3) -46.41008226
Proper motion (declination) [mas/yr] -57.12091517 (0.3) -57.50852066 (0.4) -57.121 (0.3) -57.50852066
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 18.19 (0.07)
H magnitude
K magnitude
u magnitude 19.48 (0.03) 19.51 (0.03) 19.51 (0.03)
g magnitude 19.01 (0.009) 19.01 (0.009)
r magnitude 18.85 (0.01) 18.85 (0.01)
i magnitude 18.81 (0.01) 18.81 (0.01)
z magnitude 18.88 (0.04) 18.88 (0.04)
G magnitude 18.81 (0.02) 18.84 18.81 18.81 (0.003) 18.84
BP magnitude 19.02 (0.02) 18.98 18.98
RP magnitude 18.50 (0.03) 18.46 18.46
Pan g magnitude 18.99 (0.009) 18.99 (0.01)
Pan r magnitude 18.84 (0.005) 18.84 (0.005)
Pan i magnitude 18.83 (0.006) 18.83 (0.005)
Pan z magnitude 18.88 (0.01) 18.88 (0.008)
Pan y magnitude 18.94 (0.04) 18.94 (0.05)
E(B-V) 0.011

* 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.