Gaia DR2 684258010458273152

All names: Gaia DR3 684258010458273152, SDSS J081741.25+290202.1, WDJ081741.25+290202.26, SDSS J081741.24+290202.0, Gaia DR2 684258010458273152, Gaia EDR3 684258010458273152, J0817+2902

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 08 17 41.23 (0.2) 08 17 41.23 08 17 41.23 08 17 41.25 (0.2) 08 17 41.23
Declination 29 02 00.84 (0.2) 29 02 00.89 29 02 00.84 29 02 02.25 (0.2) 29 02 00.89
Spectral type DC DC DC DA DC
Effective temperature [K] 5966.0 (60) 5984.0 (63) 5966.0 (61) 6456.0 6214.0 6662.0 (231)
log(g) [cgs] 8.16 (0.03) 8.16 (0.03) 8.14 (0.04) 8.39 8.28 8.49 (0.06)
Mass [M] 0.672 (0.03) 0.671 (0.03) 0.661 (0.03) 0.845 0.752 0.911 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 3.8300 4.0910 4.1000
log(H/He) -3.0 -3.0 -3
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] 11.19 (0.2) 11.07 (0.3) 11.07 (0.3) 11.19 11.19 (0.2) 11.07 (0.3)
Distance [pc] 89.39 (2) 90.33 (3) 90.33 (3) 89.39 89.39 (2) 90.33 (3)
Composition He
Proper motion (right ascension) [mas/yr] -11.42381663 (0.3) -10.72769772 (0.6) -11.424 (0.3) -10.72769772
Proper motion (declination) [mas/yr] -88.16217173 (0.2) -88.63798989 (0.5) -88.162 (0.2) -88.63798989
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 18.39 (0.07)
H magnitude 18.26 (0.1)
K magnitude 18.03 (0.2)
u magnitude 20.09 (0.04) 20.10 (0.04) 20.02 (0.04)
g magnitude 19.38 (0.01) 19.41 (0.01)
r magnitude 19.13 (0.01) 19.08 (0.01)
i magnitude 19.00 (0.01) 19.01 (0.01)
z magnitude 19.05 (0.05) 19.01 (0.05)
G magnitude 19.10 (0.03) 19.13 19.10 19.10 (0.004) 19.13
BP magnitude 19.36 (0.03) 19.35 19.35
RP magnitude 18.78 (0.04) 18.77 18.77
Pan g magnitude 19.36 (0.009) 19.36 (0.009)
Pan r magnitude 19.10 (0.008) 19.10 (0.007)
Pan i magnitude 19.01 (0.01) 19.01 (0.009)
Pan z magnitude 19.07 (0.01) 19.07 (0.02)
Pan y magnitude 19.05 (0.03) 19.05 (0.02)
E(B-V) 0.003

* 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.