Gaia DR2 657673498630210176

All names: Gaia DR2 657673498630210176, WDJ084027.0+151840.83, Gaia EDR3 657673498630210176, SDSS J084026.99+151840.6, SDSS J084027.00+151840.6, J0840+1518, WDJ084027.00+151840.84, Gaia DR3 657673498630210176

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Caron et al. 2023 Blouin & Xu 2022 Kilic et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Vincent et al. 2023
Right ascension 08 40 26.99 (0.2) 08 40 26.99 08 40 26.99 08 40 27.00 (0.2) 08 40 26.99
Declination 15 18 40.13 (0.1) 15 18 40.15 15 18 40.13 15 18 40.84 (0.1) 15 18 40.15
Spectral type DAZ DAZ DAZ DA DA DA
Effective temperature [K] 6398.0 (34) 6420.0 (34) 6352.0 (47) 6401.0 (34) 6323.0 6088.0 6352.0 (119)
log(g) [cgs] 8.13 (0.02) 8.16 (0.03) 8.12 (0.04) 8.16 (0.03) 8.13 8.00 8.11 (0.04)
Mass [M] 0.673 (0.02) 0.673 (0.03) 0.665 (0.02) 0.687 (0.02) 0.669 0.571 0.657 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 2.8400 2.5500 2.6230 2.3810
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) -8.82 -8.82 (0.08)
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] 10.89 (0.2) 11.05 (0.3) 10.89 (0.2) 11.05 (0.3) 10.89 10.89 (0.2) 11.05 (0.3)
Distance [pc] 91.79 (2) 90.50 (2) 91.79 (2) 90.52 (2) 91.79 91.79 (2) 90.52 (2)
Composition H H
Proper motion (right ascension) [mas/yr] -7.067728292 (0.2) -6.919125241 (0.5) -7.068 (0.2) -6.919125241
Proper motion (declination) [mas/yr] -44.57426707 (0.2) -44.46151888 (0.3) -44.574 (0.2) -44.46151888
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 18.03 (0.04)
H magnitude
K magnitude
u magnitude 19.78 (0.03) 19.78 (0.03) 19.78 (0.03)
g magnitude 19.08 (0.01) 19.08 (0.01)
r magnitude 18.79 (0.01) 18.79 (0.01)
i magnitude 18.63 (0.01) 18.63 (0.01)
z magnitude 18.66 (0.03) 18.66 (0.03)
G magnitude 18.77 (0.03) 18.79 18.77 18.77 (0.003) 18.79
BP magnitude 19.08 (0.03) 19.04 19.04
RP magnitude 18.38 (0.02) 18.35 18.35
Pan g magnitude 19.05 (0.007) 19.05 (0.006) 19.05 (0.007)
Pan r magnitude 18.77 (0.009) 18.77 (0.008) 18.77 (0.009)
Pan i magnitude 18.72 (0.002) 18.72 (0.002) 18.72 (0.002)
Pan z magnitude 18.67 (0.01) 18.67 (0.01) 18.67 (0.01)
Pan y magnitude 18.73 (0.03) 18.73 (0.03) 18.73 (0.03)
E(B-V) 0.004

* 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.