WD 0841+540

All names: SDSS J084524.99+535208.9, GALEX J084525.0+535208, SDSS J084524.98+535208.8, Gaia DR2 1029607839578658560, SDSS J084525.00+535208.8, Gaia EDR3 1029607839578658560, WD 0841+540, J0845+5352, Gaia DR3 1029607839578658560

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Coutu et al. 2019 Gaia DR2 Stilism Dufour et al. 2007 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 45 25.14 (0.2) 08 45 25.00 08 45 25.00 08 45 25.14 (0.3) 08 45 25.14 08 45 25.00 (0.2) 08 45 24.99 08 45 25.15 08 45 24.99
Declination 53 52 09.00 (0.2) 53 52 08.80 53 52 08.77 53 52 09.00 (0.3) 53 52 09.00 53 52 08.77 (0.2) 53 52 08.86 53 52 04.08 53 52 08.86
Spectral type DZ DZ DZ: DZ DZ DZ DZ DA
Effective temperature [K] 7138.0 (167) 7180.0 (160) 7274.0 (204) 10082.0 (10) 10082.0 (10)
log(g) [cgs] 8.21 8.00 8.17 (0.06) 8.10 (0.6) 9.23 (0.8)
Mass [M] 0.7086 0.682 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 2.2200
log(H/He) <-3.8289 <-3.0
log(C/He)
log(Ca/He) -10.6827 (0.1) -10.71 (0.1)
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] 7.44 (0.3) 7.98 7.98 (0.4) 7.44 7.44 (0.3)
Distance [pc] 134.35 (5) 125.39 (6) 125.39 (6) 144.00 134.35 134.35 (5)
Composition He He
Proper motion (right ascension) [mas/yr] 78.46817226 (0.3) 77.7318148 (0.6) 78.468 (0.3) 74.2
Proper motion (declination) [mas/yr] 14.53068641 (0.3) 14.33557027 (0.5) 14.531 (0.3) 17.5
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.72 (0.03) 19.72 (0.03) 19.72 (0.04) 19.71 19.71 (0.04)
g magnitude 19.32 (0.01) 19.32 (0.01) 19.34 (0.02) 19.35 19.33 (0.02)
r magnitude 19.20 (0.01) 19.20 (0.01) 19.21 (0.02) 19.21 19.20 (0.02)
i magnitude 19.20 (0.02) 19.20 (0.02) 19.20 (0.02) 19.20 19.20 (0.02)
z magnitude 19.34 (0.06) 19.34 (0.07) 19.33 (0.06) 19.34 19.31 (0.06)
G magnitude 19.17 (0.03) 19.20 19.17 19.17 (0.003)
BP magnitude 19.35 (0.03) 19.29
RP magnitude 18.90 (0.03) 18.90
Pan g magnitude 19.29 (0.01)
Pan r magnitude 19.25 (0.01)
Pan i magnitude 19.26 (0.01)
Pan z magnitude 19.34 (0.02)
Pan y magnitude 19.25 (0.08)
E(B-V) 0.007

* 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.