SDSS J084155.73+022350.5

All names: SDSS J084155.73+022350.5, Gaia DR2 3079104660578372480, WDJ084155.74+022350.71, Gaia DR3 3079104660578372480, SDSS J084155.74+022350.5, J0841+0223, WD 0839+025, SDSS J084155.74+022350.6, Gaia EDR3 3079104660578372480

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2025 Hardy et al. 2023a Caron et al. 2023 Kilic et al. 2020 MWDD H Gaia DR2 Stilism Ferrario et al. 2015 Kulebi et al. 2009 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 41 55.75 (0.2) 08 41 55.74 08 41 55.75 (0.2) 08 41 55.74 08 41 55.75 08 41 55.74 (0.2) 08 41 55.75 08 41 55.74 08 41 54.96 08 41 55.74
Declination 02 23 49.53 (0.1) 02 23 50.59 02 23 49.56 (0.2) 02 23 50.60 02 23 49.53 02 23 50.71 (0.1) 02 23 49.56 02 23 50.58 02 23 43.80 02 23 50.56
Spectral type DAH DAH DAH DAH DA DA DAH DA: DAH DAH DAH DAP7.2 DAH DAH
Effective temperature [K] 6905.0 (74) 6769.4 (57) 6991.0 (74) 6906.0 (74) 6923.0 7000.0 6812.0 (163) 6668.0 (49) 6587.0 (38)
log(g) [cgs] 8.26 (0.03) 8.26 (0.2) 8.32 (0.03) 8.29 (0.03) 8.29 8.00 (0) 8.23 (0.05) 8.99 (0.02) 10.00 (0.01)
Mass [M] 0.758 (0.03) 0.7557466972844086 (0.3) 0.799 (0.03) 0.776 (0.03) 0.779 0.737 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 3.1100 2.8820
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] 10.40 (0.2) 10.61 (0.3) 10.61 (0.3) 10.40 10.40 (0.2) 10.61 (0.3)
Distance [pc] 96.12 (2) 94.25 (3) 94.25 (3) 96.12 96.12 (2) 94.25 (3)
Composition H H H H
Proper motion (right ascension) [mas/yr] 11.40166794 (0.3) 11.33481276 (0.5) 11.402 (0.3) 11.335 7.9
Proper motion (declination) [mas/yr] -74.05198203 (0.2) -74.19819268 (0.3) -74.052 (0.2) -74.198 -75.8
Variability
Magnetic yes yes yes yes yes
Bd [MG] 6.4977728752026565 5 (1) 5.0 (1)
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 18.12 (0.04) 18.12 (0.04)
H magnitude 18.03 (0.07) 18.03 (0.07)
K magnitude 18.38 (0.2) 18.40 (0.2)
u magnitude 19.56 (0.03) 19.56 (0.03) 19.57 (0.03) 19.57 (0.03) 19.55 (0.04) 19.57 19.56 (0.04)
g magnitude 18.98 (0.01) 18.98 (0.01) 18.98 (0.01) 18.99 (0.02) 18.99 18.99 (0.02)
r magnitude 18.79 (0.01) 18.79 (0.01) 18.79 (0.01) 18.80 (0.02) 18.80 18.78 (0.02)
i magnitude 18.72 (0.01) 18.72 (0.01) 18.72 (0.01) 18.73 (0.02) 18.72 18.73 (0.02)
z magnitude 18.79 (0.04) 18.79 (0.04) 18.79 (0.04) 18.79 (0.04) 18.77 18.79 (0.04)
G magnitude 18.77 (0.03) 18.80 18.77 18.77 (0.003) 18.80
BP magnitude 19.06 (0.03) 18.97 18.97
RP magnitude 18.43 (0.03) 18.44 18.44
Pan g magnitude 18.97 (0.01) 18.97 (0.01)
Pan r magnitude 18.79 (0.007) 18.79 (0.008)
Pan i magnitude 18.75 (0.005) 18.75 (0.005)
Pan z magnitude 18.80 (0.01) 18.80 (0.009)
Pan y magnitude 18.83 (0.03) 18.83 (0.03)
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.