SDSS J084223.14+140615.9

All names: SDSS J084223.15+140615.9, Gaia DR3 609236712891803264, SDSS J084223.14+140615.8, Gaia EDR3 609236712891803264, GALEX J084223.2+140616, Gaia DR2 609236712891803264, WDJ084223.16+140616.59, J0842+1406, SDSS J084223.14+140615.9, SDSS J084223.15+140616.0

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR14 Kilic et al. 2025 Caron et al. 2023 Blouin 2020 Coutu et al. 2019 MWDD H MWDD HE Gaia DR2 Hollands et al. 2017 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Vincent et al. 2023
Right ascension 08 42 23.10 (0.1) 08 42 23.14 08 42 23.14 08 42 23.10 (0.2) 08 42 23.10 08 42 23.16 (0.1) 08 42 23.10
Declination 14 06 14.66 (0.06) 14 06 15.95 14 06 15.95 14 06 14.72 (0.1) 14 06 14.66 14 06 16.59 (0.06) 14 06 14.72
Spectral type DZ DZ DZ DZ DZ DZ DZ DZ DZ
Effective temperature [K] 7041.0 (44) 7132.0 (36) 7075.0 (71) 7111.0 (55) 8556.0 8293.0 7160.0 (90) 7111.0 (101)
log(g) [cgs] 7.97 (0.02) 8.01 (0.03) 7.99 (0.04) 7.99 8.32 8.24 7.93 (0.03)
Mass [M] 0.559 (0.02) 0.581 (0.02) 0.567 (0.02) 0.5683 0.802 0.731 0.531 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 1.5800 1.4700 1.5150 1.4830 1.8000
log(H/He) -4.0 <-3.9726
log(C/He)
log(Ca/He) -8.79 -8.39 -8.4 (0.1) -8.4467 (0.06) -8.16
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He) -7.2 (0.1) -7.2
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) -7.4 (0.1) -7.3
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 10.12 (0.1) 10.09 (0.2) 10.09 10.09 (0.2) 10.12 10.12 (0.1) 10.09 (0.2)
Distance [pc] 98.83 (1) 99.11 (2) 98.88 (2) 99.09 (2) 99.09 (2) 93.00 (12) 98.83 98.83 (1) 99.09 (2)
Composition He He He He He
Proper motion (right ascension) [mas/yr] -60.03511992 (0.2) -60.06729239 (0.4) -60.035 (0.2) -60.067
Proper motion (declination) [mas/yr] -120.8926761 (0.1) -120.9346105 (0.2) -120.893 (0.1) -120.935
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.94 (0.04)
H magnitude
K magnitude
u magnitude 19.29 (0.02) 19.29 (0.02) 19.29 (0.03) 19.29 (0.03) 19.29 (0.02) 19.31 (0.03)
g magnitude 18.31 (0.007) 18.31 (0.02) 18.31 (0.02) 18.30 (0.007) 18.31 (0.007)
r magnitude 18.17 (0.007) 18.17 (0.03) 18.17 (0.03) 18.17 (0.007) 18.18 (0.008)
i magnitude 18.27 (0.009) 18.27 (0.02) 18.27 (0.02) 18.27 (0.009) 18.28 (0.01)
z magnitude 18.44 (0.02) 18.44 (0.03) 18.44 (0.03) 18.44 (0.02) 18.44 (0.03)
G magnitude 18.20 (0.01) 18.22 18.20 18.20 (0.003) 18.22
BP magnitude 18.34 (0.01) 18.37 18.37
RP magnitude 17.99 (0.01) 17.97 17.97
Pan g magnitude 18.28 (0.006) 18.28 (0.006)
Pan r magnitude 18.20 (0.004) 18.20 (0.005)
Pan i magnitude 18.29 (0.009) 18.29 (0.01)
Pan z magnitude 18.44 (0.01) 18.44 (0.01)
Pan y magnitude 18.46 (0.1) 18.46 (0.1)
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.