SDSS J084456.07+075132.6

All names: SDSS J084456.07+075132.6, Gaia DR2 595512333875785216, SDSS J084456.07+075132.5, SDSS J084456.07+075132.60, Gaia DR3 595512333875785216, Gaia EDR3 595512333875785216, SDSS J084456.06+075132.5

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 44 56.05 (0.3) 08 44 56.07 08 44 56.05 (0.4) 08 44 56.08 (0.3) 08 44 56.07
Declination 07 51 32.24 (0.2) 07 51 32.57 07 51 32.26 (0.3) 07 51 32.62 (0.2) 07 51 32.58
Spectral type DB DB DB DB
Effective temperature [K] 12416.0 13260.0 12329.0 13298.0 (491)
log(g) [cgs] 7.36 8.09 7.99 8.15 (0.4)
Mass [M] 0.299 0.642 0.579 0.67 (0.2)
log(Luminosity) [L]
Cooling age [Gyr] 0.3495
log(H/He) -5.78
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] 2.63 (0.5) 2.58 (0.5) 2.63 (0.5)
Distance [pc] 380.00 (65) 387.03 (81) 380.00 (65)
Composition He
Proper motion (right ascension) [mas/yr] -22.4372351 (0.4) -22.41652232 (0.9) -22.437 (0.4)
Proper motion (declination) [mas/yr] -23.79437732 (0.3) -23.94131568 (0.5) -23.794 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.64 (0.03) 19.64 (0.03) 19.66 (0.03)
g magnitude 19.59 (0.01) 19.59 (0.01) 19.61 (0.03)
r magnitude 19.86 (0.02) 19.86 (0.02) 19.85 (0.02)
i magnitude 20.04 (0.02) 20.04 (0.02) 20.04 (0.03)
z magnitude 20.32 (0.1) 20.32 (0.1) 20.29 (0.1)
G magnitude 19.70 (0.04) 19.76 19.70 (0.004)
BP magnitude 19.65 (0.04) 19.60
RP magnitude 19.78 (0.06) 19.66
Pan g magnitude 19.67 (0.02)
Pan r magnitude 19.86 (0.01)
Pan i magnitude 20.04 (0.01)
Pan z magnitude 20.20 (0.02)
Pan y magnitude
E(B-V) 0.026

* 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.