SDSS J093444.56+092443.2

All names: SDSS J093444.55+092443.31, Gaia DR2 588639321049959296, SDSS J093444.55+092443.3, SDSS J093444.56+092443.2, GALEX J093444.5+092443, Gaia DR3 588639321049959296, Gaia EDR3 588639321049959296

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 09 34 44.55 (0.1) 09 34 44.56 09 34 44.55 (0.2) 09 34 44.55 09 34 44.56 (0.1)
Declination 09 24 43.32 (0.08) 09 24 43.29 09 24 43.32 (0.1) 09 24 43.32 09 24 43.25 (0.08)
Spectral type DBA DBA DB DBA DB
Effective temperature [K] 16993.0 15671.0 14970.0 17342.0 (51) 17409.0 (55) 16996.0 (856)
log(g) [cgs] 8.23 7.97 7.89 8.27 (0.03) 8.18 (0.03) 8.09 (0.06)
Mass [M] 0.736 0.575 0.531 0.6990000000000001 (0.02) 0.647 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 0.1688
log(H/He) -4.511 -4.36 (0.1)
log(C/He)
log(Ca/He) <-6.05
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] 5.19 (0.1) 5.18 (0.2) 5.19 5.19 (0.1)
Distance [pc] 192.81 (4) 193.00 (7) 171.00 192.81 192.81 (4)
Composition He
Proper motion (right ascension) [mas/yr] -11.52277481 (0.1) -11.40091106 (0.3) -11.523 (0.1)
Proper motion (declination) [mas/yr] 4.476383731 (0.09) 4.15607079 (0.2) 4.476 (0.09)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.96 (0.03)
H magnitude
K magnitude 18.00 (0.1)
u magnitude 17.32 (0.009) 17.35 (0.03) 17.32 (0.009)
g magnitude 17.41 (0.005) 17.42 (0.02) 17.41 (0.005)
r magnitude 17.69 (0.006) 17.72 (0.03) 17.69 (0.006)
i magnitude 17.94 (0.008) 17.96 (0.02) 17.94 (0.008)
z magnitude 18.21 (0.03) 18.22 (0.03) 18.21 (0.03)
G magnitude 17.54 (0.009) 17.58 17.54 17.54 (0.003)
BP magnitude 17.49 (0.009) 17.45
RP magnitude 17.68 (0.02) 17.68
Pan g magnitude 17.44 (0.004)
Pan r magnitude 17.71 (0.004)
Pan i magnitude 17.96 (0.007)
Pan z magnitude 18.20 (0.004)
Pan y magnitude 18.33 (0.02)
E(B-V) 0.013

* 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.