SDSS J030922.05+010556.4

All names: SDSS J030922.05+010556.3, Gaia DR3 3267133415354337152, SDSS J030922.06+010556.2, GALEX J030922.1+010556, WD 0306+009, SDSS J030922.06+010556.3, Gaia EDR3 3267133415354337152, Gaia DR2 3267133415354337152, SDSS J030922.05+010556.4, SDSS J030922.05+010556.40

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 03 09 22.09 (0.2) 03 09 22.06 03 09 22.09 (0.4) 03 09 22.05 (0.2) 03 09 22.06 03 09 21.60 03 09 22.05
Declination 01 05 56.31 (0.2) 01 05 56.28 01 05 56.31 (0.3) 01 05 56.34 (0.2) 01 05 56.34 01 05 53.16 01 05 56.37
Spectral type DB DB DB DB DB DB
Effective temperature [K] 17238.0 17981.0 12586.0 16727.0 (94) 17050.0 (265) 17079.0 (330)
log(g) [cgs] 8.15 8.02 7.63 8.13 (0.06) 7.84 (0.2) 7.85 (0.2)
Mass [M] 0.685 0.605 0.399
log(Luminosity) [L]
Cooling age [Gyr] 0.2115
log(H/He) <-5.86 <-5.11
log(C/He)
log(Ca/He) <-6.46
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] 2.94 (0.3) 2.56 (0.4) 2.94 (0.3)
Distance [pc] 340.25 (30) 390.45 (64) 315.00 340.25 (30)
Composition He
Proper motion (right ascension) [mas/yr] 35.88089147 (0.4) 35.34056029 (0.9) 35.881 (0.4) 34.8
Proper motion (declination) [mas/yr] -2.32418728 (0.3) -2.997484064 (0.7) -2.324 (0.3) -3.8
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.99 (0.02) 18.99 (0.02) 18.96 (0.03) 18.96 18.99 (0.03)
g magnitude 18.99 (0.009) 18.99 (0.009) 19.03 (0.03) 19.03 19.04 (0.03)
r magnitude 19.27 (0.01) 19.27 (0.01) 19.26 (0.03) 19.26 19.26 (0.03)
i magnitude 19.43 (0.02) 19.43 (0.02) 19.49 (0.03) 19.49 19.49 (0.03)
z magnitude 19.49 (0.07) 19.49 (0.07) 19.78 (0.09) 19.77 19.78 (0.09)
G magnitude 19.11 (0.07) 19.15 19.11 (0.004)
BP magnitude 19.01 (0.07) 19.03
RP magnitude 19.13 (0.08) 18.99
Pan g magnitude 19.08 (0.02)
Pan r magnitude 19.26 (0.008)
Pan i magnitude 19.47 (0.02)
Pan z magnitude 19.71 (0.01)
Pan y magnitude 19.72 (0.07)
E(B-V) 0.042

* 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.