USNO-A2.0 0900-20433042

All names: SDSS J233305.09+005155.7, USNO-A2.0 0900-20433042, SDSS J233305.08+005155.6, WD 2330+005, SDSS J233305.10+005155.9, Gaia DR2 2644715241677693312, Gaia DR3 2644715241677693312, SDSS J233305.10+005155.90, PB 5438, SDSS J233305.09+005155.8, Gaia EDR3 2644715241677693312, GALEX J233305.1+005156

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 23 33 05.07 (0.2) 23 33 05.10 23 33 05.07 (0.2) 23 33 05.11 (0.2) 23 33 05.10 23 33 04.66 23 33 05.10
Declination 00 51 55.59 (0.2) 00 51 55.76 00 51 55.60 (0.2) 00 51 55.85 (0.2) 00 51 55.80 00 51 52.56 00 51 55.87
Spectral type DB DB DB DB DB DB
Effective temperature [K] 21506.0 17239.0 15115.0 21366.0 (503) 20656.0 (948) 22857.0 (891)
log(g) [cgs] 8.13 7.48 7.33 8.00 (0.07) 8.18 (0.07) 8.09 (0.07)
Mass [M] 0.675 0.354 0.299 0.651 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.0945
log(H/He) -4.405 <-3.58
log(C/He)
log(Ca/He) <-4.03
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] 2.22 (0.2) 2.12 (0.3) 2.21 (0.2)
Distance [pc] 451.47 (45) 472.42 (64) 403.00 451.47 (45)
Composition He
Proper motion (right ascension) [mas/yr] -33.14771107 (0.2) -33.34901106 (0.5) -33.148 (0.2) -32.9
Proper motion (declination) [mas/yr] -15.9331709 (0.2) -16.33288646 (0.4) -15.933 (0.2) -16.9
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.50
V magnitude
R magnitude 18.40 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.45 (0.02) 18.45 (0.02) 18.44 (0.03) 18.44 18.42 (0.02)
g magnitude 18.51 (0.007) 18.51 (0.007) 18.60 (0.02) 18.60 18.58 (0.02)
r magnitude 18.81 (0.01) 18.81 (0.01) 18.90 (0.03) 18.90 18.88 (0.03)
i magnitude 19.06 (0.01) 19.06 (0.01) 19.16 (0.03) 19.15 19.12 (0.03)
z magnitude 19.25 (0.05) 19.25 (0.06) 19.42 (0.09) 19.42 19.39 (0.09)
G magnitude 18.66 (0.02) 18.71 18.66 (0.004)
BP magnitude 18.65 (0.02) 18.56
RP magnitude 18.85 (0.05) 18.70
Pan g magnitude 18.55 (0.007)
Pan r magnitude 18.83 (0.006)
Pan i magnitude 19.11 (0.009)
Pan z magnitude 19.29 (0.02)
Pan y magnitude 19.38 (0.07)
E(B-V) 0.040

* 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.