US 2245

All names: Gaia DR3 1009066351031309184, US 2245, GALEX J090328.8+434623, Gaia DR2 1009066351031309184, SDSSJ090328.82+434623.3, Gaia EDR3 1009066351031309184, SDSS J090328.83+434623.3

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Geier 2020 MWDD H MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 Kleinman et al. 2013
Right ascension 09 03 28.84 (0.3) 09 03 28.83 09 03 28.82 09 03 28.84 (0.5) 09 03 28.83 (0.3) 09 03 28.83 09 03 28.83
Declination 43 46 23.30 (0.2) 43 46 23.32 43 46 23.30 43 46 23.30 (0.3) 43 46 23.36 (0.2) 43 46 23.34 43 46 23.33
Spectral type sdO DC DC sdO SDO DC_VERYHOT
Effective temperature [K] 13929.0 16297.0 42894.0 (3468) 41895.0 (3099)
log(g) [cgs] 6.52 6.76 5.37 (0.3) 5.50 (0.3)
Mass [M☉] 0.173 0.2
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.32 (0.4) 0.77 (0.5) 0.77 (0.5) 0.32 (0.4)
Distance [pc] 3149.80 (4418) 1293.83 (907) 1293.89 (907) 3149.61 (4417)
Composition
Proper motion (right ascension) [mas/yr] 1.09944007 (0.3) 1.045 (0.8) 1.044770545 (0.8) 1.099 (0.3) 2.9
Proper motion (declination) [mas/yr] -3.973593752 (0.3) -4.557 (0.6) -4.556753824 (0.6) -3.974 (0.3) -3.3
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.60
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.08 (0.02) 19.08 (0.02) 19.08 (0.02) 19.09 (0.04) 19.09 (0.04)
g magnitude 19.42 (0.01) 19.42 (0.01) 19.42 (0.01) 19.42 (0.02) 19.43 (0.02)
r magnitude 19.84 (0.02) 19.84 (0.02) 19.84 (0.02) 19.85 (0.03) 19.86 (0.03)
i magnitude 20.11 (0.04) 20.11 (0.04) 20.11 (0.04) 20.11 (0.04) 20.11 (0.04)
z magnitude 20.59 (0.2) 20.59 (0.2) 20.59 (0.2) 20.58 (0.2) 20.60 (0.2)
G magnitude 19.64 (0.05) 19.69 (0.005) 19.69 19.64 (0.005)
BP magnitude 19.52 (0.05) 19.41 (0.07) 19.41
RP magnitude 19.65 (0.06) 19.63 (0.08) 19.63
Pan g magnitude 19.53 (0.01) 19.52 (0.01)
Pan r magnitude 19.86 (0.02) 19.86 (0.02)
Pan i magnitude 20.14 (0.02) 20.14 (0.02)
Pan z magnitude 20.31 (0.02) 20.31 (0.03)
Pan y magnitude 20.29 (0.1) 20.29 (0.1)
E(B-V) 0.025

* 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.