SDSS J090907.15+193840.6

All names: SDSS J090907.15+193840.6, Gaia DR2 636388602783552512, Gaia DR3 636388602783552512, Gaia EDR3 636388602783552512, GALEX J090907.2+193840

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 09 07.14 (0.6) 09 09 07.15 09 09 07.14 (0.9) 09 09 07.16 (0.6) 09 09 07.15
Declination 19 38 40.47 (0.5) 19 38 40.62 19 38 40.48 (0.8) 19 38 40.69 (0.5) 19 38 40.65
Spectral type DA DAH DAH DAH DA
Effective temperature [K] 10648.2 (196) 8995.0 9871.0 (176)
log(g) [cgs] 8.14 (0.2) 7.78 8.04 (0.2)
Mass [M] 0.689047124258538 (0.3) 0.477
log(Luminosity) [L]
Cooling age [Gyr] 0.6056
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 2.34 (0.7) 2.87 (1) 2.34 (0.7)
Distance [pc] 426.48 (131) 347.94 (135) 426.48 (131)
Composition H
Proper motion (right ascension) [mas/yr] -20.02596536 (0.8) -19.2674271 (2) -20.026 (0.8)
Proper motion (declination) [mas/yr] -13.79639705 (0.6) -14.77267315 (1) -13.796 (0.6)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.44 (0.05) 20.39 (0.05) 20.39 (0.05)
g magnitude 19.99 (0.02) 19.99 (0.02) 19.99 (0.02)
r magnitude 20.03 (0.02) 20.03 (0.02) 20.03 (0.02)
i magnitude 20.20 (0.03) 20.20 (0.03) 20.20 (0.03)
z magnitude 20.41 (0.2) 20.37 (0.2) 20.37 (0.2)
G magnitude 19.99 (0.06) 20.04 19.99 (0.006)
BP magnitude 20.14 (0.06) 19.99
RP magnitude 19.95 (0.09) 19.92
Pan g magnitude 19.91 (0.01)
Pan r magnitude 20.07 (0.006)
Pan i magnitude 20.15 (0.02)
Pan z magnitude 20.31 (0.06)
Pan y magnitude 19.91 (0.04)
E(B-V) 0.030

* 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.