SDSS J203908.91+001146.4

All names: SDSS J203908.92+001146.5, SDSS J203908.92+001146.4, Gaia DR3 4228136608443713920, Gaia EDR3 4228136608443713920, SDSS J203908.91+001146.4, Gaia DR2 4228136608443713920, WD 2036+000

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 20 39 08.93 (0.2) 20 39 08.92 20 39 08.93 (0.3) 20 39 08.92 (0.2) 20 39 08.92 20 39 08.69 20 39 08.92
Declination 00 11 46.32 (0.2) 00 11 46.49 00 11 46.32 (0.2) 00 11 46.46 (0.2) 00 11 46.49 00 11 43.08 00 11 46.50
Spectral type DA DA DA_auto DA DA DA
Effective temperature [K] 20040.0 26894.0 (502) 27723.0 (564)
log(g) [cgs] 8.56 8.50 (0.08) 8.44 (0.1)
Mass [M☉] 0.972 0.887 (0.06)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.2197
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] 2.77 (0.3) 2.96 (0.4) 2.77 (0.3)
Distance [pc] 361.02 (38) 337.91 (42) 361.02 (38)
Composition H
Proper motion (right ascension) [mas/yr] 11.55882273 (0.3) 12.02773611 (0.6) 11.559 (0.3) 2.1
Proper motion (declination) [mas/yr] -9.027666438 (0.2) -8.221304564 (0.5) -9.028 (0.2) -9.3
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) 19.00 (0.03) 19.00 19.00 (0.03)
g magnitude 19.15 (0.01) 19.15 (0.01) 19.16 (0.01) 19.16 19.16 (0.01)
r magnitude 19.54 (0.02) 19.54 (0.01) 19.55 (0.01) 19.55 19.53 (0.01)
i magnitude 19.82 (0.02) 19.82 (0.02) 19.83 (0.02) 19.84 19.82 (0.02)
z magnitude 20.23 (0.1) 20.23 (0.1) 20.24 (0.1) 20.25 20.22 (0.1)
G magnitude 19.34 (0.02) 19.38 19.34 (0.004)
BP magnitude 19.29 (0.02) 19.21
RP magnitude 19.62 (0.07) 19.59
Pan g magnitude 19.19 (0.009)
Pan r magnitude 19.54 (0.008)
Pan i magnitude 19.84 (0.02)
Pan z magnitude 20.12 (0.03)
Pan y magnitude 19.32 (0.2)
E(B-V) 0.037

* 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.