SDSS J200757.10-120832.0

All names: Gaia DR3 6880697900670837632, SDSS J200757.10-120832.00, GALEX J200757.0-120831, Gaia EDR3 6880697900670837632, SDSS J200757.10-120832.0, J2007-1208, Gaia DR2 6880697900670837632, SDSS J200757.09-120831.9

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) Coutu et al. 2019 Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 20 07 57.10 (0.08) 20 07 57.10 20 07 57.09 20 07 57.10 (0.08) 20 07 57.10 20 07 57.09 (0.08) 20 07 57.10
Declination -12 08 31.95 (0.05) -12 08 31.98 -12 08 32.01 -12 08 31.95 (0.05) -12 08 31.95 -12 08 32.01 (0.05) -12 08 32.00
Spectral type DBZA DB DBAZH DBAZH: DB
Effective temperature [K] 14824.0 12365.0 12151.0 (506) 14202.0 (35) 12524.0 (183) 14520.0 (71)
log(g) [cgs] 8.21 7.99 7.95 8.00 (0) 8.00 (0.02) 8.59 (0.05)
Mass [M] 0.721 0.576 0.5582 0.583 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.3460
log(H/He) -4.573 -5.0286 (0.07) -4.63 (0.09)
log(C/He)
log(Ca/He) -9.8095 (0.2) -8.42 (0.2)
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] 8.89 (0.09) 8.99 8.99 (0.1) 8.89 8.89 (0.09)
Distance [pc] 112.48 (1) 111.21 (1) 111.21 (1) 121.00 112.48 112.48 (1)
Composition He
Proper motion (right ascension) [mas/yr] 6.259090745 (0.08) 6.01828435 (0.2) 6.259 (0.08)
Proper motion (declination) [mas/yr] 3.669387756 (0.06) 3.683465074 (0.1) 3.669 (0.06)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.85 (0.009) 16.85 (0.009) 16.84 (0.02)
g magnitude 16.85 (0.004) 16.85 (0.004) 16.88 (0.01)
r magnitude 17.07 (0.005) 17.07 (0.005) 17.08 (0.01)
i magnitude 17.25 (0.006) 17.25 (0.006) 17.24 (0.01)
z magnitude 17.47 (0.02) 17.47 (0.02) 17.46 (0.02)
G magnitude 16.94 (0.004) 16.97 16.94 16.94 (0.003)
BP magnitude 16.92 (0.004) 16.88
RP magnitude 16.96 (0.007) 16.95
Pan g magnitude 16.92 (0.003)
Pan r magnitude 17.11 (0.002)
Pan i magnitude 17.29 (0.004)
Pan z magnitude 17.48 (0.007)
Pan y magnitude 17.65 (0.03)
E(B-V) 0.045

* 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.