SDSS J095731.21+421548.5

All names: Gaia DR2 807848786777816448, SDSS J095731.21+421548.5, WD 0954+425, GALEX J095731.1+421548, Gaia EDR3 807848786777816448, Gaia DR3 807848786777816448

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 57 31.13 (0.3) 09 57 31.21 09 57 31.13 (0.4) 09 57 31.23 (0.3) 09 57 31.22 09 57 31.15 09 57 31.21
Declination 42 15 48.04 (0.3) 42 15 48.53 42 15 48.06 (0.4) 42 15 48.71 (0.3) 42 15 48.52 42 15 47.16 42 15 48.50
Spectral type DC+M DC+M DC+M DC: DC: DCM DC
Effective temperature [K] 8656.0 8537.0 10114.0 (51) 10118.0 (53)
log(g) [cgs] 8.04 7.98 8.25 (0.5) 9.06 (0.7)
Mass [M] 0.622 0.567
log(Luminosity) [L]
Cooling age [Gyr] 0.9316 0.9193
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 5.14 (0.4) 3.71 (0.7) 5.14 (0.4)
Distance [pc] 194.53 (16) 269.57 (47) 194.53 (16)
Composition
Proper motion (right ascension) [mas/yr] -72.42243019 (0.4) -72.88260791 (0.7) -72.422 (0.4) -75.0
Proper motion (declination) [mas/yr] -42.24008137 (0.4) -40.46446334 (0.8) -42.24 (0.4) -41.2
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.20 (0.05) 20.20 (0.05) 20.20 (0.05) 20.20 20.18 (0.05)
g magnitude 19.96 (0.02) 19.96 (0.02) 19.99 (0.02) 19.99 19.99 (0.02)
r magnitude 19.98 (0.02) 19.98 (0.03) 19.98 (0.03) 19.98 19.99 (0.03)
i magnitude 19.96 (0.04) 19.96 (0.04) 19.98 (0.04) 19.98 19.99 (0.04)
z magnitude 19.93 (0.1) 19.93 (0.1) 19.94 (0.1) 19.94 19.95 (0.1)
G magnitude 19.88 (0.06) 19.94 19.88 (0.005)
BP magnitude 20.00 (0.06) 19.94
RP magnitude 19.67 (0.07) 19.71
Pan g magnitude 19.92 (0.02)
Pan r magnitude 19.97 (0.02)
Pan i magnitude 20.05 (0.01)
Pan z magnitude 20.17 (0.03)
Pan y magnitude 19.95 (0.04)
E(B-V) 0.011

* 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.