SDSS J013121.78-081249.0

All names: SDSS J013121.78-081249.0, Gaia DR2 2477223955355233536, Gaia DR3 2477223955355233536, SDSS J013121.78-081249.00, Gaia EDR3 2477223955355233536, SDSS J013121.77-081249.0

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Simbad Vincent et al. 2023
Right ascension 01 31 21.79 (0.4) 01 31 21.78 01 31 21.79 (0.6) 01 31 21.77 (0.4)
Declination -08 12 48.99 (0.3) -08 12 49.01 -08 12 48.99 (0.4) -08 12 49.06 (0.3)
Spectral type DC: DC: DC: DC DC
Effective temperature [K] 7791.0 7528.0 8180.0 (179)
log(g) [cgs] 8.60 8.53 8.00 (0)
Mass [M] 0.98 0.918
log(Luminosity) [L]
Cooling age [Gyr] 3.3060 3.2240
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 6.16 (0.5) 6.19 (0.7) 6.16 (0.5)
Distance [pc] 162.30 (14) 161.57 (18) 162.30 (14)
Composition
Proper motion (right ascension) [mas/yr] 22.71550147 (0.6) 23.49052219 (1) 22.716 (0.6)
Proper motion (declination) [mas/yr] 4.369490248 (0.4) 4.207229498 (0.9) 4.369 (0.4)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.71 (0.08) 20.67 (0.08) 20.70 (0.08)
g magnitude 20.20 (0.02) 20.20 (0.02) 20.19 (0.02)
r magnitude 20.13 (0.03) 20.11 (0.03) 20.11 (0.03)
i magnitude 20.08 (0.03) 20.07 (0.03) 20.07 (0.03)
z magnitude 20.18 (0.1) 20.14 (0.1) 20.17 (0.1)
G magnitude 20.07 (0.05) 20.13 20.07 (0.005)
BP magnitude 20.24 (0.05) 20.22
RP magnitude 19.77 (0.06) 19.87
Pan g magnitude 20.15 (0.03)
Pan r magnitude 20.07 (0.01)
Pan i magnitude 20.13 (0.01)
Pan z magnitude 20.16 (0.02)
Pan y magnitude 20.00 (0.1)
E(B-V) 0.006

* 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.