SDSS J075426.72+374208.2

All names: Gaia DR2 919194469600719232, GALEX J075426.7+374207, SDSS J075426.72+374208.2, Gaia DR3 919194469600719232, Gaia EDR3 919194469600719232, SDSS J075426.73+374208.22, SDSS J075426.73+374208.2, SDSS J075426.72+374208.1

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 07 54 26.72 (0.3) 07 54 26.72 07 54 26.72 (0.4) 07 54 26.73 (0.3)
Declination 37 42 08.21 (0.3) 37 42 08.20 37 42 08.21 (0.3) 37 42 08.19 (0.3)
Spectral type DC: DC: DC: DC DA
Effective temperature [K] 9377.0 9644.0 12126.0 (1000)
log(g) [cgs] 7.36 7.34 7.93 (0.05)
Mass [M] 0.306 0.282
log(Luminosity) [L]
Cooling age [Gyr] 0.3817 0.3641
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 2.51 (0.5) 2.62 (0.5) 2.51 (0.5)
Distance [pc] 398.79 (76) 382.22 (78) 398.79 (76)
Composition
Proper motion (right ascension) [mas/yr] -6.975308913 (0.4) -6.522433238 (0.8) -6.975 (0.4)
Proper motion (declination) [mas/yr] 1.095391951 (0.3) 0.909245119 (0.6) 1.095 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.42 (0.02) 19.42 (0.02) 19.42 (0.02)
g magnitude 19.35 (0.01) 19.35 (0.01) 19.35 (0.01)
r magnitude 19.49 (0.01) 19.49 (0.01) 19.49 (0.01)
i magnitude 19.64 (0.02) 19.64 (0.02) 19.64 (0.02)
z magnitude 20.11 (0.1) 20.11 (0.1) 20.11 (0.1)
G magnitude 19.39 (0.05) 19.44 19.39 (0.004)
BP magnitude 19.42 (0.05) 19.47
RP magnitude 19.38 (0.08) 19.43
Pan g magnitude 19.40 (0.01)
Pan r magnitude 19.52 (0.01)
Pan i magnitude 19.66 (0.008)
Pan z magnitude 19.81 (0.01)
Pan y magnitude 19.59 (0.03)
E(B-V) 0.033

* 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.