SDSS J075236.78+441642.4

All names: GALEX J075236.8+441643, SDSS J075236.79+441642.35, LAMOST J075236.66+441643.7, Gaia EDR3 926148365250203776, Gaia DR3 926148365250203776, Gaia DR2 926148365250203776, SDSS J075236.78+441642.5, SDSS J075236.78+441642.4, SDSSJ075236.78+441642.4, SDSS J075236.79+441642.3

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 SDSS DR10 Geier 2020 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Simbad Eisenstein et al. 2006
Right ascension 07 52 36.80 (0.09) 07 52 36.78 07 52 36.78 07 52 36.78 07 52 36.80 (0.1) 07 52 36.79 (0.09) 07 52 36.78
Declination 44 16 42.25 (0.08) 44 16 42.51 44 16 42.51 44 16 42.40 44 16 42.26 (0.09) 44 16 42.50 (0.08) 44 16 42.46
Spectral type sdB He-sdB He-sdB sdO SDO
Effective temperature [K] 34234.0 (1046) 25221.0 35073.0 (342) 34855.0 (265)
log(g) [cgs] 5.75 (0.2) 5.29 5.70 (0.06) 5.62 (0.05)
Mass [M] 0.052
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.49 (0.1) 0.56 (0.1) 0.56 (0.1) 0.49 (0.1)
Distance [pc] 2025.38 (457) 1772.74 (458) 1772.83 (458) 2025.52 (457)
Composition
Proper motion (right ascension) [mas/yr] 7.576008867 (0.1) 7.71 (0.2) 7.709545195 (0.2) 7.576 (0.1) 10.2
Proper motion (declination) [mas/yr] -15.55982291 (0.09) -15.332 (0.2) -15.331507 (0.2) -15.56 (0.09) -17.1
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.06 (0.008) 17.06 (0.008) 17.06 (0.008) 17.05 (0.01) 17.06 (0.008) 17.03 (0.01)
g magnitude 17.33 (0.005) 17.33 (0.005) 17.33 (0.005) 17.34 (0.02) 17.33 (0.005) 17.31 (0.02)
r magnitude 17.78 (0.006) 17.78 (0.006) 17.78 (0.006) 17.78 (0.01) 17.78 (0.006) 17.77 (0.02)
i magnitude 18.11 (0.008) 18.11 (0.008) 18.11 (0.008) 18.11 (0.02) 18.11 (0.008) 18.11 (0.02)
z magnitude 18.41 (0.03) 18.41 (0.03) 18.41 (0.03) 18.41 (0.03) 18.40 (0.03) 18.40 (0.03)
G magnitude 17.56 (0.01) 17.59 (0.002) 17.59 17.56 (0.003)
BP magnitude 17.44 (0.01) 17.37 (0.01) 17.37
RP magnitude 17.79 (0.03) 17.80 (0.02) 17.80
Pan g magnitude 17.40 (0.004) 17.40 (0.004)
Pan r magnitude 17.79 (0.004) 17.80 (0.004)
Pan i magnitude 18.14 (0.003) 18.14 (0.003)
Pan z magnitude 18.41 (0.02) 18.41 (0.02)
Pan y magnitude 18.65 (0.007) 18.65 (0.007)
E(B-V) 0.035

* 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.