SDSS J152046.67+180300.7

All names: GALEX J152046.6+180300, Gaia EDR3 1208975505039996928, SDSS J152046.67+180300.76, SDSSJ152046.66+180300.7, Gaia DR2 1208975505039996928, Gaia DR3 1208975505039996928, SDSS J152046.66+180300.7, LAMOST J152046.66+180300.7, SDSS J152046.67+180300.7

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Geier 2020 MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Simbad
Right ascension 15 20 46.66 (0.04) 15 20 46.67 15 20 46.66 15 20 46.66 (0.09) 15 20 46.67 (0.04)
Declination 18 03 00.68 (0.05) 18 03 00.76 18 03 00.70 18 03 00.68 (0.07) 18 03 00.71 (0.05)
Spectral type He-sdOB PG1159 PG1159 PG1159
Effective temperature [K] 22004.0 45818.0 (42)
log(g) [cgs] 4.68 7.00 (0.5)
Mass [M] 0.24
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.28 (0.07) 0.22 (0.1) 0.22 (0.1) 0.28 (0.07)
Distance [pc] 3590.16 (906) 4516.71 (2009) 4517.53 (2011) 3590.66 (906)
Composition
Proper motion (right ascension) [mas/yr] -8.313493803 (0.08) -8.527 (0.2) -8.526545927 (0.2) -8.313 (0.08)
Proper motion (declination) [mas/yr] -1.964579615 (0.08) -1.769 (0.2) -1.769065077 (0.2) -1.965 (0.08)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.58 (0.007) 16.58 (0.007) 16.54 (0.02) 16.56 (0.007)
g magnitude 16.85 (0.004) 16.85 (0.004) 16.87 (0.01) 16.84 (0.004)
r magnitude 17.26 (0.005) 17.26 (0.005) 17.27 (0.01) 17.26 (0.005)
i magnitude 17.58 (0.006) 17.58 (0.006) 17.58 (0.02) 17.57 (0.006)
z magnitude 18.09 (0.02) 18.09 (0.02) 18.12 (0.05) 18.08 (0.02)
G magnitude 17.05 (0.005) 17.08 (0.002) 17.08 17.05 (0.003)
BP magnitude 16.94 (0.005) 16.88 (0.01) 16.88
RP magnitude 17.27 (0.009) 17.25 (0.01) 17.25
Pan g magnitude 16.92 (0.007) 16.92 (0.007)
Pan r magnitude 17.27 (0.002) 17.27 (0.002)
Pan i magnitude 17.60 (0.002) 17.60 (0.002)
Pan z magnitude 17.84 (0.007) 17.84 (0.007)
Pan y magnitude 18.00 (0.008) 18.00 (0.008)
E(B-V) 0.043

* 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.