GALEX 2680954616701521003

All names: Gaia EDR3 1600536570925460480, GALEX 2680954616701521003, Gaia DR3 1600536570925460480, Gaia DR2 1600536570925460480, SDSS J151727.59+552452.8, SDSS J151727.59+552452.6, USNO-A2.0 1425-08271450, SDSS J151727.59+552452.7

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 17 27.60 (0.2) 15 17 27.59 15 17 27.60 (0.2) 15 17 27.60 15 17 27.60 (0.2) 15 17 27.59
Declination 55 24 53.12 (0.2) 55 24 52.83 55 24 53.11 (0.2) 55 24 53.12 55 24 52.66 (0.2) 55 24 52.58
Spectral type DC:DB:DC DC:DB:DC DB DC DC:DB:DC DB
Effective temperature [K] 10761.0 11266.0 11901.0 (134) 13280.0 (810) 12136.0 (257)
log(g) [cgs] 7.86 7.84 8.00 (0) 8.14 (0.09) 8.21 (0.2)
Mass [M] 0.523 0.495 0.67 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 0.4181 0.3686
log(H/He) <-5.58
log(C/He)
log(Ca/He) <-9.85
log(Ca/H)
Parallax [mas] 3.69 (0.2) 3.62 (0.2) 3.69 3.62 (0.2)
Distance [pc] 271.05 (13) 275.97 (18) 260.00 271.05 275.97 (18)
Composition
Proper motion (right ascension) [mas/yr] -0.502949655 (0.2) -0.173256043 (0.4) -0.173 (0.4)
Proper motion (declination) [mas/yr] 29.33183968 (0.2) 29.04637836 (0.4) 29.046 (0.4)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.10 (0.3)
V magnitude
R magnitude 18.70 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.93 (0.02) 18.93 (0.02) 18.90 (0.02)
g magnitude 18.88 (0.01) 18.88 (0.01) 18.88 (0.01)
r magnitude 19.06 (0.01) 19.06 (0.01) 19.06 (0.02)
i magnitude 19.21 (0.02) 19.21 (0.01) 19.23 (0.02)
z magnitude 19.57 (0.06) 19.57 (0.06) 19.42 (0.07)
G magnitude 18.92 (0.04) 18.97 18.92 18.97 (0.003)
BP magnitude 18.87 (0.04) 18.88
RP magnitude 19.00 (0.03) 18.93
Pan g magnitude 18.89 (0.01)
Pan r magnitude 19.06 (0.01)
Pan i magnitude 19.25 (0.008)
Pan z magnitude 19.42 (0.02)
Pan y magnitude 19.48 (0.03)
E(B-V) 0.019

* 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.