SDSS J003902.55+004821.3

All names: Gaia EDR3 2543379199176576640, Gaia DR3 2543379199176576640, SDSS J003902.55+004821.3, Gaia DR2 2543379199176576640, GALEX J003902.4+004821, USNO-A2.0 0900-00152605, SDSS J003902.55+004821.1, SDSS J003902.55+004821.41, SDSS J003902.55+004821.4

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 00 39 02.55 (0.2) 00 39 02.55 00 39 02.55 (0.3) 00 39 02.55 00 39 02.55 (0.2)
Declination 00 48 21.12 (0.1) 00 48 21.39 00 48 21.13 (0.2) 00 48 21.12 00 48 21.48 (0.1)
Spectral type DC: DC: DC: DC DC DC
Effective temperature [K] 10487.0 10679.0 10091.0 (462) 11080.0 (511)
log(g) [cgs] 8.11 8.06 7.45 (0.5) 8.02 (0.09)
Mass [M] 0.666 0.617 0.596 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 0.6184 0.5707
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 4.40 (0.3) 4.64 (0.3) 4.40 4.40 (0.3)
Distance [pc] 227.25 (13) 215.59 (15) 227.25 227.25 (13)
Composition
Proper motion (right ascension) [mas/yr] -5.081942575 (0.3) -4.898710539 (0.6) -5.082 (0.3)
Proper motion (declination) [mas/yr] -22.7769495 (0.2) -22.62821287 (0.4) -22.777 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.10 (0.3)
V magnitude
R magnitude 18.30 (0.3)
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.89 (0.02) 18.89 (0.02) 18.89 (0.02)
g magnitude 18.79 (0.009) 18.79 (0.01) 18.79 (0.009)
r magnitude 18.89 (0.01) 18.89 (0.01) 18.89 (0.01)
i magnitude 19.10 (0.02) 19.10 (0.02) 19.10 (0.02)
z magnitude 19.17 (0.06) 19.17 (0.06) 19.17 (0.06)
G magnitude 18.85 (0.02) 18.89 18.85 18.85 (0.003)
BP magnitude 18.88 (0.02) 18.80
RP magnitude 18.82 (0.03) 18.71
Pan g magnitude 18.82 (0.009)
Pan r magnitude 18.94 (0.006)
Pan i magnitude 19.12 (0.005)
Pan z magnitude 19.25 (0.02)
Pan y magnitude 19.39 (0.07)
E(B-V) 0.017

* 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.