SDSS J125511.88+485117.6

All names: SDSS J125511.89+485117.6, WD 1252+491, SDSS J125511.88+485117.6, SDSS J125511.87+485117.5, GALEX J125511.8+485118, SDSS J125511.88+485117.5, Gaia DR2 1555370213803883008, Gaia EDR3 1555370213803883008, SDSS J125511.87+485117.6, SDSS J125511.88+485117.60, Gaia DR3 1555370213803883008

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 55 11.85 (0.3) 12 55 11.88 12 55 11.85 (0.4) 12 55 11.88 (0.3) 12 55 11.89 12 55 11.81 12 55 11.88
Declination 48 51 17.62 (0.3) 48 51 17.59 48 51 17.62 (0.3) 48 51 17.65 (0.3) 48 51 17.58 48 51 15.84 48 51 17.58
Spectral type DB DB DB DB DB DB
Effective temperature [K] 16784.0 18374.0 19687.0 18110.0 (670) 16817.0 (264)
log(g) [cgs] 7.72 8.00 8.10 8.67 (0.2) 7.93 (0.1)
Mass [M] 0.445 0.594 0.658 0.547 (0.08)
log(Luminosity) [L]
Cooling age [Gyr] 0.0946
log(H/He) <-5.805
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 1.69 (0.4) 1.40 (0.5) 1.69 (0.4)
Distance [pc] 590.01 (129) 711.83 (246) 590.01 (129)
Composition He
Proper motion (right ascension) [mas/yr] -19.6790603 (0.3) -19.21016595 (0.7) -19.679 (0.3) -6.7
Proper motion (declination) [mas/yr] -2.071097877 (0.4) -2.824614187 (0.6) -2.071 (0.4) -5.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.86 (0.03) 19.86 (0.03) 19.89 (0.04) 19.88 19.89 (0.04)
g magnitude 19.92 (0.02) 19.93 (0.01) 19.94 (0.03) 19.94 19.96 (0.03)
r magnitude 20.25 (0.03) 20.25 (0.03) 20.30 (0.03) 20.30 20.30 (0.03)
i magnitude 20.57 (0.05) 20.57 (0.05) 20.58 (0.05) 20.58 20.59 (0.05)
z magnitude 20.96 (0.2) 20.96 (0.2) 20.91 (0.2) 20.91 20.93 (0.2)
G magnitude 20.09 (0.04) 20.17 20.09 (0.005)
BP magnitude 20.04 (0.04) 19.89
RP magnitude 20.17 (0.1) 19.94
Pan g magnitude 19.98 (0.03)
Pan r magnitude 20.27 (0.02)
Pan i magnitude 20.52 (0.04)
Pan z magnitude 20.68 (0.07)
Pan y magnitude
E(B-V) 0.018

* 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.