SDSS J120203.13+285647.0

All names: SDSS J120203.13+285647.1, SDSS J120203.13+285647.07, Gaia EDR3 4007906731501303424, Gaia DR3 4007906731501303424, SDSS J120203.12+285647.1, GALEX J120203.1+285648, Gaia DR2 4007906731501303424, SDSS J120203.13+285647.0

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Koester & Kepler 2015 Simbad Vincent et al. 2023
Right ascension 12 02 03.14 (0.3) 12 02 03.13 12 02 03.14 (0.4) 12 02 03.13 (0.3)
Declination 28 56 47.06 (0.2) 28 56 47.11 28 56 47.06 (0.2) 28 56 47.13 (0.2)
Spectral type DB DB DB DB
Effective temperature [K] 17179.0 16043.0 15916.0 33154.0 (569) 17294.0 (153)
log(g) [cgs] 8.16 7.56 7.58 7.86 (0.07) 8.16 (0.09)
Mass [M] 0.69 0.377 0.387 0.5489999999999999 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.0916
log(H/He) -5.231 <-4.69
log(C/He)
log(Ca/He) <-5.69
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] 2.07 (0.3) 1.84 (0.4) 2.07 (0.3)
Distance [pc] 483.96 (60) 542.41 (111) 386.00 483.96 (60)
Composition He
Proper motion (right ascension) [mas/yr] 9.796194128 (0.3) 9.399463614 (0.6) 9.796 (0.3)
Proper motion (declination) [mas/yr] -4.642934185 (0.2) -4.095882481 (0.4) -4.643 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.98 (0.02) 18.98 (0.04) 18.98 (0.02)
g magnitude 19.05 (0.01) 19.07 (0.03) 19.06 (0.01)
r magnitude 19.38 (0.01) 19.40 (0.02) 19.39 (0.01)
i magnitude 19.59 (0.02) 19.57 (0.04) 19.59 (0.02)
z magnitude 19.83 (0.08) 19.79 (0.08) 19.83 (0.08)
G magnitude 19.20 (0.02) 19.25 19.20 (0.004)
BP magnitude 19.14 (0.02) 19.16
RP magnitude 19.27 (0.04) 19.41
Pan g magnitude 19.09 (0.01)
Pan r magnitude 19.37 (0.004)
Pan i magnitude 19.65 (0.01)
Pan z magnitude 19.87 (0.01)
Pan y magnitude 19.71 (0.1)
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.