SDSS J134849.25+203011.3

All names: Gaia EDR3 1250055870793818752, SDSS J134849.25+203011.4, SDSS J134849.25+203011.38, SDSS J134849.25+203011.3, Gaia DR3 1250055870793818752, Gaia DR2 1250055870793591936, SDSS J134849.30+203011.7, GALEX J134849.3+203011, SDSS J134849.29+203011.7

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 13 48 49.22 (0.09) 13 48 49.30 13 48 49.22 (0.1) 13 48 49.22 13 48 49.34 (0.09)
Declination 20 30 11.10 (0.07) 20 30 11.70 20 30 11.13 (0.1) 20 30 11.10 20 30 11.95 (0.07)
Spectral type DB DB DB DB DB
Effective temperature [K] 14009.0 14287.0 12951.0 14487.0 (48) 14832.0 (81) 14026.0 (376)
log(g) [cgs] 7.74 8.07 7.94 8.00 (0) 8.25 (0.06) 8.03 (0.04)
Mass [M] 0.45 0.633 0.553 0.7709999999999999 (0.03) 0.604 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.2836
log(H/He) <-6.509 <-5.73
log(C/He)
log(Ca/He) <-8.35
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] 5.54 (0.1) 5.63 (0.2) 5.54 5.54 (0.1)
Distance [pc] 180.51 (4) 177.51 (5) 187.00 180.51 180.52 (4)
Composition He
Proper motion (right ascension) [mas/yr] -105.4759296 (0.1) -105.524092 (0.3) -105.476 (0.1)
Proper motion (declination) [mas/yr] -52.85986252 (0.08) -52.83698488 (0.2) -52.86 (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 17.60 (0.01) 17.59 (0.01) 17.60 (0.01)
g magnitude 17.63 (0.005) 17.65 (0.02) 17.63 (0.005)
r magnitude 17.92 (0.007) 17.92 (0.02) 17.92 (0.007)
i magnitude 18.15 (0.008) 18.15 (0.01) 18.15 (0.008)
z magnitude 18.37 (0.02) 18.36 (0.03) 18.37 (0.02)
G magnitude 17.78 (0.008) 17.81 17.78 17.78 (0.003)
BP magnitude 17.74 (0.008) 17.72
RP magnitude 17.83 (0.01) 17.82
Pan g magnitude 17.70 (0.005)
Pan r magnitude 17.91 (0.003)
Pan i magnitude 18.14 (0.006)
Pan z magnitude 18.34 (0.005)
Pan y magnitude 18.48 (0.01)
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.