SDSS J102701.87+583142.6

All names: SDSS J102701.87+583142.6, GALEX J102701.9+583143, SDSS J102701.87+583142.64, Gaia EDR3 1047250843675453568, SDSS J102701.89+583143.1, Gaia DR2 1047250843675453568, Gaia DR3 1047250843675453568

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 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 10 27 01.88 (0.1) 10 27 01.89 10 27 01.88 (0.1) 10 27 01.88 10 27 01.90 (0.1)
Declination 58 31 42.67 (0.1) 58 31 43.15 58 31 42.69 (0.2) 58 31 42.67 58 31 43.14 (0.1)
Spectral type DB DB DB DB DB
Effective temperature [K] 13002.0 13051.0 12389.0 13235.0 (161) 12435.0 (92) 12858.0 (462)
log(g) [cgs] 8.13 8.07 7.99 8.49 (0.1) 8.00 (0) 8.12 (0.06)
Mass [M] 0.667 0.627 0.581 0.893 (0.08) 0.659 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 0.3466
log(H/He) -5.885 -5.55 (0.4)
log(C/He)
log(Ca/He) <-9.64
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] 4.08 (0.2) 3.89 (0.3) 4.08 4.08 (0.2)
Distance [pc] 245.03 (10) 256.97 (17) 251.00 245.03 245.03 (10)
Composition He
Proper motion (right ascension) [mas/yr] -9.004956918 (0.1) -9.1214511 (0.3) -9.005 (0.1)
Proper motion (declination) [mas/yr] -29.00789886 (0.2) -28.94229402 (0.3) -29.008 (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 18.64 (0.02) 18.63 (0.02) 18.64 (0.02)
g magnitude 18.63 (0.008) 18.66 (0.02) 18.63 (0.008)
r magnitude 18.91 (0.01) 18.92 (0.02) 18.91 (0.01)
i magnitude 19.10 (0.01) 19.10 (0.02) 19.10 (0.01)
z magnitude 19.26 (0.05) 19.25 (0.05) 19.25 (0.05)
G magnitude 18.76 (0.01) 18.80 18.76 18.76 (0.003)
BP magnitude 18.74 (0.01) 18.72
RP magnitude 18.82 (0.02) 18.80
Pan g magnitude 18.70 (0.004)
Pan r magnitude 18.89 (0.006)
Pan i magnitude 19.08 (0.009)
Pan z magnitude 19.33 (0.03)
Pan y magnitude 19.42 (0.03)
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.