SDSS J030941.17+403849.0

All names: Gaia DR2 239089799893131392, SDSS J030941.16+403849.0, SDSS J030941.17+403849.00, Gaia EDR3 239089799893131392, SDSS J030941.17+403849.0, Gaia DR3 239089799893131392

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 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 03 09 41.17 (0.4) 03 09 41.17 03 09 41.17 (0.7) 03 09 41.17 (0.4) 03 09 41.17
Declination 40 38 49.01 (0.4) 40 38 49.09 40 38 49.01 (0.5) 40 38 49.11 (0.4) 40 38 49.03
Spectral type DBA DBA DBA DB+MS
Effective temperature [K] 16835.0 14178.0 11535.0 16975.0 (292)
log(g) [cgs] 8.38 7.92 7.60 8.29 (0.2)
Mass [M] 0.828 0.542 0.381
log(Luminosity) [L]
Cooling age [Gyr] 0.2656
log(H/He) -5.057
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] 1.51 (0.7) 1.94 (1) 1.51 (0.7)
Distance [pc] 661.39 (290) 514.90 (261) 661.38 (290)
Composition He
Proper motion (right ascension) [mas/yr] 0.328107306 (0.7) 1.600188559 (2) 0.328 (0.7)
Proper motion (declination) [mas/yr] -6.138694296 (0.5) -3.625119395 (1) -6.139 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.00 (0.03) 20.00 (0.03) 19.95 (0.04)
g magnitude 19.98 (0.01) 19.98 (0.01) 19.97 (0.02)
r magnitude 20.17 (0.02) 20.18 (0.02) 20.14 (0.03)
i magnitude 20.35 (0.03) 20.35 (0.03) 20.38 (0.04)
z magnitude 20.65 (0.1) 20.23 (0.1) 20.23 (0.1)
G magnitude 20.04 (0.06) 20.10 20.04 (0.006)
BP magnitude 20.05 (0.06) 19.91
RP magnitude 20.08 (0.08) 20.20
Pan g magnitude 19.99 (0.02)
Pan r magnitude 20.19 (0.01)
Pan i magnitude 20.36 (0.01)
Pan z magnitude 20.45 (0.06)
Pan y magnitude
E(B-V) 0.126

* 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.