SDSS J083024.17+455206.0

All names: Gaia EDR3 918090663005393024, SDSS J083024.20+455205.8, SDSS J083024.17+455206.0, Gaia DR2 918090663005393024, GALEX J083024.2+455205, SDSS J083024.17+455206.02, SDSS J083024.19+455205.8, Gaia DR3 918090663005393024

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 Simbad Vincent et al. 2023
Right ascension 08 30 24.17 (0.2) 08 30 24.20 08 30 24.17 (0.3) 08 30 24.20 (0.2)
Declination 45 52 06.04 (0.2) 45 52 05.85 45 52 06.03 (0.2) 45 52 05.77 (0.2)
Spectral type DBA DBA DBA DB
Effective temperature [K] 14546.0 15272.0 12402.0 14836.0 (73) 15157.0 (120)
log(g) [cgs] 7.97 7.73 7.42 8.00 (0) 8.19 (0.09)
Mass [M] 0.57 0.448 0.315 0.7390000000000001 (0.06)
log(Luminosity) [L]
Cooling age [Gyr] 0.1881
log(H/He) -5.296 -5.08 (0.3)
log(C/He)
log(Ca/He) <-7.58
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] 2.52 (0.3) 2.30 (0.4) 2.52 (0.3)
Distance [pc] 396.42 (42) 435.35 (68) 354.00 396.42 (42)
Composition He
Proper motion (right ascension) [mas/yr] -22.06825458 (0.3) -21.54647486 (0.5) -22.068 (0.3)
Proper motion (declination) [mas/yr] 16.52224038 (0.3) 16.8220451 (0.5) 16.522 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.96 (0.02) 18.95 (0.02) 18.96 (0.02)
g magnitude 19.00 (0.009) 19.00 (0.02) 19.00 (0.009)
r magnitude 19.28 (0.01) 19.27 (0.02) 19.28 (0.01)
i magnitude 19.50 (0.02) 19.49 (0.02) 19.50 (0.02)
z magnitude 19.72 (0.07) 19.71 (0.07) 19.72 (0.07)
G magnitude 19.12 (0.03) 19.17 19.12 (0.004)
BP magnitude 19.14 (0.03) 18.99
RP magnitude 19.25 (0.06) 19.18
Pan g magnitude 19.05 (0.01)
Pan r magnitude 19.26 (0.009)
Pan i magnitude 19.41 (0.02)
Pan z magnitude 19.67 (0.03)
Pan y magnitude 19.82 (0.08)
E(B-V) 0.026

* 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.