SDSS J081507.03+241638.5

All names: GALEX J081507.0+241639, Gaia DR2 677770921918573184, SDSS J081507.03+241638.50, Gaia DR3 677770921918573184, Gaia EDR3 677770921918573184, SDSS J081507.03+241638.5

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
Right ascension 08 15 07.02 (0.9) 08 15 07.03 08 15 07.02 (1) 08 15 07.02 (0.9) 08 15 07.03
Declination 24 16 38.47 (0.7) 24 16 38.45 24 16 38.47 (0.9) 24 16 38.53 (0.7) 24 16 38.50
Spectral type DBA: DBA DBA:
Effective temperature [K] 20410.0 22392.0 12470.0 19370.0 (1742)
log(g) [cgs] 8.94 8.28 7.55 8.66 (0.4)
Mass [M] 1.162 0.774 0.363
log(Luminosity) [L]
Cooling age [Gyr] 0.2019
log(H/He) -4.542
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] 1.61 (1) 1.25 (1) 1.61 (1)
Distance [pc] 621.20 (451) 802.85 (916) 621.20 (451)
Composition He
Proper motion (right ascension) [mas/yr] 1.723092122 (1) 4.375751178 (3) 1.723 (1)
Proper motion (declination) [mas/yr] -3.469801268 (0.8) -4.338359312 (2) -3.47 (0.8)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.33 (0.06) 20.34 (0.07) 20.34 (0.07)
g magnitude 20.41 (0.02) 20.41 (0.03) 20.41 (0.03)
r magnitude 20.79 (0.05) 20.78 (0.05) 20.78 (0.05)
i magnitude 21.01 (0.08) 21.02 (0.08) 21.02 (0.08)
z magnitude 21.18 (0.3) 21.21 (0.4) 21.21 (0.4)
G magnitude 20.60 (0.09) 20.73 20.60 (0.01)
BP magnitude 20.26 (0.09) 20.40
RP magnitude 20.52 (0.1) 20.28
Pan g magnitude 20.51 (0.04)
Pan r magnitude 20.76 (0.02)
Pan i magnitude 20.95 (0.04)
Pan z magnitude 21.14 (0.1)
Pan y magnitude 20.60 (0.2)
E(B-V) 0.035

* 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.