SDSS J081828.12+124717.2

All names: SDSS J081828.12+124717.2, Gaia DR3 650350854268722560, Gaia DR2 650350854268722560, J0818+1247, Gaia EDR3 650350854268722560

Parameter Unit Gaia EDR3 SDSS DR14 Blouin 2020 Coutu et al. 2019 Hollands et al. 2017 Stilism Simbad
Right ascension 08 18 28.12 (2) 08 18 28.13 08 18 28.13 08 18 28.12 (2)
Declination 12 47 16.96 (1) 12 47 17.23 12 47 17.23 12 47 16.96 (1)
Spectral type DZ DZ DZ DZ
Effective temperature [K] 6895.0 (279) 6872.0 (264) 6810.0 (270)
log(g) [cgs] 8.00 8.00
Mass [M]
log(Luminosity) [L]
Cooling age [Gyr] 0.0000 2.1000
log(H/He) <-3.7959
log(C/He)
log(Ca/He) -9.0 (0.3) -9.0348 (0.4) -8.58
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He) -7.2 (0.3) -7.87
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) -7.8 (0.4) -7.77
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas]
Distance [pc] 310.57 (19) 294.00 (41)
Composition He He He
Proper motion (right ascension) [mas/yr]
Proper motion (declination) [mas/yr]
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 22.11 (0.2) 22.06 (0.2) 22.06 (0.2) 22.13 (0.2)
g magnitude 21.01 (0.03) 21.00 (0.03) 21.00 (0.03) 20.96 (0.03)
r magnitude 20.87 (0.04) 20.85 (0.04) 20.85 (0.04) 20.75 (0.04)
i magnitude 21.02 (0.06) 21.02 (0.06) 21.02 (0.06) 21.01 (0.07)
z magnitude 21.24 (0.3) 21.23 (0.3) 21.23 (0.3) 21.05 (0.3)
G magnitude 20.82 (0.2) 20.82 (0.01)
BP magnitude 20.93 (0.2)
RP magnitude 20.34 (0.09)
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.017

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.