SDSS J080211.74+425747.8

All names: Gaia EDR3 922800562797653248, Gaia DR3 922800562797653248, SDSS J080211.74+425747.7, J0802+4257, SDSS J080211.74+425747.8, Gaia DR2 922800562797653248, SDSS J080211.73+425747.7, SDSS J080211.74+425747.81

Parameter Unit Gaia EDR3 SDSS DR10 Coutu et al. 2019 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 08 02 11.69 (0.6) 08 02 11.74 08 02 11.74 08 02 11.70 (0.8) 08 02 11.77 (0.6)
Declination 42 57 47.62 (0.5) 42 57 47.78 42 57 47.81 42 57 47.63 (0.8) 42 57 47.92 (0.5)
Spectral type DZ DZ DZ DZ DZ
Effective temperature [K] 6705.0 (230) 10647.0 7606.0 (75)
log(g) [cgs] 7.83 8.84 8.00 (0)
Mass [M] 0.4768 1.121
log(Luminosity) [L]
Cooling age [Gyr] 1.4000 2.0760
log(H/He) <-3.7743
log(C/He)
log(Ca/He) -9.8463 (0.1) -8.818999999999999 (0.07)
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] 4.69 (0.7) 3.99 3.99 (1) 4.69 (0.7)
Distance [pc] 213.36 (32) 250.80 (89) 250.80 (89) 213.36 (32)
Composition He He He
Proper motion (right ascension) [mas/yr] -48.99881633 (0.8) -49.58668913 (2) -48.999 (0.8)
Proper motion (declination) [mas/yr] -19.09614729 (0.5) -18.21258757 (1) -19.096 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 21.23 (0.1) 21.26 (0.1) 21.26 (0.1)
g magnitude 20.49 (0.02) 20.51 (0.02) 20.49 (0.02)
r magnitude 20.33 (0.03) 20.37 (0.03) 20.33 (0.03)
i magnitude 20.33 (0.04) 20.39 (0.04) 20.33 (0.04)
z magnitude 20.93 (0.2) 20.98 (1) 20.94 (0.2)
G magnitude 20.39 (0.1) 20.45 20.39 (0.008)
BP magnitude 20.62 (0.1) 20.55
RP magnitude 20.14 (0.1) 20.11
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.014

* 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.