SDSS J021520.77+305302.2

All names: SDSS J021520.76+305302.1, SDSS J021520.77+305302.2, Gaia DR3 324368574577848064, SDSS J021520.77+305302.20, Gaia EDR3 324368574577848064, Gaia DR2 324368574577848064

Parameter Unit Gaia EDR3 SDSS DR12 MWDD H Gaia DR2 Stilism Kepler et al. 2016 Simbad Vincent et al. 2023
Right ascension 02 15 20.78 (0.7) 02 15 20.77 02 15 20.78 (0.8) 02 15 20.77 (0.7)
Declination 30 53 02.14 (0.7) 30 53 02.19 30 53 02.15 (0.8) 30 53 02.65 (0.7)
Spectral type DA DA DA DA
Effective temperature [K] 16300.0 9342.0 (122)
log(g) [cgs] 9.15 8.05 (0.2)
Mass [M] 1.257 0.507 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 1.0660
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 3.51 (1) 3.40 (1) 3.51 (1)
Distance [pc] 284.54 (77) 294.07 (93) 284.54 (77)
Composition H
Proper motion (right ascension) [mas/yr] 13.58317462 (0.8) 10.88246588 (2) 13.583 (0.8)
Proper motion (declination) [mas/yr] -32.31410539 (0.9) -32.78061829 (2) -32.314 (0.9)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 21.28 (0.2) 21.21 (0.1) 21.21 (0.1)
g magnitude 20.47 (0.03) 20.56 (0.03) 20.56 (0.03)
r magnitude 20.50 (0.06) 20.59 (0.06) 20.59 (0.06)
i magnitude 20.48 (0.09) 20.61 (0.09) 20.61 (0.09)
z magnitude 21.42 (0.7) 21.43 (0.6)
G magnitude 20.44 (0.1) 20.50 20.44 (0.009)
BP magnitude 20.60 (0.1) 20.66
RP magnitude 20.14 (0.1) 20.42
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.080

* 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.