SDSS J221512.18+213905.5

All names: SDSS J221512.18+213905.5, Gaia DR3 1781896688895465344, GALEX J221512.1+213905, Gaia DR2 1781896688895465344, SDSS J221512.19+213905.5, SDSS J221512.18+213905.4, Gaia EDR3 1781896688895465344

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 22 15 12.19 (0.06) 22 15 12.18 22 15 12.19 (0.08) 22 15 12.19 22 15 12.18 (0.06) 22 15 12.19
Declination 21 39 05.37 (0.06) 21 39 05.50 21 39 05.37 (0.09) 21 39 05.37 21 39 05.52 (0.06) 21 39 05.51
Spectral type DA DA DA DA DA DA
Effective temperature [K] 42384.0 (302) 29135.0 47451.0 (5069) 42568.0 (360)
log(g) [cgs] 7.82 (0.03) 7.55 8.05 (0.06) 7.90 (0.04)
Mass [M] 0.59 (0.01) 0.442 0.709 (0.04) 0.622 (0.02)
log(Luminosity) [L] -0.15 (0.02)
Cooling age [Gyr] 0.0032 (0.0001) 0.0104
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] 4.17 (0.07) 4.06 (0.1) 4.17 4.17 (0.07)
Distance [pc] 240.04 (4) 246.01 (6) 240.04 240.04 (4)
Composition H H
Proper motion (right ascension) [mas/yr] 7.984479872 (0.07) 8.073711281 (0.2) 7.984 (0.07)
Proper motion (declination) [mas/yr] -9.41328933 (0.07) -9.433319426 (0.2) -9.413 (0.07)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 15.61 (0.005) 15.61 (0.005) 15.60 (0.01)
g magnitude 15.99 (0.004) 15.99 (0.004) 16.00 (0.01)
r magnitude 16.48 (0.005) 16.48 (0.005) 16.48 (0.01)
i magnitude 16.84 (0.006) 16.84 (0.006) 16.83 (0.01)
z magnitude 17.14 (0.01) 17.14 (0.01) 17.15 (0.02)
G magnitude 16.24 (0.006) 16.27 16.24 16.24 (0.003)
BP magnitude 16.10 (0.006) 16.05
RP magnitude 16.54 (0.01) 16.54
Pan g magnitude 16.07 (0.001)
Pan r magnitude 16.52 (0.006)
Pan i magnitude 16.87 (0.004)
Pan z magnitude 17.16 (0.004)
Pan y magnitude 17.36 (0.01)
E(B-V) 0.030

* 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.