SDSS J163944.63+383346.9

All names: GALEX J163944.6+383347, Gaia DR2 1331560292643238272, SDSS J163944.63+383346.8, Gaia EDR3 1331560292643238272, SDSS J163944.64+383346.8, SDSS J163944.63+383346.9, Gaia DR3 1331560292643238272, SDSS J163944.64+383346.84

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 16 39 44.63 (0.06) 16 39 44.63 16 39 44.63 (0.09) 16 39 44.63 16 39 44.63 (0.06)
Declination 38 33 46.66 (0.07) 38 33 46.95 38 33 46.67 (0.09) 38 33 46.66 38 33 46.96 (0.07)
Spectral type DA DA DA DA DA
Effective temperature [K] 28497.0 30128.0 (105) 29753.0 (1353)
log(g) [cgs] 7.87 8.00 (0.02) 8.00 (0.05)
Mass [M] 0.573 0.643 (0.01) 0.646 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.0106
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] 3.10 (0.08) 2.86 (0.1) 3.10 3.10 (0.08)
Distance [pc] 322.14 (8) 350.04 (12) 322.14 322.13 (8)
Composition H
Proper motion (right ascension) [mas/yr] 2.012962685 (0.08) 2.208603869 (0.2) 2.013 (0.08)
Proper motion (declination) [mas/yr] -18.37720277 (0.09) -18.65694341 (0.2) -18.377 (0.09)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.13 (0.008) 17.14 (0.02) 17.13 (0.008)
g magnitude 17.32 (0.005) 17.34 (0.02) 17.32 (0.005)
r magnitude 17.78 (0.006) 17.78 (0.02) 17.78 (0.006)
i magnitude 18.13 (0.008) 18.12 (0.02) 18.13 (0.008)
z magnitude 18.45 (0.03) 18.46 (0.03) 18.45 (0.03)
G magnitude 17.57 (0.007) 17.61 17.57 17.57 (0.003)
BP magnitude 17.45 (0.007) 17.39
RP magnitude 17.85 (0.02) 17.80
Pan g magnitude 17.40 (0.004)
Pan r magnitude 17.81 (0.005)
Pan i magnitude 18.17 (0.004)
Pan z magnitude 18.45 (0.01)
Pan y magnitude 18.69 (0.01)
E(B-V) 0.018

* 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.