SDSS J084756.97+171253.8

All names: Gaia DR3 659796861741490688, GALEX J084756.9+171254, SDSS J084756.96+171253.7, Gaia EDR3 659796861741490688, SDSS J084756.97+171253.8, Gaia DR2 659796861741490688

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 47 56.98 (0.3) 08 47 56.97 08 47 56.98 (0.4) 08 47 56.97 (0.3) 08 47 56.97
Declination 17 12 53.67 (0.2) 17 12 53.74 17 12 53.67 (0.2) 17 12 53.83 (0.2) 17 12 53.77
Spectral type DA DA DA DA
Effective temperature [K] 11563.0 12347.0 (284)
log(g) [cgs] 7.68 7.95 (0.1)
Mass [M☉] 0.438 0.58 (0.06)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.2778
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] 2.83 (0.3) 2.39 (0.5) 2.83 (0.3)
Distance [pc] 353.95 (42) 418.79 (88) 353.94 (42)
Composition H
Proper motion (right ascension) [mas/yr] 9.016791019 (0.3) 8.160154161 (0.8) 9.017 (0.3)
Proper motion (declination) [mas/yr] -10.08859744 (0.3) -9.481064472 (0.5) -10.089 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.83 (0.03) 19.83 (0.03) 19.80 (0.03)
g magnitude 19.40 (0.01) 19.40 (0.01) 19.41 (0.02)
r magnitude 19.55 (0.01) 19.55 (0.01) 19.55 (0.02)
i magnitude 19.78 (0.02) 19.78 (0.02) 19.78 (0.02)
z magnitude 19.99 (0.1) 19.99 (0.1) 19.98 (0.1)
G magnitude 19.46 (0.04) 19.50 19.46 (0.004)
BP magnitude 19.52 (0.04) 19.49
RP magnitude 19.58 (0.05) 19.37
Pan g magnitude 19.38 (0.01)
Pan r magnitude 19.52 (0.01)
Pan i magnitude 19.76 (0.02)
Pan z magnitude 19.99 (0.02)
Pan y magnitude 20.04 (0.08)
E(B-V) 0.022

* 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.