SDSS J074558.90+174730.6

All names: Gaia EDR3 668205106333230080, Gaia DR2 668205106333230080, GALEX J074558.8+174730, SDSS J074558.89+174730.5, SDSS J074558.90+174730.6, SDSS J074558.89+174730.6, Gaia DR3 668205106333230080

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 07 45 58.90 (0.4) 07 45 58.90 07 45 58.90 (0.6) 07 45 58.90 (0.4) 07 45 58.90
Declination 17 47 30.60 (0.4) 17 47 30.56 17 47 30.60 (0.5) 17 47 30.65 (0.4) 17 47 30.60
Spectral type DA DA DA DA
Effective temperature [K] 12249.0 13404.0 (560)
log(g) [cgs] 7.57 7.98 (0.1)
Mass [M] 0.392
log(Luminosity) [L]
Cooling age [Gyr] 0.2075
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] 1.35 (0.5) 1.71 (0.7) 1.35 (0.5)
Distance [pc] 738.46 (247) 583.67 (235) 738.44 (247)
Composition H
Proper motion (right ascension) [mas/yr] -3.093465398 (0.5) -2.738320323 (1) -3.093 (0.5)
Proper motion (declination) [mas/yr] -3.227356757 (0.5) -3.205335676 (0.8) -3.227 (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 20.15 (0.04) 20.15 (0.04) 20.18 (0.04)
g magnitude 19.77 (0.01) 19.77 (0.01) 19.78 (0.02)
r magnitude 20.04 (0.02) 20.04 (0.02) 20.04 (0.02)
i magnitude 20.28 (0.04) 20.28 (0.04) 20.23 (0.04)
z magnitude 20.36 (0.1) 20.36 (0.1) 20.46 (0.1)
G magnitude 19.91 (0.07) 19.98 19.91 (0.006)
BP magnitude 19.85 (0.07) 19.73
RP magnitude 20.25 (0.2) 20.00
Pan g magnitude 19.82 (0.009)
Pan r magnitude 20.02 (0.02)
Pan i magnitude 20.29 (0.02)
Pan z magnitude 20.46 (0.05)
Pan y magnitude 20.52 (0.2)
E(B-V) 0.033

* 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.