SDSS J120957.74+203616.1

All names: GALEX J120957.8+203616, Gaia DR3 3951666161984713216, SDSS J120957.74+203616.1, SDSS J120957.73+203616.0, SDSS J120957.74+203616.0, Gaia EDR3 3951666161984713216, Gaia DR2 3951666161984713216

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 12 09 57.71 (0.3) 12 09 57.74 12 09 57.71 (0.4) 12 09 57.76 (0.3) 12 09 57.74
Declination 20 36 16.21 (0.2) 20 36 16.03 20 36 16.20 (0.2) 20 36 15.92 (0.2) 20 36 16.08
Spectral type DA DA DA DA
Effective temperature [K] 17817.0 18188.0 (230)
log(g) [cgs] 8.25 7.92 (0.04)
Mass [M] 0.772 0.579 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.1775
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] 2.33 (0.3) 2.47 (0.4) 2.33 (0.3)
Distance [pc] 428.79 (57) 404.99 (62) 428.78 (57)
Composition H
Proper motion (right ascension) [mas/yr] -43.33749085 (0.4) -43.37158078 (0.8) -43.337 (0.4)
Proper motion (declination) [mas/yr] 18.17093961 (0.2) 18.08222225 (0.5) 18.171 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.39 (0.03) 19.39 (0.03) 19.40 (0.03)
g magnitude 19.25 (0.01) 19.25 (0.01) 19.27 (0.03)
r magnitude 19.59 (0.02) 19.59 (0.02) 19.61 (0.02)
i magnitude 19.87 (0.03) 19.87 (0.03) 19.87 (0.03)
z magnitude 20.07 (0.09) 20.07 (0.09) 20.08 (0.09)
G magnitude 19.43 (0.04) 19.48 19.43 (0.004)
BP magnitude 19.42 (0.04) 19.31
RP magnitude 19.66 (0.07) 19.43
Pan g magnitude 19.28 (0.01)
Pan r magnitude 19.59 (0.01)
Pan i magnitude 19.90 (0.02)
Pan z magnitude 20.17 (0.03)
Pan y magnitude 19.91 (0.1)
E(B-V) 0.019

* 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.