SDSS J203016.13+765022.7

All names: SDSS J203016.13+765022.7, SDSS J203016.12+765022.6, Gaia DR3 2290326838562227840, GALEX J203016.0+765023, Gaia EDR3 2290326838562227840, Gaia DR2 2290326838562227840, SDSS J203016.10+765022.6

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 20 30 16.04 (0.5) 20 30 16.11 20 30 16.04 (0.6) 20 30 16.15 (0.5) 20 30 16.13
Declination 76 50 22.70 (0.4) 76 50 22.65 76 50 22.70 (0.6) 76 50 22.66 (0.4) 76 50 22.67
Spectral type DA DAH DAH DAH DA
Effective temperature [K] 12594.2 (252) 8525.0 13277.0 (1567)
log(g) [cgs] (0.2) 5.90 7.72 (0.3)
Mass [M] 0.2344025627505209 (0.1) 0.036
log(Luminosity) [L]
Cooling age [Gyr]
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] 2.08 (0.4) 1.10 (0.5) 2.08 (0.4)
Distance [pc] 480.25 (93) 909.39 (442) 480.24 (93)
Composition H
Proper motion (right ascension) [mas/yr] -23.78771329 (0.6) -22.0421912 (1) -23.788 (0.6)
Proper motion (declination) [mas/yr] 2.412464774 (0.5) 3.306271423 (1) 2.412 (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 20.89 (0.1) 20.89 (0.1) 21.03 (0.1)
g magnitude 20.28 (0.02) 20.28 (0.02) 20.31 (0.02)
r magnitude 20.31 (0.04) 20.31 (0.04) 20.35 (0.04)
i magnitude 20.48 (0.07) 20.48 (0.07) 20.37 (0.05)
z magnitude 20.53 (0.3) 20.53 (0.3) 21.03 (0.4)
G magnitude 20.28 (0.08) 20.34 20.28 (0.006)
BP magnitude 20.36 (0.08) 20.54
RP magnitude 19.94 (0.08) 20.07
Pan g magnitude 20.30 (0.02)
Pan r magnitude 20.31 (0.02)
Pan i magnitude 20.48 (0.04)
Pan z magnitude 20.54 (0.07)
Pan y magnitude 20.06 (0.2)
E(B-V) 0.167

* 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.