SDSS J230408.42+075524.9

All names: SDSS J230408.42+075524.93, Gaia DR3 2713527043026574080, Gaia DR2 2713527043026574080, SDSS J230408.42+075524.9, Gaia EDR3 2713527043026574080, SDSS J230408.41+075524.9, GALEX J230408.3+075524

Parameter Unit Gaia EDR3 SDSS DR12 MWDD H Gaia DR2 Stilism Kepler et al. 2016 Simbad Vincent et al. 2023
Right ascension 23 04 08.49 (0.3) 23 04 08.42 23 04 08.48 (0.5) 23 04 08.39 (0.3)
Declination 07 55 25.34 (0.3) 07 55 24.94 07 55 25.32 (0.4) 07 55 24.74 (0.3)
Spectral type DA DA DA DA
Effective temperature [K] 6731.0 7221.0 (89)
log(g) [cgs] 8.08 7.76 (0.2)
Mass [M] 0.638 0.441 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 1.9160
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] 5.80 (0.4) 6.57 (0.6) 5.80 (0.4)
Distance [pc] 172.36 (12) 152.24 (14) 172.36 (12)
Composition H
Proper motion (right ascension) [mas/yr] 93.47849445 (0.4) 92.35946023 (0.8) 93.478 (0.4)
Proper motion (declination) [mas/yr] 37.14849624 (0.4) 35.79857238 (0.7) 37.148 (0.4)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.33 (0.05) 20.37 (0.05) 20.32 (0.05)
g magnitude 19.68 (0.01) 19.78 (0.03) 19.68 (0.01)
r magnitude 19.52 (0.02) 19.67 (0.02) 19.52 (0.02)
i magnitude 19.46 (0.02) 19.59 (0.03) 19.45 (0.02)
z magnitude 19.35 (0.07) 19.52 (0.07) 19.34 (0.07)
G magnitude 19.62 (0.07) 19.67 19.62 (0.005)
BP magnitude 19.83 (0.07) 19.81
RP magnitude 19.25 (0.05) 19.15
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.031

* Constant surface field

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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.