SDSS J230559.60+080430.4

All names: SDSS J230559.60+080430.4, SDSS J230559.61+080430.7, GALEX J230559.5+080431, Gaia EDR3 2713580712938324480, SDSS J230559.62+080430.9, SDSS J230559.60+080430.43, Gaia DR3 2713580712938324480, Gaia DR2 2713580712938324480

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Simbad Vincent et al. 2023
Right ascension 23 05 59.58 (0.4) 23 05 59.63 23 05 59.58 (0.5) 23 05 59.65 (0.4)
Declination 08 04 30.24 (0.2) 08 04 30.97 08 04 30.28 (0.3) 08 04 31.37 (0.2)
Spectral type DC DC DC DC DC:
Effective temperature [K] 9917.0 9875.0 10821.0 (185)
log(g) [cgs] 8.13 8.06 8.00 (0)
Mass [M] 0.682 0.619
log(Luminosity) [L]
Cooling age [Gyr] 0.7482 0.7076
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 4.19 (0.4) 4.24 (0.6) 4.19 (0.4)
Distance [pc] 238.90 (21) 235.70 (36) 238.90 (21)
Composition
Proper motion (right ascension) [mas/yr] -65.86853943 (0.5) -65.90295915 (0.8) -65.869 (0.5)
Proper motion (declination) [mas/yr] -70.30498757 (0.3) -70.0660545 (0.6) -70.305 (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 19.39 (0.03) 19.39 (0.03) 19.39 (0.03)
g magnitude 19.24 (0.01) 19.25 (0.01) 19.24 (0.01)
r magnitude 19.35 (0.01) 19.34 (0.02) 19.35 (0.01)
i magnitude 19.47 (0.02) 19.46 (0.02) 19.46 (0.02)
z magnitude 19.73 (0.07) 19.70 (0.07) 19.72 (0.07)
G magnitude 19.25 (0.03) 19.29 19.25 (0.005)
BP magnitude 19.29 (0.03) 19.21
RP magnitude 19.40 (0.1) 19.28
Pan g magnitude 19.27 (0.007)
Pan r magnitude 19.33 (0.008)
Pan i magnitude 19.49 (0.009)
Pan z magnitude 19.62 (0.02)
Pan y magnitude 19.80 (0.05)
E(B-V) 0.041

* 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.