SDSS J230420.71+261132.2

All names: Gaia EDR3 2843892528959252608, Gaia DR2 2843892528959252608, SDSS J230420.71+261132.1, Gaia DR3 2843892528959252608, SDSS J230420.72+261132.19, SDSS J230420.71+261132.2, SDSS J230420.72+261132.1, SDSS J230420.70+261132.2, GALEX J230420.6+261132

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2016 Vincent et al. 2024 Simbad Vincent et al. 2023
Right ascension 23 04 20.72 (0.2) 23 04 20.71 23 04 20.72 (0.3) 23 04 20.72 23 04 20.70 (0.2)
Declination 26 11 32.09 (0.2) 26 11 32.22 26 11 32.10 (0.2) 26 11 32.09 26 11 32.24 (0.2)
Spectral type DC DC DC DA DC DA
Effective temperature [K] 9309.0 9117.0 10938.0 (174) 9076.0 (441)
log(g) [cgs] 8.36 8.29 8.00 (0) 8.43 (0.09)
Mass [M] 0.828 0.765 0.874 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 1.3010 1.2100
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 6.44 (0.3) 5.91 (0.4) 6.44 6.44 (0.3)
Distance [pc] 155.16 (7) 169.08 (11) 155.16 155.16 (7)
Composition
Proper motion (right ascension) [mas/yr] 20.37939999 (0.3) 20.83388941 (0.5) 20.379 (0.3)
Proper motion (declination) [mas/yr] -9.278064155 (0.3) -9.066571152 (0.5) -9.278 (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 19.33 (0.02) 19.31 (0.03) 19.32 (0.02)
g magnitude 19.16 (0.01) 19.17 (0.01) 19.16 (0.01)
r magnitude 19.20 (0.01) 19.20 (0.01) 19.20 (0.01)
i magnitude 19.33 (0.02) 19.33 (0.02) 19.32 (0.02)
z magnitude 19.54 (0.06) 19.51 (0.05) 19.53 (0.06)
G magnitude 19.13 (0.03) 19.16 19.13 19.13 (0.004)
BP magnitude 19.27 (0.03) 19.23
RP magnitude 19.01 (0.04) 19.00
Pan g magnitude 19.15 (0.01)
Pan r magnitude 19.19 (0.01)
Pan i magnitude 19.29 (0.009)
Pan z magnitude 19.44 (0.05)
Pan y magnitude 19.51 (0.05)
E(B-V) 0.017

* 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.