SDSS J232356.56+275545.3

All names: SDSS J232356.55+275545.3, Gaia EDR3 2868885940088090624, Gaia DR2 2868885940088090624, SDSS J232356.56+275545.36, SDSS J232356.56+275545.3, Gaia DR3 2868885940088090624

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 23 56.60 (0.4) 23 23 56.56 23 23 56.60 (0.5) 23 23 56.54 (0.4)
Declination 27 55 45.42 (0.4) 27 55 45.36 27 55 45.42 (0.5) 27 55 45.32 (0.4)
Spectral type DC: DC: DC: DC DC
Effective temperature [K] 6851.0 6640.0 7745.0 (164)
log(g) [cgs] 8.17 8.07 8.00 (0)
Mass [M] 0.695 0.618
log(Luminosity) [L]
Cooling age [Gyr] 2.1580 2.0270
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 4.16 (0.6) 4.64 (0.8) 4.16 (0.6)
Distance [pc] 240.36 (35) 215.52 (39) 240.36 (35)
Composition
Proper motion (right ascension) [mas/yr] 47.3426335 (0.7) 48.46865999 (1) 47.343 (0.7)
Proper motion (declination) [mas/yr] 6.057307047 (0.6) 5.983493693 (1) 6.057 (0.6)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 21.30 (0.08) 21.29 (0.08) 21.30 (0.08)
g magnitude 20.68 (0.02) 20.67 (0.02) 20.67 (0.02)
r magnitude 20.42 (0.03) 20.42 (0.03) 20.42 (0.03)
i magnitude 20.44 (0.04) 20.43 (0.04) 20.43 (0.04)
z magnitude 20.29 (0.1) 20.27 (0.1) 20.28 (0.1)
G magnitude 20.45 (0.08) 20.49 20.45 (0.007)
BP magnitude 20.56 (0.08) 20.58
RP magnitude 20.02 (0.1) 20.22
Pan g magnitude 20.62 (0.03)
Pan r magnitude 20.43 (0.02)
Pan i magnitude 20.39 (0.02)
Pan z magnitude 20.43 (0.02)
Pan y magnitude 20.29 (0.2)
E(B-V) 0.033

* 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.