SDSS J225538.94+021903.7

All names: SDSS J225538.93+021903.7, Gaia DR2 2655773579870187136, Gaia DR3 2655773579870187136, SDSS J225538.94+021903.78, Gaia EDR3 2655773579870187136, GALEX J225538.8+021903, SDSS J225538.94+021903.7

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 22 55 38.95 (0.3) 22 55 38.93 22 55 38.95 (0.3) 22 55 38.91 (0.3)
Declination 02 19 03.35 (0.2) 02 19 03.78 02 19 03.38 (0.3) 02 19 04.27 (0.2)
Spectral type DC DC DC DC DC
Effective temperature [K] 7099.0 6874.0 12649.0 (1000)
log(g) [cgs] 8.28 8.20 7.61 (0.5)
Mass [M] 0.772 0.697
log(Luminosity) [L]
Cooling age [Gyr] 2.5860 2.4430
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 7.56 (0.3) 7.51 (0.4) 7.56 (0.3)
Distance [pc] 132.21 (5) 133.12 (7) 132.21 (5)
Composition
Proper motion (right ascension) [mas/yr] 44.71623256 (0.3) 45.2779361 (0.7) 44.716 (0.3)
Proper motion (declination) [mas/yr] -57.22639707 (0.3) -57.05789009 (0.6) -57.226 (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 20.23 (0.05) 20.23 (0.05) 20.23 (0.05)
g magnitude 19.63 (0.01) 19.63 (0.01) 19.63 (0.01)
r magnitude 19.39 (0.01) 19.39 (0.01) 19.39 (0.01)
i magnitude 19.51 (0.02) 19.51 (0.02) 19.51 (0.02)
z magnitude 19.45 (0.06) 19.45 (0.06) 19.45 (0.06)
G magnitude 19.44 (0.06) 19.47 19.44 (0.005)
BP magnitude 19.82 (0.06) 19.65
RP magnitude 19.40 (0.09) 19.22
Pan g magnitude 19.59 (0.009)
Pan r magnitude 19.45 (0.009)
Pan i magnitude 19.43 (0.006)
Pan z magnitude 19.42 (0.008)
Pan y magnitude 19.64 (0.07)
E(B-V) 0.026

* 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.