SDSS J221835.54+295614.3

All names: SDSS J221835.54+295614.31, Gaia EDR3 1894325940428773120, Gaia DR3 1894325940428773120, SDSS J221835.54+295614.3, Gaia DR2 1894325940428773120

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Gaia DR2 Kepler et al. 2016 Simbad
Right ascension 22 18 35.54 (0.3) 22 18 35.54 22 18 35.54 (0.3) 22 18 35.54 (0.3)
Declination 29 56 14.29 (0.2) 29 56 14.31 29 56 14.29 (0.4) 29 56 14.30 (0.2)
Spectral type sdA sdA
Effective temperature [K] 7906.0 (57)
log(g) [cgs] 6.22 (0.2)
Mass [M☉] 0.15425 (0.003)
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] -0.28 (0.4) -0.42 (0.5)
Distance [pc]
Composition
Proper motion (right ascension) [mas/yr] -0.434010656 (0.3) -0.157043247 (0.8) -0.434 (0.3)
Proper motion (declination) [mas/yr] -0.548979616 (0.3) -0.318578806 (0.7) -0.549 (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 20.93 (0.08) 20.89 (0.07) 20.89 (0.07)
g magnitude 19.76 (0.01) 19.78 (0.03) 19.78 (0.03)
r magnitude 19.65 (0.02) 19.64 (0.02) 19.64 (0.02)
i magnitude 19.69 (0.02) 19.68 (0.02) 19.68 (0.02)
z magnitude 19.68 (0.09) 19.66 (0.08) 19.66 (0.08)
G magnitude 19.66 (0.03) 19.71 19.66 (0.004)
BP magnitude 19.83 (0.03) 19.86
RP magnitude 19.37 (0.05) 19.46
Pan g magnitude 19.78 (0.01)
Pan r magnitude 19.72 (0.02)
Pan i magnitude 19.72 (0.01)
Pan z magnitude 19.71 (0.03)
Pan y magnitude 19.76 (0.01)
E(B-V)

* 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.