Ton 22

All names: 2MASS J09435455+2746592, Gaia DR2 648029239761019776, Gaia DR3 648029239761019776, LAMOST J094354.56+274659.5, TIC 233635622, UBV M 43104, Gaia EDR3 648029239761019776, PG 0941+280, GALEX J094354.6+274656, PG0941+280, Ton 22, uvby98 610070022, V* HX Leo, GEN# +6.10070022

Parameter Unit Gaia EDR3 Geier 2020 Stilism Simbad
Right ascension 09 43 54.53 (0.04) 09 43 54.61 09 43 54.55 (0.04)
Declination 27 46 58.52 (0.04) 27 47 01.15 27 46 59.16 (0.04)
Spectral type sdB+WD sdB
Effective temperature [K] 29400.0 (500)
log(g) [cgs] 5.43 (0.05)
Mass [M]
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 1.53 (0.04) 1.50 (0.07) 1.53 (0.04)
Distance [pc] 652.95 (19) 666.13 (32) 652.95 (19)
Composition
Proper motion (right ascension) [mas/yr] -16.922 (0.05) -16.304 (0.2) -16.922 (0.05)
Proper motion (declination) [mas/yr] -39.698 (0.05) -40.508 (0.2) -39.698 (0.05)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 12.95
V magnitude 13.24
R magnitude
I magnitude
J magnitude 13.80 (0.03) 13.80 (0.03)
H magnitude 13.90 (0.04) 13.90 (0.04)
K magnitude 14.00 (0.07) 14.00 (0.07)
u magnitude 12.96 (0.004)
g magnitude 13.30 (0.002)
r magnitude 13.57 (0.004)
i magnitude 13.86 (0.01)
z magnitude 14.17 (0.006)
G magnitude 13.20 (0.003) 13.21 (0.0005) 13.20 (0.003)
BP magnitude 13.06 (0.003) 13.02 (0.009)
RP magnitude 13.46 (0.004) 13.46 (0.002)
Pan g magnitude 13.07
Pan r magnitude 13.49
Pan i magnitude 13.81 (0.003)
Pan z magnitude 14.08 (0.004)
Pan y magnitude 14.24 (0.003)
E(B-V) 0.021

* 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.