Ton S 5

All names: Ton S 5, GALEX J204812.3-281704, USNO-B1.0 0617-00953996, Gaia DR3 6795812407549550080, EC20451-2828, BPS CS 30336-0019, Gaia DR2 6795812407549550080, TIC 1992495975, TIC 471013483, EC 20451-2828

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 20 48 12.44 20 48 12.34 (0.05)
Declination -28 17 05.46 -28 17 05.54 (0.03)
Spectral type He-sdO sdOHe/DO
Effective temperature [K]
log(g) [cgs]
Mass [M]
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.15 (0.08) 0.23 (0.06)
Distance [pc] 6657.79 (3511) 4347.83 (1047)
Composition
Proper motion (right ascension) [mas/yr] 2.965 (0.1) 3.149 (0.05)
Proper motion (declination) [mas/yr] -2.122 (0.1) -1.929 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.88
V magnitude 16.03
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.10 (0.001) 16.07 (0.003)
BP magnitude 15.88 (0.007)
RP magnitude 16.29 (0.006)
Pan g magnitude 15.96 (0.006)
Pan r magnitude 16.31 (0.002)
Pan i magnitude 16.63 (0.003)
Pan z magnitude 16.89 (0.007)
Pan y magnitude 17.07 (0.005)
E(B-V) 0.049

* 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.