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
Spectra without link are available upon request
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.