All names: GALEX J172012.3-763625, Gaia DR2 5801771089072182400, WISE J172012.46-763627.3, 2MASS J17201248-7636268, DENIS J172012.4-763627, Gaia DR3 5801771089072182400, TIC 311536402, UCAC4 067-027932, WISEA J172012.47-763627.5, GALEXJ17202-7636
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 17 20 12.30 | 17 20 12.47 (0.01) | ||
Declination | -76 36 26.00 | -76 36 27.08 (0.02) | ||
Spectral type | sdB | sdB | ||
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] | 1.98 (0.03) | 1.95 (0.02) | |
Distance | [pc] | 505.94 (8) | 512.16 (5) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | -9.199 (0.04) | -9.076 (0.02) | |
Proper motion (declination) | [mas/yr] | -42.419 (0.05) | -42.436 (0.02) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | 13.54 (0.04) | |||
V magnitude | 13.57 (0.02) | |||
R magnitude | 13.82 (0.07) | |||
I magnitude | 13.77 (0.03) | |||
J magnitude | 13.80 (0.02) | 13.80 (0.02) | ||
H magnitude | 14.00 (0.04) | 14.00 (0.04) | ||
K magnitude | 14.07 (0.05) | 14.07 (0.05) | ||
u magnitude | ||||
g magnitude | 13.47 (0.06) | |||
r magnitude | 13.72 (0.03) | |||
i magnitude | 13.95 (0.05) | |||
z magnitude | ||||
G magnitude | 13.56 (0.0004) | 13.54 (0.003) | ||
BP magnitude | 13.44 (0.004) | |||
RP magnitude | 13.65 (0.001) | |||
Pan g magnitude | ||||
Pan r magnitude | ||||
Pan i magnitude | ||||
Pan z magnitude | ||||
Pan y magnitude | ||||
E(B-V) | 0.061 |
* 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.