All names: GALEX J170802.4+820553, 2MASS J17080145+8205533, Gaia DR2 1710904418546053632, GALEXJ17080+8205, TIC 237107705, Gaia DR3 1710904418546053632, FBS 1713+822, FBS B 1093
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 08 02.40 | 17 08 01.59 (0.03) | ||
| Declination | 82 05 54.05 | 82 05 53.30 (0.02) | ||
| Spectral type | He-sdO | sdOHe | ||
| 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] | 0.29 (0.04) | 0.37 (0.03) | |
| Distance | [pc] | 3425.83 (419) | 2714.44 (197) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -8.35 (0.06) | -8.243 (0.04) | |
| Proper motion (declination) | [mas/yr] | -2.156 (0.07) | -2.209 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.45 (0.07) | 15.45 (0.07) | ||
| H magnitude | 15.62 (0.2) | 15.62 (0.2) | ||
| K magnitude | 15.29 (0.3) | 15.29 (0.3) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | ||||
| i magnitude | ||||
| z magnitude | ||||
| G magnitude | 14.82 (0.0006) | 14.80 (0.003) | ||
| BP magnitude | 14.63 (0.008) | |||
| RP magnitude | 15.01 (0.002) | |||
| Pan g magnitude | 14.71 (0.006) | |||
| Pan r magnitude | 15.04 (0.002) | |||
| Pan i magnitude | 15.35 (0.004) | |||
| Pan z magnitude | 15.59 (0.005) | |||
| Pan y magnitude | 15.77 (0.007) | |||
| E(B-V) | 0.068 | |||
* 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.