All names: TIC 220347928, 2MASS J20302016-5950394, Gaia DR2 6455294377981864320, BPS CS 22940-0009, Gaia DR3 6455294377981864320, GALEXJ20303-5950, UCAC4 151-223442, GALEX J203020.1-595039, EC 20262-6000
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 30 20.11 | 20 30 20.17 (0.02) | ||
| Declination | -59 50 39.49 | -59 50 39.35 (0.02) | ||
| Spectral type | He-sdB | sdBC1VHe38 | ||
| 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] | 0.48 (0.06) | 0.44 (0.03) | |
| Distance | [pc] | 2062.71 (264) | 2251.75 (176) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 2.452 (0.09) | 2.528 (0.03) | |
| Proper motion (declination) | [mas/yr] | -10.956 (0.07) | -10.794 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.85 (0.01) | |||
| V magnitude | 14.00 (0.01) | |||
| R magnitude | 14.18 (0.09) | |||
| I magnitude | ||||
| J magnitude | 14.61 (0.05) | 14.61 (0.05) | ||
| H magnitude | 14.70 (0.07) | 14.70 (0.07) | ||
| K magnitude | 14.67 (0.1) | 14.67 (0.1) | ||
| u magnitude | ||||
| g magnitude | 13.78 (0.01) | |||
| r magnitude | 14.19 (0.04) | |||
| i magnitude | 14.50 (0) | |||
| z magnitude | ||||
| G magnitude | 13.98 (0.0003) | 13.97 (0.003) | ||
| BP magnitude | 13.80 (0.006) | |||
| RP magnitude | 14.21 (0.001) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.028 | |||
* 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.