All names: UCAC2 24993755, GD 1295, EC 23177-1825, UCAC4 360-214000, Gaia DR3 2405486323495785856, WISE J232023.75-180905.6, WISEA J232023.75-180905.5, PHL 466, TIC 9057694, DENIS J232023.7-180905, Gaia EDR3 2405486323495785856, 2MASS J23202375-1809054, Gaia DR2 2405486323495785856, WD 2317-184
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|
| Right ascension | 23 20 23.76 (0.04) | 23 20 23.76 (0.04) | 23 20 23.76 (0.04) | 23 20 19.70 | |||
| Declination | -18 09 05.65 (0.03) | -18 09 05.64 (0.03) | -18 09 05.51 (0.03) | -18 09 33.48 | |||
| Spectral type | sdB/B | DA4 | |||||
| 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] | 0.43 (0.04) | 0.36 (0.05) | 0.43 (0.04) | |||
| Distance | [pc] | 2336.29 (202) | 2786.29 (372) | 2336.45 (202) | |||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | -1.929427562 (0.04) | -1.815 (0.09) | -1.929 (0.04) | |||
| Proper motion (declination) | [mas/yr] | -8.752291176 (0.04) | -8.715 (0.07) | -8.752 (0.04) | |||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | 14.04 (0.03) | ||||||
| V magnitude | 14.16 (0.02) | ||||||
| R magnitude | 14.33 (0.2) | ||||||
| I magnitude | 14.27 (0.04) | ||||||
| J magnitude | 14.51 (0.03) | ||||||
| H magnitude | 14.62 (0.06) | ||||||
| K magnitude | 14.55 (0.07) | ||||||
| u magnitude | |||||||
| g magnitude | |||||||
| r magnitude | |||||||
| i magnitude | |||||||
| z magnitude | |||||||
| G magnitude | 14.16 (0.002) | 14.18 | 14.16 (0.003) | ||||
| BP magnitude | 14.08 (0.002) | 14.07 | |||||
| RP magnitude | 14.30 (0.001) | 14.31 | |||||
| Pan g magnitude | 14.04 (0.01) | ||||||
| Pan r magnitude | 14.36 (0.003) | ||||||
| Pan i magnitude | 14.64 (0.002) | ||||||
| Pan z magnitude | 14.86 (0.006) | ||||||
| Pan y magnitude | 14.97 (0.003) | ||||||
| E(B-V) | 0.016 | ||||||
* 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.