All names: TIC 402913811, 61-9°1, Gaia DR3 1816547660416810880, GSC 01639-01907, PN ARO 75, MITG J202222+2006, CSI+19-20201, HD 193949, NGC 6905, PLX 4855.00, IRAS 20201+1956, GCRV 12720, WD 2020+199, Hen 2-466, Gaia DR2 1816547660416810880, PK 061-09 1, PN VV 257, GB6 B2020+1956, 2MASX J20222299+2006162, Gaia EDR3 1816547660416810880, V* NT Del, 87GB 202009.1+195631, [KW97] 46-1, PLX 4855, BWE 2020+1956, NAME Blue Flash Nebula, PN VV' 535, PN G061.4-09.5, WEB 18141
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Simbad | White Dwarf Research Corporation | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|
| Right ascension | 20 22 22.98 (0.02) | 20 22 22.98 (0.04) | 20 22 22.99 (0.02) | 20 22 22.92 | |||
| Declination | 20 06 16.20 (0.02) | 20 06 16.20 (0.04) | 20 06 16.29 (0.02) | 20 06 15.48 | |||
| Spectral type | [WC3] | PG1159 | GWVIR .3 | ||||
| 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] | 0.37 (0.03) | 0.40 (0.05) | 0.37 (0.03) | |||
| Distance | [pc] | 2716.70 (207) | 2502.50 (286) | 2716.65 (207) | |||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | -6.88452717 (0.03) | -6.938 (0.08) | -6.885 (0.03) | |||
| Proper motion (declination) | [mas/yr] | -5.542601719 (0.03) | -5.53 (0.08) | -5.543 (0.03) | |||
| Variability | VAR | VAR | |||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | 16.30 | ||||||
| V magnitude | 14.50 | 15.70 | |||||
| R magnitude | |||||||
| I magnitude | |||||||
| J magnitude | 12.95 (0.08) | ||||||
| H magnitude | 12.85 (0.1) | ||||||
| K magnitude | 12.10 (0.1) | ||||||
| u magnitude | |||||||
| g magnitude | |||||||
| r magnitude | |||||||
| i magnitude | |||||||
| z magnitude | |||||||
| G magnitude | 14.60 (0.006) | 14.55 | 14.60 (0.003) | ||||
| BP magnitude | 14.44 (0.006) | 14.30 | |||||
| RP magnitude | 14.64 (0.007) | 14.58 | |||||
| Pan g magnitude | |||||||
| Pan r magnitude | |||||||
| Pan i magnitude | |||||||
| Pan z magnitude | |||||||
| Pan y magnitude | |||||||
| E(B-V) | 0.125 | ||||||
* 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.