All names: Gaia DR3 1804992750977947136, Gaia DR2 1804992750977947136, WD 2020+142, TIC 456398442, SDSS J202309.00+142422.8, GALEX J202308.9+142423, Gaia EDR3 1804992750977947136, 2MASS J20230901+1424229, SDSS J202309.01+142422.9, [SGR2010] J2023+1424, SDSS J202309.01+142422.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 23 09.00 (0.2) | 20 23 09.00 (0.2) | 20 23 09.01 (0.2) | 20 23 08.88 | 20 23 09.01 | |||
| Declination | 14 24 22.96 (0.2) | 14 24 22.96 (0.3) | 14 24 22.84 (0.2) | 14 24 18.00 | 14 24 22.86 | |||
| Spectral type | DA+M | DA2.3 M | DA+M | |||||
| Effective temperature | [K] | 6300.0 (3) | ||||||
| log(g) | [cgs] | 5.00 (0.006) | ||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 1.94 (0.2) | 2.23 (0.3) | 1.94 (0.2) | ||||
| Distance | [pc] | 514.57 (63) | 448.50 (62) | 514.56 (63) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -11.80147733 (0.2) | -11.9268564 (0.5) | -11.801 (0.2) | ||||
| Proper motion (declination) | [mas/yr] | 7.349791382 (0.2) | 7.888711091 (0.5) | 7.35 (0.2) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | WDMS | |||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 16.05 (0.09) | |||||||
| H magnitude | 15.33 (0.1) | |||||||
| K magnitude | 15.10 (0.1) | |||||||
| u magnitude | 20.34 (0.06) | 20.64 | 20.34 (0.05) | |||||
| g magnitude | 19.52 (0.01) | 19.85 | 19.51 (0.06) | |||||
| r magnitude | 19.00 (0.01) | 19.05 | 18.82 (0.01) | |||||
| i magnitude | 17.87 (0.008) | 18.24 | 17.83 (0.01) | |||||
| z magnitude | 17.36 (0.01) | 17.71 | 17.37 (0.02) | |||||
| G magnitude | 18.50 (0.03) | 18.51 | 18.50 (0.004) | |||||
| BP magnitude | 19.34 (0.03) | 19.33 | ||||||
| RP magnitude | 17.51 (0.01) | 17.50 | ||||||
| Pan g magnitude | 19.45 (0.02) | |||||||
| Pan r magnitude | 18.83 (0.008) | |||||||
| Pan i magnitude | 17.93 (0.006) | |||||||
| Pan z magnitude | 17.44 (0.003) | |||||||
| Pan y magnitude | 17.22 (0.005) | |||||||
| E(B-V) | 0.063 | |||||||
* 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.