All names: MCT 2336-1955, WD 2336-199, Gaia DR2 2390640129086674560, SDSS J233927.76-193848.1, GALEX J233927.7-193848, TIC 66419508, Gaia DR3 2390640129086674560, 2MASS J23392774-1938479, USNO-B1.0 0703-00831908, Gaia EDR3 2390640129086674560, EC 23368-1955
| Parameter | Unit | Gaia EDR3 | Bergeron et al. 2021 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 39 27.76 (0.05) | 23 39 27.76 (0.07) | 23 39 27.76 | 23 39 27.77 (0.05) | 23 39 27.05 | ||||
| Declination | -19 38 48.62 (0.05) | -19 38 48.60 (0.09) | -19 38 48.62 | -19 38 48.10 (0.05) | -19 38 40.20 | ||||
| Spectral type | DA | DA | DA | DA2.4 | DA | ||||
| Effective temperature | [K] | 20062.0 (328) | 20810.0 (363) | 21005.0 (570) | |||||
| log(g) | [cgs] | 8.05 (0.05) | 7.97 (0.05) | 7.92 (0.03) | |||||
| Mass | [M☉] | 0.653 (0.03) | 0.61 (0.03) | 0.582 (0.02) | |||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | 0.0744 | |||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| log(C/H) | |||||||||
| log(N/H) | |||||||||
| log(O/H) | |||||||||
| log(Na/H) | |||||||||
| log(Mg/H) | |||||||||
| log(Al/H) | |||||||||
| log(Si/H) | |||||||||
| log(P/H) | |||||||||
| log(S/H) | |||||||||
| log(Sc/H) | |||||||||
| log(Ti/H) | |||||||||
| log(Cr/H) | |||||||||
| log(Mn/H) | |||||||||
| log(Fe/H) | |||||||||
| log(Ni/H) | |||||||||
| Parallax | [mas] | 6.86 (0.06) | 6.86 (0.1) | 6.86 | 6.86 (0.06) | ||||
| Distance | [pc] | 145.85 (1) | 145.00 | 145.88 (2) | 134.00 | 145.85 | 145.85 (1) | ||
| Composition | H | H | |||||||
| Proper motion (right ascension) | [mas/yr] | -4.919169919 (0.07) | -5.044772141 (0.2) | -4.919 (0.07) | |||||
| Proper motion (declination) | [mas/yr] | -32.46852457 (0.06) | -32.56540481 (0.2) | -32.469 (0.06) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 17.20 | ||||||||
| V magnitude | |||||||||
| R magnitude | 16.10 | ||||||||
| I magnitude | |||||||||
| J magnitude | 16.92 (0.1) | ||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | |||||||||
| g magnitude | |||||||||
| r magnitude | |||||||||
| i magnitude | |||||||||
| z magnitude | |||||||||
| G magnitude | 16.40 (0.003) | 16.43 | 16.40 | 16.40 (0.003) | |||||
| BP magnitude | 16.32 (0.003) | 16.29 | |||||||
| RP magnitude | 16.59 (0.006) | 16.59 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.005 | ||||||||
* 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.