All names: MCT 2146-4320, 2MASS J21493891-4306142, WD 2146-433, Gaia DR3 6565941703417200128, BPS CS 22951-0067, GALEX J214938.8-430613, Gaia DR2 6565941703417200128, Gaia EDR3 6565941703417200128, TIC 147423571, USNO-B1.0 0468-00860965
| Parameter | Unit | Gaia EDR3 | Bergeron et al. 2021 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Koester et al. 2009 | Koester et al. 2005 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 49 38.90 (0.03) | 21 49 38.90 (0.06) | 21 49 38.90 | 21 49 38.93 (0.03) | 21 49 38.95 | ||||||
| Declination | -43 06 14.52 (0.03) | -43 06 14.51 (0.06) | -43 06 14.52 | -43 06 14.18 (0.03) | -43 06 11.16 | ||||||
| Spectral type | DA | DA | DA | DA | DA.6 | DA | |||||
| Effective temperature | [K] | 64127.0 (2474) | 78090.0 (3178) | 62792.0 (388) | 71500.0 | 150083.0 (17678) | |||||
| log(g) | [cgs] | 7.64 (0.1) | 7.30 (0.1) | 7.23 (0.02) | 7.10 | 8.54 (0.2) | |||||
| Mass | [M☉] | 0.571 (0.04) | 0.53 (0.03) | 2.907 (1) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.0008 | |||||||||
| 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] | 2.92 (0.04) | 2.90 (0.09) | 2.92 | 2.92 (0.04) | ||||||
| Distance | [pc] | 343.02 (5) | 343.00 | 344.45 (10) | 501.00 | 343.02 | 343.02 (5) | ||||
| Composition | H | H | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | -21.95459332 (0.04) | -22.16023338 (0.1) | -21.955 (0.04) | |||||||
| Proper motion (declination) | [mas/yr] | -21.19610107 (0.04) | -20.96861878 (0.1) | -21.196 (0.04) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 15.80 | ||||||||||
| V magnitude | 15.81 | 15.70 | |||||||||
| R magnitude | 15.70 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.36 (0.1) | ||||||||||
| H magnitude | 16.67 (0.3) | ||||||||||
| K magnitude | |||||||||||
| u magnitude | |||||||||||
| g magnitude | |||||||||||
| r magnitude | |||||||||||
| i magnitude | |||||||||||
| z magnitude | |||||||||||
| G magnitude | 15.67 (0.002) | 15.68 | 15.67 | 15.67 (0.003) | |||||||
| BP magnitude | 15.49 (0.002) | 15.40 | |||||||||
| RP magnitude | 16.01 (0.002) | 16.00 | |||||||||
| Pan g magnitude | |||||||||||
| Pan r magnitude | |||||||||||
| Pan i magnitude | |||||||||||
| Pan z magnitude | |||||||||||
| Pan y magnitude | |||||||||||
| E(B-V) | 0.013 | ||||||||||
* 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.