All names: Gaia DR2 6545617505854472192, LEHPM 5076, Gaia EDR3 6545617505854472192, TIC 214660387, Gaia DR3 6545617505854472192, 2MASS J22442147-4015358, ESP 17397, MCT 2241-4031, WDJ224421.49-401535.71, LEDA 2794058
| Parameter | Unit | Gaia EDR3 | Bergeron et al. 2021 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 44 21.74 (0.04) | 22 44 21.73 | 22 44 21.74 | 22 44 21.49 (0.04) | 22 44 21.73 | |||
| Declination | -40 15 37.38 (0.04) | -40 15 37.33 | -40 15 37.38 | -40 15 35.72 (0.04) | -40 15 37.33 | |||
| Spectral type | DC | DB | DC | |||||
| Effective temperature | [K] | 10081.0 (141) | 10855.0 (110) | |||||
| log(g) | [cgs] | 7.88 (0.03) | 8.06 (0.01) | |||||
| Mass | [M☉] | 0.515 (0.01) | 0.621 (0.01) | |||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | 0.5471 | ||||||
| log(H/He) | -4.6 | |||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| log(N/He) | ||||||||
| log(O/He) | ||||||||
| log(Na/He) | ||||||||
| log(Mg/He) | ||||||||
| log(Al/He) | ||||||||
| log(Si/He) | ||||||||
| log(P/He) | ||||||||
| log(S/He) | ||||||||
| log(Cl/He) | ||||||||
| log(Sc/He) | ||||||||
| log(Ti/He) | ||||||||
| log(V/He) | ||||||||
| log(Cr/He) | ||||||||
| log(Mn/He) | ||||||||
| log(Fe/He) | ||||||||
| log(Co/He) | ||||||||
| log(Ni/He) | ||||||||
| log(Cu/He) | ||||||||
| log(Zn/He) | ||||||||
| log(Ga/He) | ||||||||
| log(Ge/He) | ||||||||
| log(Sr/He) | ||||||||
| Parallax | [mas] | 14.39 (0.05) | 14.38 (0.1) | 14.39 | 14.39 (0.05) | 14.38 (0.1) | ||
| Distance | [pc] | 69.47 (0.3) | 69.00 | 69.54 (0.7) | 69.47 | 69.47 (0.3) | 69.54 (0.7) | |
| Composition | He | |||||||
| Proper motion (right ascension) | [mas/yr] | 175.7970045 (0.05) | 175.8552363 (0.1) | 175.797 (0.05) | 175.8552363 | |||
| Proper motion (declination) | [mas/yr] | -103.9005175 (0.05) | -103.9994108 (0.1) | -103.901 (0.05) | -103.9994108 | |||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 16.48 (0.1) | |||||||
| H magnitude | 16.44 (0.3) | |||||||
| K magnitude | 16.04 (0.3) | |||||||
| u magnitude | ||||||||
| g magnitude | ||||||||
| r magnitude | ||||||||
| i magnitude | ||||||||
| z magnitude | ||||||||
| G magnitude | 16.32 (0.004) | 16.35 | 16.32 | 16.32 (0.003) | 16.35 | |||
| BP magnitude | 16.34 (0.004) | 16.30 | 16.30 | |||||
| RP magnitude | 16.30 (0.004) | 16.29 | 16.29 | |||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.002 | |||||||
* 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.