All names: UCAC4 227-063983, WDS J12347-4440C, Gaia EDR3 6133033635916500608, Gaia DR2 6133033635912545280, ** NSN 406C, TIC 72814914, WDJ123445.37-444001.75, Gaia DR3 6133033635916500608, 123445.37-444001.75, WDJ123445.37-444001.74, 2MASS J12344536-4440016
| Parameter | Unit | Gaia EDR3 | O'Brien et al. 2024 | O'Brien et al. 2022 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 34 45.25 (0.03) | 12 34 45.25 | 12 34 45.25 | 12 34 45.37 (0.03) | 12 34 45.25 | ||||
| Declination | -44 40 04.96 (0.04) | -44 40 04.86 | -44 40 04.96 | -44 40 01.75 (0.04) | -44 40 04.86 | ||||
| Spectral type | DC | DC | DC | DC | |||||
| Effective temperature | [K] | 6665.0 (73) | 6800.0 (70) | 6169.0 (53) | |||||
| log(g) | [cgs] | 8.19 (0.03) | 8.26 (0.03) | 8.04 (0.01) | |||||
| Mass | [M☉] | 0.695 (0.02) | 0.599 (0.01) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 35.12 (0.04) | 35.12 (0.04) | 35.12 (0.04) | 35.16 (0.08) | 35.12 | 35.12 (0.04) | 35.16 (0.08) | |
| Distance | [pc] | 28.47 (0.04) | 28.47 (0.03) | 28.47 (0.03) | 28.44 (0.06) | 28.47 | 28.47 (0.04) | 28.44 (0.06) | |
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -78.75620282 (0.04) | -78.68689713 (0.1) | -78.756 (0.04) | -78.68689713 | ||||
| Proper motion (declination) | [mas/yr] | -200.4616571 (0.05) | -200.7426288 (0.2) | -200.462 (0.05) | -200.7426288 | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | 16.28 (0.4) | ||||||||
| I magnitude | |||||||||
| J magnitude | 15.74 (0.06) | ||||||||
| H magnitude | 15.34 (0.08) | ||||||||
| K magnitude | 15.41 (0.2) | ||||||||
| u magnitude | |||||||||
| g magnitude | |||||||||
| r magnitude | |||||||||
| i magnitude | |||||||||
| z magnitude | |||||||||
| G magnitude | 16.18 (0.006) | 16.19 | 16.18 | 16.18 (0.003) | 16.19 | ||||
| BP magnitude | 16.40 (0.006) | 16.38 | 16.38 | ||||||
| RP magnitude | 15.83 (0.004) | 15.81 | 15.81 | ||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.001 | ||||||||
* 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.