All names: GALEX J004457.0-122856, MCT 0042-1245, TIC 92226759, EC 00424-1245, MCT0042-1245, 2MASS J00445713-1228554, UCAC4 388-000858, Gaia DR2 2376181692916635520, PHL 820, UCAC2 27406710, Gaia DR3 2376181692916635520, Gaia EDR3 2376181692916635520
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 00 44 57.15 (0.04) | 00 44 57.16 | 00 44 57.14 (0.04) | ||
| Declination | -12 28 55.50 (0.02) | -12 28 54.83 | -12 28 55.45 (0.02) | ||
| Spectral type | sdB | sdBHe0 | |||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.74 (0.05) | 0.71 (0.06) | 0.74 (0.05) | |
| Distance | [pc] | 1345.71 (91) | 1415.63 (129) | 1345.71 (91) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 3.332 (0.08) | 3.395 (0.2) | 3.332 (0.08) | |
| Proper motion (declination) | [mas/yr] | -3.331 (0.05) | -3.144 (0.07) | -3.331 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.11 (0.03) | ||||
| V magnitude | 15.29 (0.03) | ||||
| R magnitude | 15.70 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 15.75 (0.08) | 15.75 (0.08) | |||
| H magnitude | 16.12 (0.2) | 16.12 (0.2) | |||
| K magnitude | 15.81 | ||||
| u magnitude | |||||
| g magnitude | 15.08 (0.02) | ||||
| r magnitude | 15.47 (0.05) | ||||
| i magnitude | 15.75 (0.01) | ||||
| z magnitude | |||||
| G magnitude | 15.28 (0.003) | 15.30 (0.0005) | 15.28 (0.003) | ||
| BP magnitude | 15.15 (0.003) | 15.09 (0.005) | |||
| RP magnitude | 15.54 (0.005) | 15.54 (0.004) | |||
| Pan g magnitude | 15.12 (0.003) | ||||
| Pan r magnitude | 15.51 (0.001) | ||||
| Pan i magnitude | 15.88 (0.002) | ||||
| Pan z magnitude | 16.15 (0.003) | ||||
| Pan y magnitude | 16.31 (0.01) | ||||
| E(B-V) | 0.024 | ||||
* 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.