All names: UCAC2 1004966, Gaia DR3 4640897263535023744, UCAC4 085-007372, TIC 426029609, Gaia EDR3 4640897224879459712, 2MASS J02553555-7310387, [DI91] 1379, EC 02556-7322, EC02556-7322, GALEX J025535.4-731038, IDK B002, Gaia DR3 4640897224879459712, Gaia DR2 4640897263535023744
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 02 55 29.13 (0.1) | 02 55 35.51 | 02 55 29.13 | 02 55 35.54 (0.06) | ||
| Declination | -73 11 18.76 (0.1) | -73 10 38.50 | -73 11 18.76 | -73 10 38.71 (0.05) | ||
| Spectral type | sdB+F | DA | sdB+F | |||
| Effective temperature | [K] | 22550.0 (1711) | ||||
| log(g) | [cgs] | 8.12 (0.08) | ||||
| Mass | [M☉] | 0.7 (0.07) | ||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 2.87 (0.1) | 0.01 (0.06) | 2.87 | 0.01 (0.06) | |
| Distance | [pc] | 348.38 (15) | 103092.78 (675949) | 348.39 | 103092.78 (675949) | |
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 29.592 (0.1) | 2.023 (0.1) | 2.185 (0.08) | ||
| Proper motion (declination) | [mas/yr] | 11.35 (0.2) | -0.817 (0.1) | -0.696 (0.07) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 14.95 | |||||
| V magnitude | 15.08 | |||||
| R magnitude | 15.27 (0.07) | |||||
| I magnitude | ||||||
| J magnitude | 15.28 (0.06) | 15.28 (0.06) | ||||
| H magnitude | 15.31 (0.1) | 15.31 (0.1) | ||||
| K magnitude | 15.09 (0.2) | 15.09 (0.2) | ||||
| u magnitude | ||||||
| g magnitude | 14.94 (0.01) | |||||
| r magnitude | 15.19 (0.01) | |||||
| i magnitude | 15.45 (0.1) | |||||
| z magnitude | ||||||
| G magnitude | 18.55 (0.003) | 15.07 (0.0005) | 18.55 | 15.06 (0.003) | ||
| BP magnitude | 18.45 (0.02) | 14.97 (0.006) | ||||
| RP magnitude | 18.73 (0.04) | 15.13 (0.003) | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.035 | |||||
* 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.