All names: SDSS J025509.30-004414.8, [SGR2010] J0255-0044, TIC 439872563, WISEA J025509.31-004414.9, SDSS J025509.29-004414.7, Gaia EDR3 2497850007512856832, WIRED J025509.29-004414.7, WD 0252-009, Gaia DR2 2497850007512856832, SDSS J025509.30-004414.9, WISE J025509.30-004414.7, 2MASS J02550929-0044148
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 02 55 09.31 (0.3) | 02 55 09.31 | 02 55 09.31 (0.4) | 02 55 09.31 | 02 55 09.30 | 02 55 09.07 | 02 55 09.30 | |||
| Declination | -00 44 15.15 (0.3) | -00 44 14.94 | -00 44 15.14 (0.4) | -00 44 14.94 | -00 44 14.96 | -00 44 10.68 | -00 44 14.77 | |||
| Spectral type | DA+dMe | DA+M | DA dM | DA+M | ||||||
| Effective temperature | [K] | 6300.0 (1) | 6300.0 (2) | |||||||
| log(g) | [cgs] | 8.71 (0.1) | 5.13 (0.1) | |||||||
| Mass | [M☉] | |||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 3.69 (0.4) | -0.10 (0.5) | |||||||
| Distance | [pc] | 271.24 (30) | ||||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.803859416 (0.4) | 2.141976768 (0.8) | 6.0 (3) | 6.8 | |||||
| Proper motion (declination) | [mas/yr] | -13.80680767 (0.4) | -16.80233984 (0.8) | -19.0 (3) | -18.9 | |||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 15.82 (0.06) | |||||||||
| H magnitude | 15.31 (0.09) | |||||||||
| K magnitude | 14.83 (0.1) | |||||||||
| u magnitude | 20.65 (0.06) | 20.65 (0.06) | 20.77 (0.1) | 20.77 | 20.83 (0.1) | |||||
| g magnitude | 19.73 (0.01) | 19.73 (0.01) | 19.83 (0.02) | 19.83 | 19.86 (0.02) | |||||
| r magnitude | 18.73 (0.01) | 18.73 (0.01) | 18.82 (0.02) | 18.82 | 18.83 (0.02) | |||||
| i magnitude | 17.77 (0.008) | 17.77 (0.008) | 17.81 (0.02) | 17.81 | 17.83 (0.02) | |||||
| z magnitude | 17.16 (0.01) | 17.16 (0.01) | 17.23 (0.02) | 17.23 | 17.25 (0.02) | |||||
| G magnitude | 18.51 (0.04) | 18.54 | ||||||||
| BP magnitude | 19.39 (0.04) | 19.29 | ||||||||
| RP magnitude | 17.37 (0.01) | 17.37 | ||||||||
| Pan g magnitude | 19.62 (0.02) | |||||||||
| Pan r magnitude | 18.83 (0.01) | |||||||||
| Pan i magnitude | 17.83 (0.007) | |||||||||
| Pan z magnitude | 17.35 (0.009) | |||||||||
| Pan y magnitude | 17.12 (0.008) | |||||||||
| E(B-V) | 0.025 | |||||||||
* 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.