All names: TIC 238390711, Gaia DR2 2853692927070187136, GALEX J000444.2+264617, 2MASS J00044434+2646181, [SGR2010] J0004+2646, SDSS J000444.34+264617.8, WD 0002+264, Gaia EDR3 2853692927070187136, Gaia DR3 2853692927070187136
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 04 44.36 (0.6) | 00 04 44.34 | 00 04 44.36 (0.5) | 00 04 44.35 | 00 04 44.36 (0.6) | 00 04 44.28 | ||
| Declination | 26 46 17.76 (0.4) | 26 46 17.90 | 26 46 17.77 (0.4) | 26 46 17.83 | 26 46 18.09 (0.4) | 26 46 18.12 | ||
| Spectral type | DA+M | DA+M3 | DA+M3 | |||||
| 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] | 3.22 (0.8) | 2.26 (0.7) | 3.22 (0.8) | ||||
| Distance | [pc] | 310.20 (80) | 441.70 (136) | 310.20 (80) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -2.270301776 (0.9) | -3.167 (1) | -2.27 (0.9) | ||||
| Proper motion (declination) | [mas/yr] | -20.56053913 (0.6) | -22.407 (0.8) | -20.561 (0.6) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | WDMS | yes | ||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 16.23 (0.1) | |||||||
| H magnitude | 15.68 (0.2) | |||||||
| K magnitude | 15.30 (0.2) | |||||||
| u magnitude | 20.71 (0.06) | 20.95 | 20.90 (0.08) | 20.90 | ||||
| g magnitude | 20.18 (0.02) | 20.29 | 20.21 (0.02) | 20.21 | ||||
| r magnitude | 19.54 (0.01) | 19.75 | 19.63 (0.01) | 19.63 | ||||
| i magnitude | 18.44 (0.01) | 18.53 | 18.45 (0.01) | 18.45 | ||||
| z magnitude | 17.69 (0.02) | 17.78 | 17.73 (0.02) | 17.73 | ||||
| G magnitude | 19.35 (0.05) | 19.35 | 19.35 (0.006) | |||||
| BP magnitude | 19.93 (0.05) | 19.95 | ||||||
| RP magnitude | 17.94 (0.02) | 17.93 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.048 | |||||||
* 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.