All names: TIC 49800425, 2MASS J03085987-0027356, SDSS J030859.86-002735.8, Gaia DR2 3266379154673214464, LAMOST J030859.86-002735.7, GALEX J030859.8-002735, WIRED J030859.86-002735.7, Gaia EDR3 3266379154673214464, WD 0306-006, Gaia DR3 3266379154673214464, SDSS J030859.86-002735.7, SDSS J030859.87-002735.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Guo et al. 2015 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 03 08 59.86 (0.2) | 03 08 59.86 | 03 08 59.86 (0.2) | 03 08 59.86 (0.2) | 03 08 59.86 | 03 08 58.27 | 03 08 59.86 | ||||
| Declination | -00 27 35.74 (0.2) | -00 27 35.78 | -00 27 35.74 (0.2) | -00 27 35.76 (0.2) | -00 27 35.80 | -00 27 29.52 | -00 27 35.80 | ||||
| Spectral type | DA+M? | DA+dM | DA+M | DA5.3+dM | DA+M | ||||||
| Effective temperature | [K] | 6300.0 (1) | 6300.0 (3) | ||||||||
| log(g) | [cgs] | 8.33 (0.3) | 5.00 (0.006) | ||||||||
| Mass | [M☉] | ||||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 1.31 (0.2) | 1.03 (0.2) | 1.31 (0.2) | |||||||
| Distance | [pc] | 760.78 (109) | 966.88 (206) | 760.80 (109) | |||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -6.567989906 (0.2) | -8.192631393 (0.4) | -6.568 (0.2) | -9.7 | ||||||
| Proper motion (declination) | [mas/yr] | 1.274538572 (0.2) | 1.728802269 (0.4) | 1.275 (0.2) | -1.2 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | |||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 15.65 (0.008) | ||||||||||
| H magnitude | 15.09 (0.005) | ||||||||||
| K magnitude | 14.82 (0.009) | ||||||||||
| u magnitude | 20.23 (0.04) | 20.14 (0.05) | 20.07 (0.06) | 20.39 | 20.08 (0.06) | ||||||
| g magnitude | 19.51 (0.01) | 19.47 (0.01) | 19.50 (0.03) | 19.64 | 19.50 (0.03) | ||||||
| r magnitude | 18.83 (0.01) | 18.86 (0.01) | 18.87 (0.02) | 18.91 | 18.86 (0.02) | ||||||
| i magnitude | 17.73 (0.007) | 17.76 (0.007) | 17.80 (0.02) | 17.85 | 17.78 (0.02) | ||||||
| z magnitude | 17.06 (0.01) | 17.04 (0.01) | 17.05 (0.01) | 17.21 | 17.03 (0.02) | ||||||
| G magnitude | 18.32 (0.06) | 18.34 | 18.32 (0.004) | ||||||||
| BP magnitude | 19.27 (0.06) | 19.16 | |||||||||
| RP magnitude | 17.28 (0.01) | 17.29 | |||||||||
| Pan g magnitude | 19.44 (0.01) | ||||||||||
| Pan r magnitude | 18.80 (0.008) | ||||||||||
| Pan i magnitude | 17.74 (0.003) | ||||||||||
| Pan z magnitude | 17.18 (0.007) | ||||||||||
| Pan y magnitude | 16.88 (0.004) | ||||||||||
| 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.