All names: WD 1220+319, Gaia DR2 4015390527331254656, Gaia EDR3 4015390527331254656, SDSS J122315.42+313755.5, Gaia DR3 4015390527331254656, GALEX J122315.3+313755, SDSS J122315.36+313755.6, 2MASS J12231542+3137556, TIC 139110981, SDSS J122315.41+313755.4
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 23 15.41 (0.3) | 12 23 15.41 | 12 23 15.41 | 12 23 15.42 (0.3) | 12 23 14.78 | 12 23 15.42 | |||
| Declination | 31 37 54.94 (0.2) | 31 37 55.45 | 31 37 55.42 | 31 37 55.52 (0.2) | 31 37 52.68 | 31 37 55.48 | |||
| Spectral type | DA+M | DA+dM | DA d | DA+M | |||||
| Effective temperature | [K] | 10548.0 (608) | 6300.0 (3) | ||||||
| log(g) | [cgs] | 7.76 (0.8) | 10.00 (0.003) | ||||||
| Mass | [M☉] | 0.47 (0.5) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | -0.01 (0.3) | |||||||
| Distance | [pc] | 1737.00 (445) | |||||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -2.62337567 (0.3) | -2.623 (0.3) | ||||||
| Proper motion (declination) | [mas/yr] | -35.8593111 (0.3) | -35.859 (0.3) | ||||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | WDMS | |||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 15.46 (0.06) | ||||||||
| H magnitude | 14.91 (0.09) | ||||||||
| K magnitude | 14.98 (0.2) | ||||||||
| u magnitude | 20.53 (0.06) | 20.57 | 20.53 (0.07) | 20.57 | 20.54 (0.06) | ||||
| g magnitude | 19.33 (0.01) | 19.38 | 19.33 (0.01) | 19.38 | 19.36 (0.02) | ||||
| r magnitude | 18.51 (0.009) | 18.55 | 18.51 (0.009) | 18.55 | 18.55 (0.02) | ||||
| i magnitude | 17.40 (0.006) | 17.43 | 17.40 (0.006) | 17.43 | 17.41 (0.01) | ||||
| z magnitude | 16.79 (0.01) | 16.84 | 16.79 (0.01) | 16.84 | 16.81 (0.02) | ||||
| G magnitude | 18.16 (0.04) | 18.16 (0.005) | |||||||
| BP magnitude | 19.05 (0.04) | ||||||||
| RP magnitude | 16.97 (0.007) | ||||||||
| Pan g magnitude | 19.28 (0.007) | ||||||||
| Pan r magnitude | 18.52 (0.007) | ||||||||
| Pan i magnitude | 17.42 (0.004) | ||||||||
| Pan z magnitude | 16.90 (0.003) | ||||||||
| Pan y magnitude | 16.64 (0.009) | ||||||||
| E(B-V) | 0.014 | ||||||||
* 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.