All names: SDSS J122326.43+452957.7, SDSS J122326.43+452957.6, GALEX J122326.4+452958, 2MASS J12232639+4529578, Gaia DR2 1544774254607354240, Gaia EDR3 1544774254607354240, WD 1220+457, Gaia DR3 1544774254607354240, TIC 284569589
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 23 26.42 (0.1) | 12 23 26.43 | 12 23 26.42 (0.2) | 12 23 26.43 (0.1) | 12 23 26.14 | |||
| Declination | 45 29 57.63 (0.2) | 45 29 57.67 | 45 29 57.63 (0.2) | 45 29 57.68 (0.2) | 45 29 52.80 | |||
| Spectral type | D+M | WD M | ||||||
| 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] | 0.69 (0.3) | 0.10 (0.3) | 0.69 (0.3) | ||||
| Distance | [pc] | 1450.62 (538) | 10371.81 (33780) | 1450.54 (538) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -5.305415561 (0.2) | -6.102679238 (0.3) | -5.305 (0.2) | ||||
| Proper motion (declination) | [mas/yr] | -3.289957577 (0.2) | -2.601369181 (0.4) | -3.29 (0.2) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 16.64 (0.1) | |||||||
| H magnitude | 15.93 (0.2) | |||||||
| K magnitude | 15.76 (0.2) | |||||||
| u magnitude | 21.25 (0.08) | 21.28 (0.09) | 21.27 | |||||
| g magnitude | 20.17 (0.02) | 20.17 (0.02) | 20.15 | |||||
| r magnitude | 19.17 (0.01) | 19.17 (0.01) | 19.13 | |||||
| i magnitude | 18.52 (0.01) | 18.55 (0.01) | 18.53 | |||||
| z magnitude | 18.14 (0.02) | 18.16 (0.02) | 18.13 | |||||
| G magnitude | 19.09 (0.04) | 19.11 | 19.09 (0.004) | |||||
| BP magnitude | 19.93 (0.04) | 19.71 | ||||||
| RP magnitude | 18.19 (0.02) | 18.06 | ||||||
| Pan g magnitude | 20.11 (0.02) | |||||||
| Pan r magnitude | 19.25 (0.01) | |||||||
| Pan i magnitude | 18.56 (0.007) | |||||||
| Pan z magnitude | 18.18 (0.007) | |||||||
| Pan y magnitude | 17.98 (0.01) | |||||||
| E(B-V) | 0.017 | |||||||
* 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.