All names: Gaia DR3 2730707260103011712, SDSS J222233.90+122142.9, WDJ222233.82+122142.65, WD 2220+121.1, USNO-B1.0 1023-00751629, LSPM J2222+1221, GSC2U J222233.1+122140, Gaia EDR3 2730707260103011712, PM J22225+1221, Gaia DR2 2730707260103011712, SDSS J222233.89+122142.9, LSR J2222+1221, SDSS J222233.90+122143.0
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Stilism | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 22 34.59 (0.2) | 22 22 34.59 | 22 22 33.82 (0.2) | 22 22 33.72 | ||||
| Declination | 12 21 45.69 (0.3) | 12 21 45.69 | 12 21 42.65 (0.3) | 12 21 40.68 | ||||
| Spectral type | DC | DA: | DC | DC14.6 | ||||
| Effective temperature | [K] | 4196.0 (123) | 4071.0 (108) | |||||
| log(g) | [cgs] | 7.81 (0.1) | 7.74 (0.05) | |||||
| Mass | [M☉] | 0.466 (0.04) | 0.431 (0.04) | |||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 26.00 (0.2) | 26.00 (0.2) | 26.00 | 26.00 (0.2) | |||
| Distance | [pc] | 38.47 (0.3) | 38.46 (0.3) | 38.47 | 38.47 (0.3) | |||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 706.17 (0.3) | 706.17 (0.3) | |||||
| Proper motion (declination) | [mas/yr] | 189.886 (0.3) | 189.886 (0.3) | |||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 20.10 | |||||||
| V magnitude | ||||||||
| R magnitude | 16.50 | |||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 21.54 (0.2) | 21.08 | ||||||
| g magnitude | 19.48 (0.01) | 19.13 | ||||||
| r magnitude | 18.35 (0.008) | 18.11 | ||||||
| i magnitude | 17.89 (0.008) | 17.75 | ||||||
| z magnitude | 17.67 (0.01) | 17.57 | ||||||
| G magnitude | 18.37 (0.004) | 18.37 | 18.37 (0.004) | |||||
| BP magnitude | 19.11 (0.03) | |||||||
| RP magnitude | 17.61 (0.01) | |||||||
| Pan g magnitude | 19.29 (0.02) | |||||||
| Pan r magnitude | 18.33 (0.009) | |||||||
| Pan i magnitude | 17.93 (0.006) | |||||||
| Pan z magnitude | 17.76 (0.01) | |||||||
| Pan y magnitude | 17.70 (0.01) | |||||||
| E(B-V) | 0.001 | |||||||
* 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.