All names: SDSS J222301.72+220125.0, ** SLN 44B, Gaia DR2 1874954645786146304, Gaia DR3 1874954645786146304, SDSS J222301.72+220124.9, HS 2220+2146B, Gaia EDR3 1874954641491354624, 22230+2201S, UCAC4 561-138950, J2223+2201, WDS J22230+2202B, PM J22230+2201S, WDJ222301.71+220125.28, 2MASS J22230169+2201253, WD 2220+217, TIC 385468475, USNO-B1.0 1120-00619684
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Kilic et al. 2020 | MWDD H | Gaia DR2 | Stilism | Limoges et al. 2015 | Koester et al. 2009 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 23 01.66 (0.05) | 22 23 01.66 (0.05) | 22 23 01.76 | 22 23 01.71 (0.05) | 22 23 01.76 | 22 23 01.63 | ||||||||
| Declination | 22 01 30.70 (0.05) | 22 01 30.73 (0.05) | 22 01 24.28 | 22 01 25.28 (0.05) | 22 01 24.32 | 22 01 23.52 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA3.5 | |||||||
| Effective temperature | [K] | 13034.0 (87) | 13028.0 (88) | 13295.0 | 17730.0 (336) | 14601.0 (32) | 12908.0 (204) | |||||||
| log(g) | [cgs] | 8.22 (0.006) | 8.22 (0.006) | 8.24 | 8.46 (0.06) | 8.08 (0.01) | 8.22 (0.01) | |||||||
| Mass | [M☉] | 0.742 (0.005) | 0.745 (0.006) | 0.755 | 0.91 (0.04) | 0.741 (0.01) | ||||||||
| log(Luminosity) | [L☉] | -2.12 | ||||||||||||
| Cooling age | [Gyr] | 0.4020 | ||||||||||||
| log(H/He) | ||||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | ||||||||||||||
| log(Ca/H) | ||||||||||||||
| log(C/H) | ||||||||||||||
| log(N/H) | ||||||||||||||
| log(O/H) | ||||||||||||||
| log(Na/H) | ||||||||||||||
| log(Mg/H) | ||||||||||||||
| log(Al/H) | ||||||||||||||
| log(Si/H) | ||||||||||||||
| log(P/H) | ||||||||||||||
| log(S/H) | ||||||||||||||
| log(Sc/H) | ||||||||||||||
| log(Ti/H) | ||||||||||||||
| log(Cr/H) | ||||||||||||||
| log(Mn/H) | ||||||||||||||
| log(Fe/H) | ||||||||||||||
| log(Ni/H) | ||||||||||||||
| Parallax | [mas] | 14.12 (0.06) | 14.06 (0.06) | 14.20 | 14.20 (0.06) | 14.25 (0.07) | ||||||||
| Distance | [pc] | 70.81 (0.3) | 71.10 (0.3) | 74.70 (2) | 70.44 | 70.44 (0.3) | 70.17 (0.4) | |||||||
| Composition | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 51.90321877 (0.05) | 51.98472024 (0.1) | 54.0 | 51.067 (0.06) | 51.14080638 | ||||||||
| Proper motion (declination) | [mas/yr] | -61.69580474 (0.06) | -61.55774032 (0.1) | -62.0 | -62.337 (0.06) | -62.34896919 | ||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 15.00 | 15.24 (0.07) | ||||||||||||
| V magnitude | 15.22 (0.1) | |||||||||||||
| R magnitude | 16.25 (0.2) | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.42 | 16.41 (0.1) | ||||||||||||
| H magnitude | 15.71 | |||||||||||||
| K magnitude | 16.10 | |||||||||||||
| u magnitude | 16.36 | 16.36 (0.006) | 16.36 (0.006) | |||||||||||
| g magnitude | 15.99 | 16.00 (0.004) | 16.00 (0.004) | |||||||||||
| r magnitude | 16.20 | 16.21 (0.005) | 16.21 (0.005) | |||||||||||
| i magnitude | 16.45 | 16.46 (0.005) | 16.46 (0.005) | |||||||||||
| z magnitude | 16.69 | 16.70 (0.01) | 16.70 (0.01) | |||||||||||
| G magnitude | 15.77 (0.004) | 15.79 | 16.11 | 16.11 (0.003) | 16.14 | |||||||||
| BP magnitude | 15.70 (0.004) | 15.68 | 16.10 | |||||||||||
| RP magnitude | 15.93 (0.003) | 15.94 | 16.18 | |||||||||||
| Pan g magnitude | 16.00 (0.002) | |||||||||||||
| Pan r magnitude | 16.24 (0.004) | |||||||||||||
| Pan i magnitude | 16.48 (0.003) | |||||||||||||
| Pan z magnitude | 16.70 (0.004) | |||||||||||||
| Pan y magnitude | 16.85 (0.01) | |||||||||||||
| E(B-V) | 0.009 | |||||||||||||
* 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.