All names: TIC 51700544, SDSS J222802.06+120733.3, Gaia EDR3 2730508416002618752, Gaia DR2 2730508416002618752, SDSS J222802.05+120733.3, SDSS J222802.05+120733.2, Gaia DR3 2730508416002618752, PM J22280+1207, WD 2225+118, J2228+1207, 2MASS J22280206+1207334, GALEX J222802.0+120733, WDJ222802.06+120733.38, 22280+1207, PSO J337.0084+12.1257, WIRED J222802.05+120733.3
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Coutu et al. 2019 | Blouin et al. 2019 | Gaia DR2 | Stilism | Limoges et al. 2015 | Dufour et al. 2007 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 28 02.02 (0.04) | 22 28 02.06 | 22 28 02.02 (0.07) | 22 28 02.06 | 22 28 02.02 (0.07) | 22 28 02.02 | 22 28 02.06 (0.04) | 22 28 02.02 | 22 28 02.05 | 22 28 02.16 | 22 28 02.05 | ||||||||||
| Declination | 12 07 32.64 (0.05) | 12 07 33.29 | 12 07 32.66 (0.07) | 12 07 33.38 | 12 07 32.66 (0.07) | 12 07 32.64 | 12 07 33.38 (0.05) | 12 07 32.66 | 12 07 33.32 | 12 07 32.52 | 12 07 33.32 | ||||||||||
| Spectral type | DZ | DZ | DZ | DZ | DZ | DZ | DZ | DZ | DZ | DZ | DZ | DZA | DZA | DZ | DZ | ||||||
| Effective temperature | [K] | 6918.0 (28) | 7189.0 (96) | 6885.0 (18) | 7088.0 (40) | 6887.0 (92) | 6675.0 (90) | 6950.0 (126) | 6760.0 (20) | 6903.0 (48) | 10080.0 (4) | 10082.0 (8) | |||||||||
| log(g) | [cgs] | 8.10 (0.006) | 8.23 (0.03) | 8.10 (0.005) | 8.07 (0.02) | 8.09 | 8.05 (0.03) | 8.00 (0) | 8.00 | 8.09 (0.01) | 7.42 (0.1) | 9.59 (0.3) | |||||||||
| Mass | [M☉] | 0.638 (0.006) | 0.723 (0.02) | 0.634 (0.005) | 0.629 | 0.606 (0.02) | 0.58 (0.1) | 0.628 (0.01) | |||||||||||||
| log(Luminosity) | [L☉] | -3.48 | |||||||||||||||||||
| Cooling age | [Gyr] | 1.9300 | 1.9000 | 2.0400 (0.1) | |||||||||||||||||
| log(H/He) | -4.0 | -4.0 | <-3.7352 | <-4.0 | |||||||||||||||||
| log(C/He) | |||||||||||||||||||||
| log(Ca/He) | -9.64 | -9.73 | -9.6846 (0.03) | -9.91 | -9.96 (0.02) | ||||||||||||||||
| log(Ca/H) | |||||||||||||||||||||
| log(N/He) | |||||||||||||||||||||
| log(O/He) | |||||||||||||||||||||
| log(Na/He) | |||||||||||||||||||||
| log(Mg/He) | |||||||||||||||||||||
| log(Al/He) | |||||||||||||||||||||
| log(Si/He) | |||||||||||||||||||||
| log(P/He) | |||||||||||||||||||||
| log(S/He) | |||||||||||||||||||||
| log(Cl/He) | |||||||||||||||||||||
| log(Sc/He) | |||||||||||||||||||||
| log(Ti/He) | |||||||||||||||||||||
| log(V/He) | |||||||||||||||||||||
| log(Cr/He) | |||||||||||||||||||||
| log(Mn/He) | |||||||||||||||||||||
| log(Fe/He) | |||||||||||||||||||||
| log(Co/He) | |||||||||||||||||||||
| log(Ni/He) | |||||||||||||||||||||
| log(Cu/He) | |||||||||||||||||||||
| log(Zn/He) | |||||||||||||||||||||
| log(Ga/He) | |||||||||||||||||||||
| log(Ge/He) | |||||||||||||||||||||
| log(Sr/He) | |||||||||||||||||||||
| Parallax | [mas] | 29.49 (0.05) | 29.49 (0.05) | 29.47 (0.09) | 29.47 (0.09) | 29.47 | 29.47 (0.09) | 29.47 (0.09) | 29.49 | 29.49 (0.05) | 29.47 (0.09) | ||||||||||
| Distance | [pc] | 33.91 (0.06) | 33.91 (0.06) | 33.93 (0.1) | 33.93 (0.1) | 33.93 (0.1) | 33.93 (0.1) | 33.93 (0.1) | 36.40 (1) | 34.00 | 33.91 | 33.91 (0.06) | 33.93 (0.1) | ||||||||
| Composition | He | He | He | He | He | He | |||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -32.82540841 (0.05) | -32.66428306 (0.1) | -32.825 (0.05) | -32.664 | -36.4 | |||||||||||||||
| Proper motion (declination) | [mas/yr] | -46.7864087 (0.05) | -46.7786965 (0.1) | -46.786 (0.05) | -46.779 | -51.3 | |||||||||||||||
| Variability | |||||||||||||||||||||
| Magnetic | |||||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||
| Binarity | |||||||||||||||||||||
| B magnitude | |||||||||||||||||||||
| V magnitude | |||||||||||||||||||||
| R magnitude | |||||||||||||||||||||
| I magnitude | |||||||||||||||||||||
| J magnitude | 15.85 (0.01) | 15.87 (0.07) | 15.87 (0.07) | ||||||||||||||||||
| H magnitude | 15.76 (0.1) | 15.76 (0.1) | 15.76 (0.1) | ||||||||||||||||||
| K magnitude | 15.95 (0.3) | 15.95 (0.3) | 15.95 (0.1) | ||||||||||||||||||
| u magnitude | 16.94 (0.007) | 16.95 (0.007) | 16.94 (0.007) | 16.97 (0.008) | 16.97 (0.01) | 16.97 | 16.97 (0.01) | ||||||||||||||
| g magnitude | 16.33 (0.004) | 16.32 (0.003) | 16.34 (0.004) | 16.36 (0.01) | 16.36 | 16.36 (0.02) | |||||||||||||||
| r magnitude | 16.22 (0.004) | 16.22 (0.003) | 16.21 (0.004) | 16.21 (0.01) | 16.21 | 16.21 (0.01) | |||||||||||||||
| i magnitude | 16.25 (0.005) | 16.28 (0.002) | 16.25 (0.005) | 16.27 (0.02) | 16.27 | 16.25 (0.02) | |||||||||||||||
| z magnitude | 16.37 (0.008) | 16.36 (0.004) | 16.36 (0.008) | 16.38 (0.01) | 16.38 | 16.35 (0.02) | |||||||||||||||
| G magnitude | 16.20 (0.004) | 16.22 | 16.22 | 16.20 | 16.20 (0.003) | 16.22 | |||||||||||||||
| BP magnitude | 16.36 (0.004) | 16.37 | 16.37 | ||||||||||||||||||
| RP magnitude | 15.95 (0.006) | 15.95 | 15.95 | ||||||||||||||||||
| Pan g magnitude | 16.32 (0.003) | 16.32 (0.003) | 16.32 (0.003) | ||||||||||||||||||
| Pan r magnitude | 16.22 (0.003) | 16.22 (0.003) | 16.22 (0.003) | ||||||||||||||||||
| Pan i magnitude | 16.28 (0.002) | 16.28 (0.002) | 16.28 (0.002) | ||||||||||||||||||
| Pan z magnitude | 16.36 (0.003) | 16.36 (0.004) | 16.36 (0.004) | ||||||||||||||||||
| Pan y magnitude | 16.44 (0.007) | 16.44 (0.009) | 16.44 (0.009) | ||||||||||||||||||
| 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.