All names: USNO-B1.0 0912-00556326, PHL 5142, Gaia DR3 2702527013306504064, SDSS J222630.70+011212.6, [VV2006b] J222630.7+011213, Gaia EDR3 2702527013306504064, J2226+0112, [VV2010b] J222630.7+011213, SDSS J222630.68+011212.9, SDSS J222630.76+011212.1, SDSS J222630.75+011212.0, LP 640-21, NLTT 53848, WDJ222630.67+011213.05, LSPM J2226+0112, SDSS J222630.66+011213.1, Gaia DR2 2702527013306504064
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 26 30.83 (0.2) | 22 26 30.82 | 22 26 30.83 | 22 26 30.67 (0.2) | 22 26 30.82 | ||||||
| Declination | 01 12 11.20 (0.1) | 01 12 11.26 | 01 12 11.20 | 01 12 13.06 (0.1) | 01 12 11.26 | ||||||
| Spectral type | DC | DC | DC | DC | DC | ||||||
| Effective temperature | [K] | 6885.0 (38) | 6937.0 (39) | 6828.0 (171) | |||||||
| log(g) | [cgs] | 8.20 (0.02) | 8.22 (0.02) | 8.24 (0.04) | |||||||
| Mass | [M☉] | 0.7 (0.01) | 0.716 (0.02) | 0.727 (0.04) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 2.5600 | |||||||||
| log(H/He) | -3.4 | -3.4 | |||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| 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] | 15.43 (0.2) | 15.51 (0.3) | 15.51 (0.3) | 15.43 | 15.43 (0.2) | 15.51 (0.3) | ||||
| Distance | [pc] | 64.82 (0.8) | 64.47 (1) | 64.47 (1) | 64.82 | 64.82 (0.8) | 64.47 (1) | ||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 148.0179953 (0.1) | 147.9799749 (0.3) | 148.018 (0.1) | 147.9799749 | ||||||
| Proper motion (declination) | [mas/yr] | -115.8797576 (0.2) | -115.6407645 (0.4) | -115.88 (0.2) | -115.6407645 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 18.36 | ||||||||||
| V magnitude | 18.00 | ||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 17.40 (0.03) | 17.40 (0.03) | |||||||||
| H magnitude | 17.41 (0.05) | ||||||||||
| K magnitude | 17.29 (0.1) | 17.29 (0.1) | |||||||||
| u magnitude | 18.57 (0.03) | 18.57 (0.02) | 18.63 (0.02) | ||||||||
| g magnitude | 18.06 (0.006) | 18.08 (0.006) | |||||||||
| r magnitude | 17.94 (0.007) | 17.96 (0.007) | |||||||||
| i magnitude | 17.93 (0.008) | 17.97 (0.008) | |||||||||
| z magnitude | 17.96 (0.02) | 17.98 (0.02) | |||||||||
| G magnitude | 17.92 (0.01) | 17.94 | 17.92 | 17.92 (0.003) | 17.94 | ||||||
| BP magnitude | 18.11 (0.01) | 18.07 | 18.07 | ||||||||
| RP magnitude | 17.67 (0.02) | 17.60 | 17.60 | ||||||||
| Pan g magnitude | 18.08 (0.005) | 18.08 (0.004) | |||||||||
| Pan r magnitude | 17.95 (0.005) | 17.95 (0.005) | |||||||||
| Pan i magnitude | 17.97 (0.003) | 17.97 (0.002) | |||||||||
| Pan z magnitude | 18.03 (0.009) | 18.03 (0.01) | |||||||||
| Pan y magnitude | 18.07 (0.02) | 18.07 (0.02) | |||||||||
| E(B-V) | 0.002 | ||||||||||
* 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.