All names: GALEX J124258.3+654219, PM J12429+6542, Gaia EDR3 1680452683804651520, 12429+6542, PSO J190.7423+65.7050, 2MASS J12425838+6542199, MUSR 39, USNO-B1.0 1557-00144114, J1242+6542, SDSS J124258.39+654219.9, LSPM J1242+6542, WDJ124258.40+654219.95, TIC 355896647, SDSS J124258.40+654219.9, Gaia DR3 1680452683804651520, Gaia DR2 1680452683804651520
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Kilic et al. 2020 | Blouin et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 42 58.13 (0.06) | 12 42 58.14 (0.07) | 12 42 58.13 | 12 42 58.40 (0.06) | 12 42 58.14 | ||||||||||
| Declination | 65 42 17.94 (0.06) | 65 42 18.00 (0.07) | 65 42 17.94 | 65 42 19.95 (0.06) | 65 42 18.00 | ||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | ||||||||
| Effective temperature | [K] | 6673.0 (27) | 6622.0 (26) | 6673.0 (27) | 6545.0 (50) | 6559.0 | 6312.0 | 6960.0 (121) | 6796.0 (63) | ||||||
| log(g) | [cgs] | 8.03 (0.009) | 8.01 (0.009) | 8.03 (0.009) | 7.99 (0.02) | 7.99 | 7.86 | 8.85 (0.1) | 8.07 (0.02) | ||||||
| Mass | [M☉] | 0.608 (0.007) | 0.595 (0.008) | 0.606 (0.008) | 0.583 (0.01) | 0.583 | 0.489 | 1.12 (0.07) | 0.634 (0.01) | ||||||
| log(Luminosity) | [L☉] | -4.03 | |||||||||||||
| Cooling age | [Gyr] | 1.8300 | 1.7640 (0.07) | 1.7480 | 1.7040 | ||||||||||
| 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] | 17.70 (0.07) | 17.67 (0.09) | 17.68 (0.09) | 17.67 (0.09) | 17.70 | 17.70 (0.07) | 17.67 (0.09) | |||||||
| Distance | [pc] | 56.49 (0.2) | 56.59 (0.3) | 56.58 (0.3) | 56.58 (0.3) | 33.00 (1) | 56.49 | 56.49 (0.2) | 56.58 (0.3) | ||||||
| Composition | H | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -102.8986071 (0.08) | -103.017 (0.1) | -106.0 | -102.899 (0.08) | -103.0174983 | |||||||||
| Proper motion (declination) | [mas/yr] | -125.3554983 (0.09) | -125.596 (0.1) | -121.0 | -125.355 (0.09) | -125.5963969 | |||||||||
| Variability | |||||||||||||||
| Magnetic | |||||||||||||||
| Bd | [MG] | ||||||||||||||
| Infrared excess (disk) | |||||||||||||||
| Binarity | |||||||||||||||
| B magnitude | |||||||||||||||
| V magnitude | |||||||||||||||
| R magnitude | 16.80 | ||||||||||||||
| I magnitude | |||||||||||||||
| J magnitude | 16.55 (0.1) | 16.55 (0.1) | 16.55 | 16.55 (0.1) | |||||||||||
| H magnitude | 17.14 (0.03) | 17.14 | |||||||||||||
| K magnitude | 16.10 (0.03) | 16.10 | |||||||||||||
| u magnitude | 18.29 (0.01) | 18.29 | 18.26 (0.01) | 18.26 (0.01) | |||||||||||
| g magnitude | 17.66 | 17.65 (0.004) | 17.68 (0.005) | ||||||||||||
| r magnitude | 17.43 | 17.43 (0.006) | 17.43 (0.005) | ||||||||||||
| i magnitude | 17.34 | 17.37 (0.003) | 17.34 (0.006) | ||||||||||||
| z magnitude | 17.35 | 17.39 (0.005) | 17.35 (0.01) | ||||||||||||
| G magnitude | 17.41 (0.008) | 17.43 | 17.41 | 17.41 (0.003) | 17.43 | ||||||||||
| BP magnitude | 17.62 (0.008) | 17.62 | 17.62 | ||||||||||||
| RP magnitude | 17.03 (0.006) | 17.05 | 17.05 | ||||||||||||
| Pan g magnitude | 17.65 (0.004) | 17.65 (0.004) | 17.65 (0.004) | ||||||||||||
| Pan r magnitude | 17.43 (0.005) | 17.43 (0.006) | 17.43 (0.006) | ||||||||||||
| Pan i magnitude | 17.37 (0.003) | 17.37 (0.003) | 17.37 (0.003) | ||||||||||||
| Pan z magnitude | 17.39 (0.004) | 17.39 (0.005) | 17.39 (0.005) | ||||||||||||
| Pan y magnitude | 17.40 (0.01) | 17.40 (0.02) | 17.40 (0.01) | ||||||||||||
| E(B-V) | 0.004 | ||||||||||||||
* 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.