All names: LAMOST J123442.93+152728.8, SDSS J123442.90+152728.6, GALEX J123442.9+152728, Gaia DR3 3933449904307657216, Gaia EDR3 3933449904307657216, SDSS J123442.94+152728.8, SDSS J123442.93+152728.8, Gaia DR2 3933449900012366464
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Guo et al. 2015 | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 34 42.88 (0.2) | 12 34 42.93 | 12 34 42.88 (0.2) | 12 34 42.88 | 12 34 42.94 (0.2) | 12 34 42.94 | |||||
| Declination | 15 27 28.61 (0.1) | 15 27 28.84 | 15 27 28.62 (0.2) | 15 27 28.61 | 15 27 28.94 (0.1) | 15 27 28.83 | |||||
| Spectral type | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 14498.0 (862) | 13666.0 (359) | ||||||||
| log(g) | [cgs] | 7.98 (0.07) | 8.04 (0.06) | ||||||||
| Mass | [M☉] | 0.598 (0.06) | 0.63 (0.04) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 3.95 (0.2) | 3.81 (0.3) | 3.95 | 3.95 (0.2) | ||||||
| Distance | [pc] | 252.92 (12) | 262.34 (17) | 252.92 | 252.92 (12) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -54.13905704 (0.2) | -54.01137395 (0.4) | -54.139 (0.2) | |||||||
| Proper motion (declination) | [mas/yr] | -21.17270098 (0.2) | -21.12957667 (0.3) | -21.173 (0.2) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 18.62 (0.09) | ||||||||||
| H magnitude | 18.60 (0.2) | ||||||||||
| K magnitude | |||||||||||
| u magnitude | 18.63 (0.02) | 18.63 (0.02) | 18.62 (0.04) | ||||||||
| g magnitude | 18.29 (0.007) | 18.29 (0.007) | 18.33 (0.04) | ||||||||
| r magnitude | 18.50 (0.008) | 18.50 (0.008) | 18.53 (0.02) | ||||||||
| i magnitude | 18.78 (0.01) | 18.78 (0.01) | 18.81 (0.04) | ||||||||
| z magnitude | 18.92 (0.06) | 18.92 (0.06) | 18.94 (0.06) | ||||||||
| G magnitude | 18.39 (0.02) | 18.41 | 18.39 | 18.39 (0.004) | |||||||
| BP magnitude | 18.37 (0.02) | 18.34 | |||||||||
| RP magnitude | 18.47 (0.03) | 18.51 | |||||||||
| Pan g magnitude | 18.28 (0.009) | ||||||||||
| Pan r magnitude | 18.51 (0.005) | ||||||||||
| Pan i magnitude | 18.74 (0.009) | ||||||||||
| Pan z magnitude | 18.96 (0.01) | ||||||||||
| Pan y magnitude | 19.10 (0.05) | ||||||||||
| E(B-V) | 0.025 | ||||||||||
* 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.