All names: USNO-A2.0 1275-08064874, Gaia DR3 1532585343579127552, LAMOST J121729.24+384314.2, SDSS J121729.25+384314.2, Gaia EDR3 1532585343579127552, SDSS J121729.24+384314.2, Gaia DR2 1532585343579127552, GALEX 2686760033801211206
| 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 17 29.20 (0.09) | 12 17 29.24 | 12 17 29.21 (0.1) | 12 17 29.20 | 12 17 29.28 (0.1) | 12 17 29.25 | |||||
| Declination | 38 43 14.06 (0.06) | 38 43 14.25 | 38 43 14.07 (0.09) | 38 43 14.06 | 38 43 14.22 (0.09) | 38 43 14.22 | |||||
| Spectral type | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 10039.0 (187) | 9800.0 (46) | ||||||||
| log(g) | [cgs] | 8.04 (0.04) | 8.26 (0.06) | ||||||||
| Mass | [M☉] | 0.624 (0.03) | 0.753 (0.04) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 6.88 (0.1) | 6.88 (0.2) | 6.88 | 6.88 (0.2) | ||||||
| Distance | [pc] | 145.33 (3) | 145.26 (4) | 145.33 | 145.26 (4) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -53.59190026 (0.1) | -53.39167754 (0.2) | -53.392 (0.2) | |||||||
| Proper motion (declination) | [mas/yr] | -10.35944632 (0.1) | -10.17030794 (0.2) | -10.17 (0.2) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 17.60 (0.3) | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 17.80 (0.3) | ||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 18.50 (0.02) | 18.50 (0.02) | 18.51 (0.02) | ||||||||
| g magnitude | 18.04 (0.006) | 18.04 (0.006) | 18.05 (0.02) | ||||||||
| r magnitude | 18.13 (0.007) | 18.13 (0.007) | 18.12 (0.01) | ||||||||
| i magnitude | 18.22 (0.009) | 18.21 (0.009) | 18.22 (0.01) | ||||||||
| z magnitude | 18.39 (0.03) | 18.39 (0.03) | 18.39 (0.03) | ||||||||
| G magnitude | 18.04 (0.01) | 18.07 | 18.04 | 18.07 (0.001) | |||||||
| BP magnitude | 18.12 (0.01) | 18.08 | |||||||||
| RP magnitude | 17.95 (0.01) | 17.91 | |||||||||
| Pan g magnitude | 18.04 (0.008) | ||||||||||
| Pan r magnitude | 18.11 (0.009) | ||||||||||
| Pan i magnitude | 18.26 (0.009) | ||||||||||
| Pan z magnitude | 18.43 (0.01) | ||||||||||
| Pan y magnitude | 18.49 (0.01) | ||||||||||
| E(B-V) | 0.006 | ||||||||||
* 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.