All names: 2MASS J12340916+1936308, SDSS J123409.18+193630.7, Gaia DR3 3949096573246853504, Gaia DR2 3949096568951005952, WIRED J123409.18+193630.7, SDSS J123409.18+193630.8, Gaia EDR3 3949096573246853504, TIC 334602624, SDSS J123409.19+193630.5, GALEX J123409.2+193631
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 34 09.19 (0.3) | 12 34 09.18 | 12 34 09.19 (0.7) | 12 34 09.18 | 12 34 09.17 (0.3) | 12 34 09.18 | |||
| Declination | 19 36 30.59 (0.3) | 19 36 30.76 | 19 36 30.60 (0.6) | 19 36 30.78 | 19 36 30.99 (0.3) | 19 36 30.77 | |||
| Spectral type | DA+M | DA+M | DA+M | ||||||
| Effective temperature | [K] | 15601.0 (397) | 10258.0 (52) | ||||||
| log(g) | [cgs] | 7.87 (0.09) | 8.02 (0.06) | ||||||
| Mass | [M☉] | 0.54 (0.05) | |||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 3.05 (0.4) | 0.88 (1) | 3.05 (0.4) | |||||
| Distance | [pc] | 328.08 (40) | 1131.09 (1229) | 331.00 (19) | 328.08 (40) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 15.93021232 (0.4) | 14.719 (0.9) | 15.93 (0.4) | |||||
| Proper motion (declination) | [mas/yr] | -25.13748093 (0.4) | -25.961 (0.8) | -25.137 (0.4) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | WDMS | |||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 15.96 (0.06) | ||||||||
| H magnitude | 15.13 (0.08) | ||||||||
| K magnitude | 14.88 (0.1) | ||||||||
| u magnitude | 18.80 (0.02) | 18.80 | 18.80 (0.02) | 18.80 (0.02) | |||||
| g magnitude | 18.47 (0.008) | 18.51 | 18.51 (0.02) | 18.51 (0.02) | |||||
| r magnitude | 18.64 (0.009) | 18.67 | 18.67 (0.02) | 18.67 (0.02) | |||||
| i magnitude | 18.19 (0.009) | 18.23 | 18.23 (0.02) | 18.23 (0.02) | |||||
| z magnitude | 17.47 (0.01) | 17.51 | 17.51 (0.03) | 17.51 (0.03) | |||||
| G magnitude | 18.56 (0.02) | 18.48 | 18.56 (0.006) | ||||||
| BP magnitude | 18.58 (0.02) | 18.56 | |||||||
| RP magnitude | 17.63 (0.02) | 17.63 | |||||||
| Pan g magnitude | 18.51 (0.009) | ||||||||
| Pan r magnitude | 18.63 (0.007) | ||||||||
| Pan i magnitude | 18.23 (0.007) | ||||||||
| Pan z magnitude | 17.63 (0.004) | ||||||||
| Pan y magnitude | 17.21 (0.007) | ||||||||
| E(B-V) | 0.021 | ||||||||
* 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.