All names: WD 1157+046, Gaia DR2 3893330369981761536, SDSS J120004.09+042007.3, TIC 376785600, Gaia EDR3 3893330369981761536, Gaia DR3 3893330369981761536, SDSS J120004.09+042007.2, LAMOST J120004.09+042007.2, 2MASS J12000407+0420075, EPIC 201741246
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 00 04.09 (0.2) | 12 00 04.09 | 12 00 04.09 (0.2) | 12 00 04.09 (0.2) | 12 00 03.79 | |||
| Declination | 04 20 07.39 (0.1) | 04 20 07.34 | 04 20 07.39 (0.1) | 04 20 07.36 (0.1) | 04 19 59.88 | |||
| Spectral type | DA+? | WD K | ||||||
| Effective temperature | [K] | |||||||
| log(g) | [cgs] | |||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.63 (0.2) | 0.43 (0.3) | 0.63 (0.2) | ||||
| Distance | [pc] | 1596.12 (461) | 2350.84 (1722) | 1596.17 (461) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -6.160646144 (0.2) | -6.516065257 (0.6) | -6.161 (0.2) | ||||
| Proper motion (declination) | [mas/yr] | 1.739935931 (0.1) | 1.76312572 (0.3) | 1.74 (0.1) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | yes | |||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 16.69 (0.02) | |||||||
| H magnitude | 16.08 (0.02) | |||||||
| K magnitude | 15.96 (0.03) | |||||||
| u magnitude | 19.75 (0.03) | 19.64 (0.04) | 19.57 | |||||
| g magnitude | 19.09 (0.01) | 19.08 (0.01) | 19.06 | |||||
| r magnitude | 18.31 (0.008) | 18.34 (0.009) | 18.36 | |||||
| i magnitude | 17.98 (0.008) | 17.98 (0.008) | 17.97 | |||||
| z magnitude | 17.77 (0.02) | 17.76 (0.02) | 17.78 | |||||
| G magnitude | 18.51 (0.02) | 18.45 | 18.51 (0.003) | |||||
| BP magnitude | 18.85 (0.02) | 18.85 | ||||||
| RP magnitude | 17.61 (0.01) | 17.62 | ||||||
| Pan g magnitude | 19.02 (0.008) | |||||||
| Pan r magnitude | 18.33 (0.003) | |||||||
| Pan i magnitude | 18.00 (0.004) | |||||||
| Pan z magnitude | 17.85 (0.006) | |||||||
| Pan y magnitude | 17.74 (0.02) | |||||||
| E(B-V) | 0.023 | |||||||
* 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.