All names: SDSS J204138.37+005952.0, WD 2039+008, Gaia DR3 4231309700217694208, WISEA J204138.37+005951.8, TIC 466819007, WISE J204138.37+005951.9, SDSS J204138.38+005952.0, 2MASS J20413836+0059522, Gaia EDR3 4231309700217694208, Gaia DR2 4231309700217694208
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 41 38.38 (0.1) | 20 41 38.38 | 20 41 38.38 (0.2) | 20 41 38.38 | 20 41 38.37 (0.1) | 20 41 37.97 | |||
| Declination | 00 59 51.69 (0.1) | 00 59 52.04 | 00 59 51.70 (0.2) | 00 59 52.01 | 00 59 51.98 (0.1) | 00 59 51.36 | |||
| Spectral type | WD+M | M4V | WD M | ||||||
| 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] | 2.94 (0.2) | 1.85 (0.3) | 2.94 (0.2) | |||||
| Distance | [pc] | 339.91 (22) | 541.94 (79) | 1344.00 (402) | 339.92 (22) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 9.872343038 (0.2) | 11.75693465 (0.4) | 9.872 (0.2) | |||||
| Proper motion (declination) | [mas/yr] | -17.93316842 (0.2) | -17.43321706 (0.3) | -17.933 (0.2) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 14.68 (0.03) | ||||||||
| H magnitude | 14.08 (0.05) | ||||||||
| K magnitude | 13.81 (0.04) | ||||||||
| u magnitude | 20.65 (0.08) | 20.86 | 20.65 (0.08) | 20.86 | |||||
| g magnitude | 19.02 (0.01) | 19.36 | 19.02 (0.01) | 19.36 | |||||
| r magnitude | 17.95 (0.007) | 18.27 | 17.95 (0.007) | 18.27 | |||||
| i magnitude | 16.81 (0.005) | 16.92 | 16.81 (0.005) | 16.92 | |||||
| z magnitude | 16.08 (0.008) | 16.19 | 16.08 (0.008) | 16.19 | |||||
| G magnitude | 17.69 (0.03) | 17.68 | 17.69 (0.003) | ||||||
| BP magnitude | 18.86 (0.03) | 18.79 | |||||||
| RP magnitude | 16.36 (0.007) | 16.37 | |||||||
| Pan g magnitude | 19.08 (0.02) | ||||||||
| Pan r magnitude | 18.18 (0.02) | ||||||||
| Pan i magnitude | 16.92 (0.009) | ||||||||
| Pan z magnitude | 16.26 (0.003) | ||||||||
| Pan y magnitude | 15.99 (0.002) | ||||||||
| E(B-V) | 0.036 | ||||||||
* 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.