All names: 2MASS J09400240+5342029, Gaia EDR3 1021336424056871040, SDSS J094002.41+534202.9, SDSS J094002.40+534203.0, Gaia DR2 1021336419761413504, SDSS J094002.40+534202.9, Gaia DR3 1021336424056871040, WD 0936+539, TIC 357153776, GALEX J094002.3+534203
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 40 02.43 (0.5) | 09 40 02.41 | 09 40 02.43 (0.6) | 09 40 02.41 (0.5) | 09 40 02.66 | 09 40 02.40 | |||
| Declination | 53 42 02.71 (0.4) | 53 42 02.94 | 53 42 02.72 (0.6) | 53 42 03.03 (0.4) | 53 41 59.28 | 53 42 02.96 | |||
| Spectral type | DA+M | DA4.5 M | DA+M | ||||||
| Effective temperature | [K] | 6300.0 (3) | |||||||
| log(g) | [cgs] | 10.00 (0.003) | |||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 2.48 (0.6) | -1.52 (1) | 2.48 (0.6) | |||||
| Distance | [pc] | 402.63 (105) | 402.63 (105) | ||||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | 13.98684403 (0.6) | 16.30251598 (1) | 13.987 (0.6) | |||||
| Proper motion (declination) | [mas/yr] | -19.72942722 (0.6) | -19.33325509 (2) | -19.729 (0.6) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | WDMS | ||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 15.72 (0.06) | ||||||||
| H magnitude | 15.04 (0.08) | ||||||||
| K magnitude | 14.80 (0.08) | ||||||||
| u magnitude | 20.81 (0.07) | 20.81 (0.07) | 20.74 | 20.81 (0.07) | |||||
| g magnitude | 20.16 (0.02) | 20.13 (0.02) | 20.09 | 20.13 (0.04) | |||||
| r magnitude | 19.44 (0.01) | 19.44 (0.01) | 19.44 | 19.47 (0.03) | |||||
| i magnitude | 18.08 (0.008) | 18.09 (0.009) | 18.10 | 18.12 (0.01) | |||||
| z magnitude | 17.19 (0.01) | 17.19 (0.01) | 17.18 | 17.21 (0.02) | |||||
| G magnitude | 19.17 (0.05) | 19.02 | 19.17 (0.01) | ||||||
| BP magnitude | 20.01 (0.05) | 19.75 | |||||||
| RP magnitude | 17.57 (0.01) | 17.56 | |||||||
| Pan g magnitude | 20.08 (0.02) | ||||||||
| Pan r magnitude | 19.51 (0.01) | ||||||||
| Pan i magnitude | 18.14 (0.005) | ||||||||
| Pan z magnitude | 17.36 (0.01) | ||||||||
| Pan y magnitude | 16.98 (0.01) | ||||||||
| E(B-V) | 0.024 | ||||||||
* 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.