All names: Gaia EDR3 639722906154728960, SDSS J094634.49+203003.3, WD 0943+207, TIC 87975331, WIRED J094634.49+203003.4, SDSS J094634.49+203003.4, Gaia DR2 639722906154728960, Gaia DR3 639722906154728960, 2MASS J09463451+2030036, GALEX J094634.4+203003
| 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) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 46 34.46 (0.2) | 09 46 34.49 | 09 46 34.46 (0.3) | 09 46 34.49 | 09 46 34.50 (0.2) | 09 46 34.68 | 09 46 34.49 | ||||
| Declination | 20 30 03.22 (0.1) | 20 30 03.38 | 20 30 03.23 (0.2) | 20 30 03.38 | 20 30 03.45 (0.1) | 20 30 00.36 | 20 30 03.40 | ||||
| Spectral type | DA+M | DA+M | DA4.9 M | DA+M | DA | ||||||
| Effective temperature | [K] | 10307.0 (141) | 8399.0 (83) | ||||||||
| log(g) | [cgs] | 8.03 (0.2) | 6.39 (0.2) | ||||||||
| Mass | [M☉] | 0.62 (0.1) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 2.93 (0.2) | 2.86 (0.3) | 2.93 (0.2) | |||||||
| Distance | [pc] | 341.55 (25) | 350.15 (38) | 341.55 (25) | |||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -38.85457805 (0.2) | -38.8176002 (0.5) | -38.855 (0.2) | |||||||
| Proper motion (declination) | [mas/yr] | -14.46819622 (0.2) | -14.66045813 (0.4) | -14.468 (0.2) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | |||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.10 (0.07) | ||||||||||
| H magnitude | 15.71 (0.1) | ||||||||||
| K magnitude | 15.16 (0.1) | ||||||||||
| u magnitude | 19.48 (0.03) | 19.49 | 19.48 (0.03) | 19.48 | 19.48 (0.03) | ||||||
| g magnitude | 18.95 (0.009) | 18.96 | 18.95 (0.009) | 18.95 | 18.95 (0.02) | ||||||
| r magnitude | 18.89 (0.01) | 18.90 | 18.89 (0.01) | 18.89 | 18.89 (0.01) | ||||||
| i magnitude | 18.34 (0.009) | 18.34 | 18.34 (0.009) | 18.34 | 18.35 (0.02) | ||||||
| z magnitude | 17.68 (0.02) | 17.68 | 17.69 (0.02) | 17.67 | 17.68 (0.02) | ||||||
| G magnitude | 18.57 (0.03) | 18.59 | 18.57 (0.003) | ||||||||
| BP magnitude | 18.98 (0.03) | 19.17 | |||||||||
| RP magnitude | 17.88 (0.02) | 17.89 | |||||||||
| Pan g magnitude | 18.95 (0.007) | ||||||||||
| Pan r magnitude | 18.89 (0.005) | ||||||||||
| Pan i magnitude | 18.35 (0.007) | ||||||||||
| Pan z magnitude | 17.81 (0.004) | ||||||||||
| Pan y magnitude | 17.46 (0.01) | ||||||||||
| E(B-V) | 0.022 | ||||||||||
* 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.