All names: Gaia EDR3 824739140805700352, US 911, SDSS J094446.90+470710.6, Gaia DR3 824739140805700352, Gaia DR2 824739140805700352, GALEX J094446.8+470711, USNO-A2.0 1350-07648922, SDSS J094446.92+470710.6, [BGK2006] J094446.92+470710.7, SDSS J094446.91+470710.5
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 44 46.91 (0.08) | 09 44 46.91 | 09 44 46.91 (0.09) | 09 44 46.91 (0.08) | 09 44 46.92 | |||
| Declination | 47 07 10.67 (0.07) | 47 07 10.64 | 47 07 10.67 (0.09) | 47 07 10.69 (0.07) | 47 07 10.67 | |||
| Spectral type | sd | SD_auto | ||||||
| Effective temperature | [K] | 14651.0 (162) | ||||||
| log(g) | [cgs] | 5.00 (0.001) | ||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.03 (0.1) | 0.08 (0.1) | 0.03 (0.1) | ||||
| Distance | [pc] | 33069.59 (124541) | 11884.85 (20993) | 33112.58 (124885) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -0.278559749 (0.1) | -0.075473178 (0.2) | -0.279 (0.1) | 3.1 | |||
| Proper motion (declination) | [mas/yr] | -1.166027145 (0.09) | -1.213226737 (0.2) | -1.166 (0.09) | -2.4 | |||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 17.70 | |||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 18.66 (0.02) | 18.66 (0.02) | 18.70 (0.04) | |||||
| g magnitude | 17.81 (0.005) | 17.80 (0.005) | 17.81 (0.02) | |||||
| r magnitude | 18.13 (0.007) | 18.13 (0.007) | 18.14 (0.02) | |||||
| i magnitude | 18.38 (0.01) | 18.38 (0.01) | 18.39 (0.01) | |||||
| z magnitude | 18.62 (0.04) | 18.62 (0.04) | 18.61 (0.04) | |||||
| G magnitude | 18.00 (0.01) | 18.03 | 18.00 (0.003) | |||||
| BP magnitude | 17.99 (0.01) | 17.98 | ||||||
| RP magnitude | 18.11 (0.01) | 18.10 | ||||||
| Pan g magnitude | 17.86 (0.005) | |||||||
| Pan r magnitude | 18.14 (0.002) | |||||||
| Pan i magnitude | 18.39 (0.004) | |||||||
| Pan z magnitude | 18.61 (0.01) | |||||||
| Pan y magnitude | 18.64 (0.01) | |||||||
| E(B-V) | 0.020 | |||||||
* 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.