All names: SDSS J083402.87+075803.3, [VV2010] J083402.9+075803, Gaia DR3 596463273994426112, WISEA J083402.86+075803.1, WIRED J083402.87+075803.3, SDSS J083402.88+075803.3, Gaia DR2 596463273994426112, ULAS J083402.87+075803.4, [VV2006] J083402.9+075803, WISE J083402.86+075803.0, Gaia EDR3 596463273994426112
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Simbad | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|
| Right ascension | 08 34 02.88 (0.3) | 08 34 02.87 | 08 34 02.88 (0.4) | 08 34 02.88 (0.3) | 08 34 02.88 | ||
| Declination | 07 58 03.32 (0.2) | 07 58 03.32 | 07 58 03.32 (0.3) | 07 58 03.32 (0.2) | 07 58 03.30 | ||
| Spectral type | DC | ||||||
| Effective temperature | [K] | 10084.0 (12) | |||||
| log(g) | [cgs] | 9.53 (0.5) | |||||
| Mass | [M☉] | ||||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | ||||||
| log(H/He) | |||||||
| log(C/He) | |||||||
| log(Ca/He) | |||||||
| log(Ca/H) | |||||||
| Parallax | [mas] | -0.30 (0.3) | -0.52 (0.5) | ||||
| Distance | [pc] | ||||||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | 0.029968848 (0.4) | -0.487573543 (0.8) | 0.03 (0.4) | |||
| Proper motion (declination) | [mas/yr] | -0.192146956 (0.3) | 0.197647206 (0.5) | -0.192 (0.3) | |||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | 19.95 | ||||||
| V magnitude | 19.73 | ||||||
| R magnitude | |||||||
| I magnitude | |||||||
| J magnitude | 18.07 (0.03) | ||||||
| H magnitude | 17.54 (0.04) | ||||||
| K magnitude | 16.73 (0.04) | ||||||
| u magnitude | 19.81 (0.03) | 19.83 (0.03) | 19.84 (0.04) | ||||
| g magnitude | 19.48 (0.01) | 19.49 (0.02) | 19.50 (0.02) | ||||
| r magnitude | 19.38 (0.01) | 19.39 (0.02) | 19.39 (0.02) | ||||
| i magnitude | 19.28 (0.02) | 19.31 (0.02) | 19.31 (0.02) | ||||
| z magnitude | 19.20 (0.04) | 19.23 (0.05) | 19.23 (0.05) | ||||
| G magnitude | 19.40 (0.07) | 19.39 | 19.40 (0.008) | ||||
| BP magnitude | 19.55 (0.07) | 19.47 | |||||
| RP magnitude | 18.97 (0.05) | 18.97 | |||||
| Pan g magnitude | 19.45 (0.007) | ||||||
| Pan r magnitude | 19.38 (0.01) | ||||||
| Pan i magnitude | 19.34 (0.01) | ||||||
| Pan z magnitude | 19.24 (0.01) | ||||||
| Pan y magnitude | 19.31 (0.05) | ||||||
| E(B-V) | |||||||
* 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.