All names: SDSS J084838.16+461315.3, Gaia DR2 1013428079299173888, SDSS J084838.16+461315.2, GALEX J084838.2+461314, Gaia EDR3 1013428079299173888, Gaia DR3 1013428079299173888, SDSS J084838.16+461315.27, SDSS J084838.15+461315.2
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|
| Right ascension | 08 48 38.15 (0.6) | 08 48 38.16 | 08 48 38.15 (0.9) | 08 48 38.15 (0.6) | |||
| Declination | 46 13 15.16 (0.6) | 46 13 15.26 | 46 13 15.16 (0.6) | 46 13 15.27 (0.6) | |||
| Spectral type | DB+M | DB | |||||
| Effective temperature | [K] | 47571.0 (963) | |||||
| log(g) | [cgs] | 7.72 (0.4) | |||||
| Mass | [M☉] | 0.521 (0.1) | |||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | ||||||
| log(H/He) | |||||||
| log(C/He) | |||||||
| log(Ca/He) | |||||||
| log(Ca/H) | |||||||
| Parallax | [mas] | 2.01 (1) | 1.84 (1) | 2.01 (1) | |||
| Distance | [pc] | 496.44 (273) | 544.26 (361) | 496.45 (273) | |||
| Composition | |||||||
| Proper motion (right ascension) | [mas/yr] | -4.009646862 (1) | -5.011280679 (2) | -4.01 (1) | |||
| Proper motion (declination) | [mas/yr] | -7.054184365 (0.8) | -5.589114619 (1) | -7.054 (0.8) | |||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | |||||||
| B magnitude | |||||||
| V magnitude | |||||||
| R magnitude | |||||||
| I magnitude | |||||||
| J magnitude | |||||||
| H magnitude | |||||||
| K magnitude | |||||||
| u magnitude | 20.76 (0.06) | 20.71 (0.06) | 20.71 (0.06) | ||||
| g magnitude | 20.54 (0.03) | 20.55 (0.03) | 20.55 (0.03) | ||||
| r magnitude | 20.72 (0.04) | 20.75 (0.04) | 20.75 (0.04) | ||||
| i magnitude | 21.34 (0.09) | 21.35 (0.2) | 20.99 (0.06) | ||||
| z magnitude | 22.83 (0.7) | 22.83 (1) | 21.08 (0.3) | ||||
| G magnitude | 20.61 (0.07) | 20.68 | 20.61 (0.007) | ||||
| BP magnitude | 20.67 (0.07) | 20.41 | |||||
| RP magnitude | 19.95 (0.1) | 19.70 | |||||
| Pan g magnitude | |||||||
| Pan r magnitude | |||||||
| Pan i magnitude | |||||||
| Pan z magnitude | |||||||
| Pan y magnitude | |||||||
| E(B-V) | 0.025 | ||||||
* 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.