All names: Gaia DR3 703311855476624000, SDSS J084827.12+271542.4, WD 0845+274, SDSS J084827.13+271542.4, TIC 117379651, Gaia EDR3 703311855476624000, 2MASS J08482713+2715417, GALEX J084827.1+271541, Gaia DR2 703311855476624000, LAMOST J084827.12+271542.4, WIRED J084827.12+271542.4, SDSS J084827.12+271542.5
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Guo et al. 2015 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 48 27.12 (0.5) | 08 48 27.13 | 08 48 27.12 (0.7) | 08 48 27.12 | 08 48 27.14 (0.5) | 08 48 26.54 | 08 48 27.13 | ||||
| Declination | 27 15 42.38 (0.3) | 27 15 42.42 | 27 15 42.38 (0.4) | 27 15 42.41 | 27 15 42.46 (0.3) | 27 15 41.04 | 27 15 42.44 | ||||
| Spectral type | DA+M | DA+M? | DA+dMe | DA dM | DA+M | ||||||
| Effective temperature | [K] | 38739.0 (2089) | 6300.0 (3) | ||||||||
| log(g) | [cgs] | 7.77 (0.3) | 10.00 (0.003) | ||||||||
| Mass | [M☉] | 0.56 (0.1) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 1.88 (0.6) | 1.42 (0.7) | 1.88 (0.6) | |||||||
| Distance | [pc] | 531.59 (166) | 702.17 (364) | 365.00 (29) | 531.60 (166) | ||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -9.829810762 (0.7) | -5.322819203 (1) | -9.83 (0.7) | |||||||
| Proper motion (declination) | [mas/yr] | -5.432579319 (0.5) | -3.832401536 (0.9) | -5.433 (0.5) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | WDMS | |||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.52 (0.008) | ||||||||||
| H magnitude | 15.83 (0.1) | ||||||||||
| K magnitude | 15.93 (0.2) | ||||||||||
| u magnitude | 19.06 (0.02) | 19.09 | 19.06 (0.02) | 19.08 | 19.08 (0.03) | ||||||
| g magnitude | 19.06 (0.009) | 19.07 | 19.06 (0.009) | 19.06 | 19.07 (0.02) | ||||||
| r magnitude | 18.58 (0.009) | 18.58 | 18.58 (0.009) | 18.57 | 18.58 (0.01) | ||||||
| i magnitude | 18.06 (0.008) | 18.06 | 18.06 (0.008) | 18.05 | 18.06 (0.01) | ||||||
| z magnitude | 17.69 (0.02) | 17.72 | 17.69 (0.02) | 17.71 | 17.71 (0.02) | ||||||
| G magnitude | 18.53 (0.02) | 18.50 | 18.53 (0.006) | ||||||||
| BP magnitude | 18.91 (0.02) | 18.88 | |||||||||
| RP magnitude | 17.69 (0.009) | 17.71 | |||||||||
| Pan g magnitude | 19.03 (0.006) | ||||||||||
| Pan r magnitude | 18.58 (0.004) | ||||||||||
| Pan i magnitude | 18.07 (0.004) | ||||||||||
| Pan z magnitude | 17.79 (0.007) | ||||||||||
| Pan y magnitude | 17.63 (0.007) | ||||||||||
| 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.