All names: 2MASS J08525461+3143367, UCAC4 609-043690, SDSS J085254.62+314336.6, CBS 1, TIC 285010437, uvby98 610070358, Ton 358, UCAC2 42924692, Gaia EDR3 706760168755893888, PG 0849+319, PG0849+319, WD 0849+319, GALEX J085254.6+314334, Gaia DR3 706760168755893888, WISE J085254.61+314336.6, Gaia DR2 706760168755893888, BPS BS 17139-0004, WISEA J085254.61+314336.6
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Geier 2020 | Gaia DR2 | Stilism | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 52 54.62 (0.04) | 08 52 54.67 | 08 52 54.62 (0.06) | 08 52 54.63 (0.04) | 08 52 54.14 | |||
| Declination | 31 43 36.55 (0.02) | 31 43 37.01 | 31 43 36.56 (0.04) | 31 43 36.65 (0.02) | 31 43 38.64 | |||
| Spectral type | sdB+WD | sdOA | sdB/WD | |||||
| Effective temperature | [K] | 28900.0 (1000) | ||||||
| log(g) | [cgs] | 5.37 (0.1) | ||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.87 (0.05) | 0.93 (0.08) | 0.93 (0.08) | 0.87 (0.05) | |||
| Distance | [pc] | 1153.83 (66) | 1073.08 (88) | 1073.08 (88) | 1153.80 (66) | |||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -9.686534245 (0.04) | -9.571 (0.1) | -9.571 (0.1) | -9.687 (0.04) | |||
| Proper motion (declination) | [mas/yr] | -5.876862982 (0.04) | -5.866 (0.07) | -5.866 (0.07) | -5.877 (0.04) | |||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | yes | |||||||
| B magnitude | 14.29 (0.05) | |||||||
| V magnitude | 14.59 (0.05) | |||||||
| R magnitude | 14.78 (0.06) | |||||||
| I magnitude | ||||||||
| J magnitude | 15.18 (0.04) | 15.18 (0.04) | ||||||
| H magnitude | 15.32 (0.1) | 15.32 (0.1) | ||||||
| K magnitude | 15.26 (0.1) | 15.26 (0.1) | ||||||
| u magnitude | 14.04 (0.003) | |||||||
| g magnitude | 14.25 (0.003) | |||||||
| r magnitude | 14.71 (0.003) | |||||||
| i magnitude | 15.07 (0.004) | |||||||
| z magnitude | 15.39 (0.005) | |||||||
| G magnitude | 14.49 (0.001) | 14.51 (0.0005) | 14.51 | 14.49 (0.003) | ||||
| BP magnitude | 14.35 (0.001) | 14.29 (0.005) | 14.29 | |||||
| RP magnitude | 14.76 (0.001) | 14.76 (0.002) | 14.76 | |||||
| Pan g magnitude | 14.31 (0.005) | 14.31 (0.005) | ||||||
| Pan r magnitude | 14.74 (0.003) | 14.74 (0.003) | ||||||
| Pan i magnitude | 15.10 (0.002) | 15.10 (0.002) | ||||||
| Pan z magnitude | 15.37 (0.003) | 15.37 (0.003) | ||||||
| Pan y magnitude | 15.54 (0.005) | 15.54 (0.005) | ||||||
| E(B-V) | 0.023 | |||||||
* 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.