All names: GALEX J085844.0+195152, SDSS J085843.99+195152.0, Gaia DR3 684618375394433280, SDSS J085844.00+195152.1, Gaia DR2 684618375394433280, TIC 203214454, WD 0855+200, 2MASS J08584400+1951521, Gaia EDR3 684618375394433280
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 58 43.98 (0.3) | 08 58 44.00 | 08 58 43.98 (0.6) | 08 58 43.99 | 08 58 44.01 (0.3) | 08 58 44.11 | 08 58 44.00 | |||
| Declination | 19 51 52.01 (0.2) | 19 51 52.06 | 19 51 52.01 (0.5) | 19 51 51.98 | 19 51 52.05 (0.2) | 19 51 49.68 | 19 51 52.07 | |||
| Spectral type | DA+M | DA+M | DA2.8 M | DA+M | ||||||
| Effective temperature | [K] | 17505.0 (1170) | 6300.0 (3) | |||||||
| log(g) | [cgs] | 7.75 (0.3) | 10.00 (0.003) | |||||||
| Mass | [M☉] | 0.49 (0.1) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 0.70 (0.3) | 0.70 (0.3) | |||||||
| Distance | [pc] | 1434.44 (594) | 1434.51 (594) | |||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -31.63233587 (0.3) | -31.632 (0.3) | |||||||
| Proper motion (declination) | [mas/yr] | -2.708423566 (0.3) | -2.708 (0.3) | |||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 15.33 (0.05) | |||||||||
| H magnitude | 14.76 (0.04) | |||||||||
| K magnitude | 14.50 (0.06) | |||||||||
| u magnitude | 20.15 (0.04) | 20.21 | 20.16 (0.04) | 20.20 | 20.21 (0.04) | |||||
| g magnitude | 19.12 (0.01) | 19.17 | 19.12 (0.01) | 19.16 | 19.18 (0.02) | |||||
| r magnitude | 18.22 (0.007) | 18.28 | 18.22 (0.008) | 18.27 | 18.29 (0.01) | |||||
| i magnitude | 17.23 (0.006) | 17.26 | 17.24 (0.006) | 17.25 | 17.27 (0.02) | |||||
| z magnitude | 16.64 (0.01) | 16.68 | 16.64 (0.01) | 16.67 | 16.68 (0.02) | |||||
| G magnitude | 18.03 (0.03) | 17.97 | 18.03 (0.004) | |||||||
| BP magnitude | 18.87 (0.03) | 18.86 | ||||||||
| RP magnitude | 16.83 (0.007) | 16.83 | ||||||||
| Pan g magnitude | 19.05 (0.01) | |||||||||
| Pan r magnitude | 18.25 (0.006) | |||||||||
| Pan i magnitude | 17.26 (0.004) | |||||||||
| Pan z magnitude | 16.79 (0.003) | |||||||||
| Pan y magnitude | 16.52 (0.02) | |||||||||
| E(B-V) | 0.028 | |||||||||
* 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.