All names: Gaia DR3 660405475786928640, SDSS J085555.68+190004.7, SDSS J085555.57+190004.5, 2MASS J08555559+1900046, SDSS J085555.58+190004.6, Gaia DR2 660405475786928640, WD 0853+191, SDSS J085555.57+190004.6, [HHD2009] SDSS J0855+1900, TIC 197244707, Gaia EDR3 660405475786928640
| 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 55 55.58 (0.5) | 08 55 55.58 | 08 55 55.58 (0.7) | 08 55 55.57 | 08 55 55.59 (0.5) | 08 55 55.49 | 08 55 55.58 | |||
| Declination | 19 00 04.68 (0.3) | 19 00 04.59 | 19 00 04.68 (0.4) | 19 00 04.61 | 19 00 04.58 (0.3) | 18 59 58.56 | 19 00 04.63 | |||
| Spectral type | DA+M | DA+M | DA dM | DA+M | ||||||
| Effective temperature | [K] | 19193.0 (1039) | 7358.0 (119) | |||||||
| log(g) | [cgs] | 7.64 (0.2) | 7.67 (0.2) | |||||||
| Mass | [M☉] | 0.44 (0.09) | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 1.01 (0.8) | 1.70 (1) | 1.01 (0.8) | ||||||
| Distance | [pc] | 993.41 (791) | 587.16 (355) | 243.00 (60) | 993.44 (791) | |||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -7.556834489 (0.8) | -6.741078313 (1) | -7.557 (0.8) | ||||||
| Proper motion (declination) | [mas/yr] | 6.488248286 (0.5) | 2.875577965 (0.8) | 6.488 (0.5) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | 17.14 (0.2) | |||||||||
| H magnitude | 16.45 (0.2) | |||||||||
| K magnitude | 15.85 (0.2) | |||||||||
| u magnitude | 19.99 (0.04) | 20.03 | 19.99 (0.04) | 20.03 | 20.00 (0.04) | |||||
| g magnitude | 19.79 (0.01) | 19.75 | 19.72 (0.01) | 19.75 | 19.75 (0.02) | |||||
| r magnitude | 19.90 (0.02) | 19.86 | 19.83 (0.02) | 19.86 | 19.85 (0.02) | |||||
| i magnitude | 19.30 (0.02) | 19.19 | 19.30 (0.02) | 19.19 | 19.18 (0.02) | |||||
| z magnitude | 18.58 (0.03) | 18.57 | 18.58 (0.03) | 18.57 | 18.55 (0.03) | |||||
| G magnitude | 19.54 (0.04) | 19.54 | 19.54 (0.005) | |||||||
| BP magnitude | 19.98 (0.04) | 19.80 | ||||||||
| RP magnitude | 18.77 (0.05) | 18.62 | ||||||||
| Pan g magnitude | 19.77 (0.01) | |||||||||
| Pan r magnitude | 19.84 (0.01) | |||||||||
| Pan i magnitude | 19.27 (0.009) | |||||||||
| Pan z magnitude | 18.73 (0.01) | |||||||||
| Pan y magnitude | 18.41 (0.04) | |||||||||
| E(B-V) | 0.027 | |||||||||
* 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.