All names: TIC 177776507, SDSS J200854.19-115014.4, Gaia EDR3 6880802938390576256, Gaia DR3 6880802938390576256, 2MASS J20085418-1150144, Gaia DR2 6880802938390576256
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 20 08 54.19 (0.04) | 20 08 54.20 | 20 08 54.19 (0.04) | 20 08 54.19 | 20 08 54.19 (0.04) | |||
| Declination | -11 50 14.54 (0.02) | -11 50 14.45 | -11 50 14.54 (0.03) | -11 50 14.46 | -11 50 14.35 (0.02) | |||
| Spectral type | WD+M | M0V | ||||||
| Effective temperature | [K] | |||||||
| log(g) | [cgs] | |||||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 2.03 (0.04) | 2.09 (0.05) | 2.03 (0.04) | ||||
| Distance | [pc] | 491.51 (10) | 478.94 (11) | 491.50 (10) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | 1.234192846 (0.04) | 1.262479616 (0.09) | 1.234 (0.04) | ||||
| Proper motion (declination) | [mas/yr] | -11.96412347 (0.03) | -11.90097712 (0.05) | -11.964 (0.03) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | WDMS | |||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 13.75 (0.04) | |||||||
| H magnitude | 12.94 (0.03) | |||||||
| K magnitude | 12.78 (0.03) | |||||||
| u magnitude | 19.15 (0.03) | 19.10 | 19.12 (0.03) | |||||
| g magnitude | 16.99 (0.004) | 17.01 | 17.00 (0.004) | |||||
| r magnitude | 15.86 (0.004) | 15.84 | 15.85 (0.004) | |||||
| i magnitude | 15.23 (0.004) | 15.25 | 15.22 (0.004) | |||||
| z magnitude | 14.88 (0.005) | 14.86 | 14.86 (0.005) | |||||
| G magnitude | 15.73 (0.005) | 15.75 | 15.73 (0.003) | |||||
| BP magnitude | 16.53 (0.005) | 16.54 | ||||||
| RP magnitude | 14.85 (0.003) | 14.86 | ||||||
| Pan g magnitude | 16.80 (0.004) | |||||||
| Pan r magnitude | 15.82 (0.002) | |||||||
| Pan i magnitude | 15.26 (0.003) | |||||||
| Pan z magnitude | 14.96 (0.003) | |||||||
| Pan y magnitude | 14.82 (0.003) | |||||||
| E(B-V) | 0.137 | |||||||
* 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.