All names: SDSS J164538.64+153932.98, SDSS J164538.64+153933.0, Gaia DR2 4462687864858474112, Gaia EDR3 4462687864858474112, Gaia DR3 4462687864858474112, GALEX J164538.6+153933, SDSS J164538.64+153932.9
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 45 38.63 (0.8) | 16 45 38.64 | 16 45 38.63 (1) | 16 45 38.63 (0.8) | ||||
| Declination | 15 39 32.94 (0.8) | 15 39 32.95 | 15 39 32.94 (1) | 15 39 32.92 (0.8) | ||||
| Spectral type | DA | DA | ||||||
| Effective temperature | [K] | 9168.0 (134) | ||||||
| log(g) | [cgs] | 7.51 (0.2) | ||||||
| Mass | [M☉] | 0.387 (0.08) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.67 (1) | 0.22 (2) | 0.67 (1) | ||||
| Distance | [pc] | 1492.15 (3104) | 4548.64 (34331) | 1492.09 (3103) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -2.105188988 (0.8) | 0.266600817 (2) | -2.105 (0.8) | ||||
| Proper motion (declination) | [mas/yr] | 1.07461586 (0.9) | -0.157508399 (3) | 1.075 (0.9) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 21.52 (0.1) | 21.54 (0.1) | 21.54 (0.1) | |||||
| g magnitude | 20.87 (0.03) | 20.89 (0.06) | 20.89 (0.06) | |||||
| r magnitude | 20.84 (0.03) | 20.89 (0.1) | 20.89 (0.1) | |||||
| i magnitude | 20.90 (0.05) | 20.91 (0.2) | 20.91 (0.2) | |||||
| z magnitude | 20.86 (0.2) | 20.89 (0.2) | 20.89 (0.2) | |||||
| G magnitude | 20.81 (0.2) | 20.88 | 20.81 (0.01) | |||||
| BP magnitude | 21.07 (0.2) | 20.59 | ||||||
| RP magnitude | 20.48 (0.1) | 20.13 | ||||||
| Pan g magnitude | 20.81 (0.03) | |||||||
| Pan r magnitude | 20.84 (0.03) | |||||||
| Pan i magnitude | 20.91 (0.06) | |||||||
| Pan z magnitude | 21.08 (0.1) | |||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.070 | |||||||
* 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.