All names: GALEX J172959.9+073948, Gaia DR2 4487210100890860800, SDSS J172959.71+073948.3, SDSS J172959.71+073948.4, Gaia EDR3 4487209860373705088, Gaia DR3 4487210100890860800
| Parameter | Unit | Gaia EDR3 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 17 30 07.08 (0.5) | 17 29 59.71 (0.1) | ||
| Declination | 07 39 25.44 (0.4) | 07 39 48.44 (0.09) | ||
| Spectral type | DA | |||
| 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] | 1.00 (0.7) | 0.31 (0.1) | |
| Distance | [pc] | 1001.70 (732) | 3277.61 (1443) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.106 (0.8) | -1.665 (0.1) | |
| Proper motion (declination) | [mas/yr] | -8.352 (0.6) | -6.284 (0.1) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 18.47 (0.02) | |||
| g magnitude | 18.25 (0.007) | |||
| r magnitude | 18.22 (0.008) | |||
| i magnitude | 18.18 (0.009) | |||
| z magnitude | 18.22 (0.03) | |||
| G magnitude | 20.31 (0.007) | 18.18 (0.003) | ||
| BP magnitude | 20.17 (0.2) | |||
| RP magnitude | 19.74 (0.08) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.149 | |||
* 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.