All names: SDSS J205226.23-045745.3, SDSSJ205226.23-045745.3, Gaia EDR3 6913887071469512064, GALEX J205226.1-045746, Gaia DR2 6913910539170818816, Gaia DR3 6913910539170818816
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 20 52 23.88 (0.6) | 20 52 26.24 | 20 52 26.24 (0.02) | ||
| Declination | -04 57 52.48 (0.3) | -04 57 45.33 | -04 57 45.31 (0.01) | ||
| Spectral type | sd | sd+F/K | |||
| 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] | 1.51 (0.8) | 0.61 (0.04) | 0.68 (0.03) | |
| Distance | [pc] | 660.98 (361) | 1630.52 (102) | 1463.91 (57) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -2.233 (0.8) | -1.842 (0.07) | -2.306 (0.03) | |
| Proper motion (declination) | [mas/yr] | -14.786 (0.6) | -6.28 (0.04) | -6.579 (0.02) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 13.73 (0.03) | ||||
| H magnitude | 13.53 (0.04) | ||||
| K magnitude | 13.49 (0.04) | ||||
| u magnitude | 14.77 (0.004) | 14.77 (0.004) | |||
| g magnitude | 14.59 (0.004) | 14.59 (0.004) | |||
| r magnitude | 14.49 (0.003) | 14.49 (0.003) | |||
| i magnitude | 14.47 (0.003) | 14.47 (0.003) | |||
| z magnitude | 14.48 (0.004) | 14.48 (0.004) | |||
| G magnitude | 20.35 (0.006) | 14.43 (0.0004) | 14.42 (0.003) | ||
| BP magnitude | 20.65 (0.1) | 14.54 (0.002) | |||
| RP magnitude | 19.63 (0.06) | 14.15 (0.002) | |||
| Pan g magnitude | 14.58 (0.005) | ||||
| Pan r magnitude | 14.49 (0.0009) | ||||
| Pan i magnitude | 14.50 (0.002) | ||||
| Pan z magnitude | 14.53 (0.002) | ||||
| Pan y magnitude | 14.52 (0.003) | ||||
| E(B-V) | 0.040 | ||||
* 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.