All names: KPD 2048+3515, UCAC2 44209572, 2MASS J20500348+3527254, TIC 230816208, KPD2048+3515, Gaia DR3 1869910636212423296, UCAC4 628-105832, Gaia DR2 1869910636212423296
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 20 50 03.52 | 20 50 03.49 (0.02) | ||
| Declination | 35 27 26.07 | 35 27 25.58 (0.02) | ||
| Spectral type | sdO | sdO | ||
| 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] | 0.87 (0.04) | 0.94 (0.03) | |
| Distance | [pc] | 1145.74 (58) | 1067.35 (32) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -3.928 (0.07) | -3.845 (0.03) | |
| Proper motion (declination) | [mas/yr] | -3.185 (0.08) | -3.189 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.94 (0.07) | |||
| V magnitude | 14.04 (0.06) | |||
| R magnitude | 14.32 (0.06) | |||
| I magnitude | ||||
| J magnitude | 14.63 (0.04) | 14.63 (0.04) | ||
| H magnitude | 14.77 (0.06) | 14.77 (0.06) | ||
| K magnitude | 14.73 (0.1) | 14.73 (0.1) | ||
| u magnitude | ||||
| g magnitude | 13.88 (0.04) | |||
| r magnitude | 14.14 (0.05) | |||
| i magnitude | 14.32 (0.05) | |||
| z magnitude | ||||
| G magnitude | 14.07 (0.0006) | 14.05 (0.003) | ||
| BP magnitude | 13.87 (0.007) | |||
| RP magnitude | 14.29 (0.002) | |||
| Pan g magnitude | 13.93 (0.002) | |||
| Pan r magnitude | 14.31 (0.001) | |||
| Pan i magnitude | 14.64 (0.0009) | |||
| Pan z magnitude | 14.89 (0.004) | |||
| Pan y magnitude | 15.07 (0.003) | |||
| E(B-V) | 0.173 | |||
* 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.