All names: UCAC4 546-021135, UCAC2 38577988, KPD 0552+1903, TIC 118967518, Gaia DR2 3398598348493762944, KPD0552+1903, 2MASS J05554040+1904258, WISE J055540.38+190425.8, LAMOST J055540.39+190425.7, WISEA J055540.38+190425.8, Gaia DR3 3398598348493762944
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 05 55 40.39 | 05 55 40.40 (0.02) | ||
| Declination | 19 04 26.24 | 19 04 25.79 (0.02) | ||
| Spectral type | He-sdO | sdO | ||
| Effective temperature | [K] | 63830.0 (920) | ||
| log(g) | [cgs] | 5.67 (0.4) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.46 (0.04) | 0.51 (0.03) | |
| Distance | [pc] | 2183.88 (196) | 1949.70 (101) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.469 (0.06) | 1.593 (0.03) | |
| Proper motion (declination) | [mas/yr] | -7.468 (0.05) | -7.492 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.79 | |||
| V magnitude | 14.68 | |||
| R magnitude | 14.75 (0.08) | |||
| I magnitude | ||||
| J magnitude | 14.45 (0.03) | 14.45 (0.03) | ||
| H magnitude | 14.44 (0.05) | 14.44 (0.05) | ||
| K magnitude | 14.63 (0.08) | 14.63 (0.08) | ||
| u magnitude | ||||
| g magnitude | ||||
| r magnitude | 14.61 (0.002) | |||
| i magnitude | 14.42 (0.004) | |||
| z magnitude | ||||
| G magnitude | 14.63 (0.0006) | 14.63 (0.0006) | ||
| BP magnitude | 14.61 (0.008) | |||
| RP magnitude | 14.50 (0.002) | |||
| Pan g magnitude | 14.65 (0.003) | |||
| Pan r magnitude | 14.72 (0.003) | |||
| Pan i magnitude | 14.85 (0.002) | |||
| Pan z magnitude | 14.96 (0.004) | |||
| Pan y magnitude | 15.06 (0.003) | |||
| E(B-V) | 0.473 | |||
* 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.