All names: LAMOST J045044.80-031518.9, WISE J045044.79-031518.8, UCAC4 434-007650, LAMOSTJ045044.80-031518.9, 2MASS J04504480-0315189, Gaia DR2 3224977113050048896, Gaia DR3 3224977113050048896
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 50 44.80 | 04 50 44.80 (0.03) | ||
| Declination | -03 15 19.00 | -03 15 18.99 (0.02) | ||
| Spectral type | He-sdO | sdB/sdO | ||
| Effective temperature | [K] | 64175.0 (936) | ||
| log(g) | [cgs] | 5.37 (0.06) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.50 (0.07) | 0.59 (0.05) | |
| Distance | [pc] | 2003.61 (276) | 1687.76 (130) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.583 (0.1) | 0.643 (0.05) | |
| Proper motion (declination) | [mas/yr] | 3.186 (0.09) | 2.793 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 12.96 (0.04) | |||
| V magnitude | 13.22 (0.02) | |||
| R magnitude | 13.53 (0.07) | |||
| I magnitude | ||||
| J magnitude | 13.90 (0.03) | 13.90 (0.03) | ||
| H magnitude | 14.04 (0.03) | 14.04 (0.03) | ||
| K magnitude | 14.12 (0.06) | 14.12 (0.06) | ||
| u magnitude | ||||
| g magnitude | 13.00 (0.05) | |||
| r magnitude | 13.47 (0.04) | |||
| i magnitude | 13.79 (0.2) | |||
| z magnitude | ||||
| G magnitude | 13.19 (0.0005) | 13.17 (0.003) | ||
| BP magnitude | 12.92 (0.009) | |||
| RP magnitude | 13.48 (0.002) | |||
| Pan g magnitude | 12.94 | |||
| Pan r magnitude | 13.45 | |||
| Pan i magnitude | 13.85 (0.005) | |||
| Pan z magnitude | 14.13 (0.002) | |||
| Pan y magnitude | 14.30 (0.002) | |||
| E(B-V) | 0.033 | |||
* 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.