All names: GALEX J042910.8-290250, EC 04271-2909, Gaia EDR3 4891032821666195968, Gaia DR2 4891033684953481600, 2MASS J04291072-2902481, Gaia DR3 4891033684953481600, EC04271-2909, TIC 178873605, BPS CS 22182-0037
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 04 29 15.31 (0.3) | 04 29 10.69 | 04 29 10.73 (0.02) | ||
| Declination | -29 04 05.16 (0.4) | -29 02 48.01 | -29 02 48.06 (0.03) | ||
| Spectral type | He-sdO | sdO8.5VIHe39 | |||
| 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] | 4.40 (0.5) | 0.76 (0.04) | 0.77 (0.04) | |
| Distance | [pc] | 227.47 (26) | 1315.27 (66) | 1300.73 (59) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 9.013 (0.5) | 1.196 (0.07) | 1.244 (0.03) | |
| Proper motion (declination) | [mas/yr] | 23.836 (0.6) | 8.318 (0.07) | 8.416 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 13.79 | ||||
| V magnitude | 14.10 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 14.81 (0.03) | 14.81 (0.03) | |||
| H magnitude | 14.85 (0.07) | 14.85 (0.07) | |||
| K magnitude | 15.04 (0.2) | 15.04 (0.2) | |||
| u magnitude | |||||
| g magnitude | |||||
| r magnitude | |||||
| i magnitude | |||||
| z magnitude | |||||
| G magnitude | 20.27 (0.005) | 14.10 (0.0005) | 14.09 (0.003) | ||
| BP magnitude | 20.39 (0.07) | 13.85 (0.008) | |||
| RP magnitude | 20.01 (0.07) | 14.40 (0.002) | |||
| Pan g magnitude | 13.97 (0.009) | ||||
| Pan r magnitude | 14.36 (0.0006) | ||||
| Pan i magnitude | 14.73 (0.003) | ||||
| Pan z magnitude | 15.03 (0.004) | ||||
| Pan y magnitude | 15.19 (0.005) | ||||
| E(B-V) | 0.012 | ||||
* 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.