All names: UCAC4 220-004822, EC 04369-4616, 2MASS J04382730-4610527, Gaia DR2 4790020933234390016, Gaia DR3 4790020933234390016, GALEX J043827.1-461053, GALEXJ04384-4610, TIC 200394475
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 38 27.12 | 04 38 27.32 (0.04) | ||
| Declination | -46 10 53.32 | -46 10 52.68 (0.04) | ||
| Spectral type | sdO | sdB | ||
| 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] | 1.02 (0.04) | 0.90 (0.04) | |
| Distance | [pc] | 982.99 (39) | 1112.72 (55) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 9.69 (0.08) | 9.049 (0.05) | |
| Proper motion (declination) | [mas/yr] | 0.581 (0.1) | 2.063 (0.06) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.66 (0.08) | |||
| V magnitude | 13.82 (0.03) | |||
| R magnitude | 14.24 (0.1) | |||
| I magnitude | ||||
| J magnitude | 13.78 (0.03) | 13.78 (0.03) | ||
| H magnitude | 13.56 (0.03) | 13.56 (0.03) | ||
| K magnitude | 13.55 (0.04) | 13.55 (0.04) | ||
| u magnitude | ||||
| g magnitude | 13.66 (0.07) | |||
| r magnitude | 14.00 (0.01) | |||
| i magnitude | 14.22 (0.06) | |||
| z magnitude | ||||
| G magnitude | 13.76 (0.0009) | 13.74 (0.003) | ||
| BP magnitude | 13.59 (0.008) | |||
| RP magnitude | 13.88 (0.003) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.011 | |||
* 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.