All names: Gaia DR2 4615767547325349504, EC04467-8328, GALEX J044008.8-832257, 2MASS J04400880-8322568, EC 04467-8328, Gaia DR3 4615767547325349504, UCAC4 034-002129, TIC 269855226
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 40 09.05 | 04 40 08.91 (0.03) | ||
| Declination | -83 22 56.14 | -83 22 56.80 (0.04) | ||
| Spectral type | sdB | 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] | 0.48 (0.06) | 0.47 (0.04) | |
| Distance | [pc] | 2074.26 (265) | 2137.67 (168) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.645 (0.1) | 1.707 (0.04) | |
| Proper motion (declination) | [mas/yr] | 4.464 (0.1) | 4.559 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.27 (0.01) | |||
| V magnitude | 16.19 (0.01) | |||
| R magnitude | 16.27 (0.3) | |||
| I magnitude | ||||
| J magnitude | 16.50 (0.1) | 16.50 (0.1) | ||
| H magnitude | 15.85 | |||
| K magnitude | 17.07 | |||
| u magnitude | ||||
| g magnitude | 16.07 (0.05) | |||
| r magnitude | 16.33 (0.02) | |||
| i magnitude | 16.89 (0.01) | |||
| z magnitude | ||||
| G magnitude | 16.23 (0.002) | 16.20 (0.003) | ||
| BP magnitude | 16.09 (0.008) | |||
| RP magnitude | 16.34 (0.005) | |||
| Pan g magnitude | ||||
| Pan r magnitude | ||||
| Pan i magnitude | ||||
| Pan z magnitude | ||||
| Pan y magnitude | ||||
| E(B-V) | 0.076 | |||
* 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.