All names: UCAC4 520-009100, GALEX J044908.3+135000, TIC 436639479, 2MASS J04490832+1350009, Cl* Melotte 25 HZ 8, HS0446+1344, Gaia DR2 3308504159554650368, Gaia DR3 3308504159554650368, HS 0446+1344, HZ 8
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 49 08.20 | 04 49 08.33 (0.04) | ||
| Declination | 13 50 01.75 | 13 50 00.71 (0.02) | ||
| Spectral type | sdB+MS | B3 | ||
| 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] | 1.00 (0.05) | 0.72 (0.04) | |
| Distance | [pc] | 1003.71 (52) | 1394.70 (83) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 42.714 (0.09) | 43.162 (0.04) | |
| Proper motion (declination) | [mas/yr] | -21.774 (0.05) | -22.165 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.64 (0.03) | |||
| V magnitude | 14.54 (0.09) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 13.96 (0.03) | 13.96 (0.03) | ||
| H magnitude | 13.79 (0.03) | 13.79 (0.03) | ||
| K magnitude | 13.71 (0.05) | 13.71 (0.05) | ||
| u magnitude | ||||
| g magnitude | 14.51 (0.03) | |||
| r magnitude | 14.52 (0.01) | |||
| i magnitude | 14.66 (0.01) | |||
| z magnitude | ||||
| G magnitude | 14.41 (0.0005) | 14.39 (0.003) | ||
| BP magnitude | 14.41 (0.005) | |||
| RP magnitude | 14.23 (0.001) | |||
| Pan g magnitude | 14.47 (0.005) | |||
| Pan r magnitude | 14.51 (0.001) | |||
| Pan i magnitude | 14.57 (0.003) | |||
| Pan z magnitude | 14.64 (0.005) | |||
| Pan y magnitude | 14.69 (0.004) | |||
| E(B-V) | 0.260 | |||
* 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.