All names: Gaia DR2 3137359161740102656, 2MASS J07483822+0403002, UCAC4 471-035320, WISE J074838.23+040300.1, UCAC2 33210012, Gaia DR3 3137359161740102656, GALEX J074838.2+040301, TIC 271306044, WISEA J074838.22+040300.1, GALEXJ07486+0403
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 07 48 38.28 | 07 48 38.24 (0.03) | ||
| Declination | 04 03 01.12 | 04 03 00.19 (0.02) | ||
| 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] | 0.58 (0.05) | 0.69 (0.04) | |
| Distance | [pc] | 1714.09 (146) | 1456.45 (75) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -2.211 (0.09) | -2.272 (0.04) | |
| Proper motion (declination) | [mas/yr] | -7.653 (0.06) | -7.751 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.93 (0.05) | |||
| V magnitude | 14.11 (0.05) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.60 (0.04) | 14.60 (0.04) | ||
| H magnitude | 14.74 (0.05) | 14.74 (0.05) | ||
| K magnitude | 14.84 (0.1) | 14.84 (0.1) | ||
| u magnitude | ||||
| g magnitude | 13.93 (0.06) | |||
| r magnitude | 14.31 (0.05) | |||
| i magnitude | 14.71 (0.05) | |||
| z magnitude | ||||
| G magnitude | 14.08 (0.0004) | 14.06 (0.003) | ||
| BP magnitude | 13.88 (0.004) | |||
| RP magnitude | 14.29 (0.001) | |||
| Pan g magnitude | 13.92 (0.004) | |||
| Pan r magnitude | 14.30 (0.002) | |||
| Pan i magnitude | 14.62 (0.003) | |||
| Pan z magnitude | 14.89 (0.003) | |||
| Pan y magnitude | 15.04 (0.005) | |||
| E(B-V) | 0.038 | |||
* 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.