All names: GALEX J041700.7+350717, LAMOST J041700.68+350717.1, SDSS J041700.67+350717.2, Gaia DR3 176164272695455744, Gaia DR2 176164272695455744, SDSSJ041700.67+350717.2
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 04 17 00.68 | 04 17 00.68 (0.08) | ||
| Declination | 35 07 17.19 | 35 07 17.21 (0.05) | ||
| Spectral type | He-sdOB | sdB/sdO | ||
| Effective temperature | [K] | 43970.0 (272) | ||
| log(g) | [cgs] | 6.08 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.57 (0.1) | 0.58 (0.09) | |
| Distance | [pc] | 1764.91 (417) | 1729.51 (274) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.893 (0.3) | 2.083 (0.1) | |
| Proper motion (declination) | [mas/yr] | -0.572 (0.2) | -0.464 (0.08) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 16.98 (0.007) | 16.98 (0.007) | ||
| g magnitude | 17.06 (0.005) | 17.06 (0.005) | ||
| r magnitude | 17.24 (0.005) | 17.23 (0.005) | ||
| i magnitude | 17.44 (0.006) | 17.44 (0.006) | ||
| z magnitude | 17.54 (0.01) | 17.54 (0.01) | ||
| G magnitude | 17.15 (0.002) | 17.11 (0.003) | ||
| BP magnitude | 17.06 (0.01) | |||
| RP magnitude | 17.12 (0.01) | |||
| Pan g magnitude | 17.08 (0.008) | |||
| Pan r magnitude | 17.24 (0.004) | |||
| Pan i magnitude | 17.44 (0.003) | |||
| Pan z magnitude | 17.61 (0.003) | |||
| Pan y magnitude | 17.74 (0.02) | |||
| E(B-V) | 0.342 | |||
* 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.