All names: UCAC4 465-030432, Gaia DR2 3139042514040855296, UCAC2 32682739, 2MASS J07185783+0253147, Gaia DR3 3139042514040855296, LAMOST J071857.83+025314.8, KPD0716+0258, KPD 0716+0258, TIC 317439554
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 07 18 57.85 | 07 18 57.84 (0.03) | ||
| Declination | 02 53 14.66 | 02 53 14.77 (0.03) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 26300.0 (160) | ||
| log(g) | [cgs] | 5.23 (0.02) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.73 (0.06) | 0.66 (0.03) | |
| Distance | [pc] | 1363.88 (108) | 1508.30 (72) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -5.268 (0.1) | -5.345 (0.04) | |
| Proper motion (declination) | [mas/yr] | 0.7 (0.1) | 0.749 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.82 (0.01) | |||
| V magnitude | 14.89 (0.03) | |||
| R magnitude | 15.04 (0.09) | |||
| I magnitude | ||||
| J magnitude | 15.28 (0.05) | 15.28 (0.05) | ||
| H magnitude | 15.23 (0.09) | 15.23 (0.09) | ||
| K magnitude | 15.44 (0.2) | 15.44 (0.2) | ||
| u magnitude | ||||
| g magnitude | 14.78 (0.02) | |||
| r magnitude | 15.06 (0.08) | |||
| i magnitude | 15.35 (0.2) | |||
| z magnitude | ||||
| G magnitude | 14.89 (0.001) | 14.87 (0.003) | ||
| BP magnitude | 14.72 (0.009) | |||
| RP magnitude | 15.04 (0.004) | |||
| Pan g magnitude | 14.74 (0.001) | |||
| Pan r magnitude | 15.09 (0.002) | |||
| Pan i magnitude | 15.39 (0.001) | |||
| Pan z magnitude | 15.63 (0.003) | |||
| Pan y magnitude | 15.78 (0.004) | |||
| E(B-V) | 0.090 | |||
* 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.