All names: Gaia DR3 873233784048233344, Gaia DR2 873233784048233344, LAMOST J072835.11+280239.1, TIC 26831268, SDSSJ072835.10+280239.2, SDSS J072835.10+280239.2, 2MASS J07283509+2802388, SDSS J072835.11+280239.2
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 07 28 35.11 | 07 28 35.11 (0.05) | ||
| Declination | 28 02 39.12 | 28 02 39.20 (0.04) | ||
| Spectral type | He-sdO | sdOHe40 | ||
| Effective temperature | [K] | 54109.0 (967) | ||
| log(g) | [cgs] | 6.39 (0.08) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.46 (0.07) | 0.30 (0.05) | |
| Distance | [pc] | 2193.94 (324) | 3290.56 (562) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.086 (0.1) | 0.261 (0.06) | |
| Proper motion (declination) | [mas/yr] | -0.683 (0.1) | -0.751 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.38 (0.1) | 16.38 (0.1) | ||
| H magnitude | 16.23 | |||
| K magnitude | 16.39 | |||
| u magnitude | 15.08 (0.004) | 15.08 (0.004) | ||
| g magnitude | 15.49 (0.003) | 15.49 (0.003) | ||
| r magnitude | 16.01 (0.004) | 16.01 (0.004) | ||
| i magnitude | 16.35 (0.004) | 16.35 (0.004) | ||
| z magnitude | 16.68 (0.009) | 16.68 (0.009) | ||
| G magnitude | 15.78 (0.001) | 15.75 (0.003) | ||
| BP magnitude | 15.51 (0.02) | |||
| RP magnitude | 16.05 (0.006) | |||
| Pan g magnitude | 15.59 (0.004) | |||
| Pan r magnitude | 16.02 (0.002) | |||
| Pan i magnitude | 16.39 (0.003) | |||
| Pan z magnitude | 16.67 (0.004) | |||
| Pan y magnitude | 16.86 (0.006) | |||
| E(B-V) | 0.041 | |||
* 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.