All names: SDSS J232757.46+483755.2, SDSSJ232757.46+483755.2, Gaia DR3 1942107868212034304, Gaia DR2 1942107868212034304, 2MASS J23275746+4837551, TIC 25476142
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 23 27 57.46 | 23 27 57.47 (0.03) | ||
| Declination | 48 37 55.20 | 48 37 55.25 (0.03) | ||
| Spectral type | He-sdO | sdOHe | ||
| Effective temperature | [K] | 64700.0 (2000) | ||
| log(g) | [cgs] | 5.40 (0.08) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.19 (0.06) | 0.18 (0.04) | |
| Distance | [pc] | 5184.03 (1650) | 5627.46 (1311) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.106 (0.09) | -4.058 (0.03) | |
| Proper motion (declination) | [mas/yr] | -0.515 (0.09) | -0.521 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.25 (0.1) | 16.25 (0.1) | ||
| H magnitude | 17.66 | |||
| K magnitude | 17.20 | |||
| u magnitude | 15.24 (0.004) | 15.23 (0.004) | ||
| g magnitude | 15.58 (0.004) | 15.56 (0.004) | ||
| r magnitude | 15.99 (0.004) | 15.98 (0.004) | ||
| i magnitude | 16.27 (0.005) | 16.26 (0.004) | ||
| z magnitude | 16.54 (0.009) | 16.52 (0.008) | ||
| G magnitude | 15.80 (0.001) | 15.78 (0.003) | ||
| BP magnitude | 15.60 (0.007) | |||
| RP magnitude | 15.97 (0.004) | |||
| Pan g magnitude | 15.65 (0.004) | |||
| Pan r magnitude | 16.00 (0.002) | |||
| Pan i magnitude | 16.31 (0.002) | |||
| Pan z magnitude | 16.56 (0.003) | |||
| Pan y magnitude | 16.73 (0.009) | |||
| E(B-V) | 0.120 | |||
* 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.