All names: LAMOST J232812.94+295333.5, Gaia EDR3 2869716861641681664, Gaia DR2 2869717686274246400, Gaia DR3 2869717686274246400, LAMOSTJ232812.94+295333.6
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 23 28 18.31 (0.7) | 23 28 12.94 | 23 28 12.94 (0.04) | ||
| Declination | 29 52 01.37 (0.7) | 29 53 33.59 | 29 53 33.67 (0.04) | ||
| Spectral type | He-sdOB | sdOBHe | |||
| Effective temperature | [K] | 45030.0 (2480) | |||
| log(g) | [cgs] | 5.55 (0.5) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 2.94 (1) | 0.53 (0.09) | 0.23 (0.06) | |
| Distance | [pc] | 340.53 (121) | 1891.07 (328) | 4266.21 (1116) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 19.233 (1) | 0.842 (0.1) | 1.116 (0.05) | |
| Proper motion (declination) | [mas/yr] | -3.731 (1) | -6.501 (0.1) | -6.332 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | |||||
| H magnitude | |||||
| K magnitude | |||||
| u magnitude | 16.20 (0.006) | ||||
| g magnitude | 16.50 (0.004) | ||||
| r magnitude | 16.88 (0.005) | ||||
| i magnitude | 17.17 (0.006) | ||||
| z magnitude | 17.45 (0.01) | ||||
| G magnitude | 20.71 (0.009) | 16.71 (0.002) | 16.68 (0.003) | ||
| BP magnitude | 21.02 (0.2) | 16.53 (0.01) | |||
| RP magnitude | 19.69 (0.08) | 16.87 (0.005) | |||
| Pan g magnitude | 16.56 (0.006) | ||||
| Pan r magnitude | 16.89 (0.003) | ||||
| Pan i magnitude | 17.20 (0.004) | ||||
| Pan z magnitude | 17.45 (0.005) | ||||
| Pan y magnitude | 17.61 (0.007) | ||||
| E(B-V) | 0.059 | ||||
* 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.