All names: UCAC4 504-143995, PG 2240+105, Gaia DR2 2717582699040219392, HS 2240+1031, UCAC2 35679496, 2MASS J22432923+1046535, TIC 336624607, Gaia EDR3 2717582699040219392, SDSS J224329.24+104653.6, Gaia DR3 2717582699040219392, PG2240+105, LAMOST J224329.24+104653.6
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 22 43 29.25 (0.04) | 22 43 29.23 | 22 43 29.24 (0.04) | ||
| Declination | 10 46 53.59 (0.04) | 10 46 53.91 | 10 46 53.62 (0.04) | ||
| Spectral type | sdOB | sdB | |||
| Effective temperature | [K] | 34400.0 (800) | |||
| log(g) | [cgs] | 5.70 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.81 (0.04) | 0.80 (0.07) | 0.81 (0.04) | |
| Distance | [pc] | 1233.35 (67) | 1252.66 (103) | 1233.35 (67) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 11.462 (0.05) | 11.389 (0.1) | 11.462 (0.05) | |
| Proper motion (declination) | [mas/yr] | -1.772 (0.04) | -1.762 (0.09) | -1.772 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 14.91 (0.02) | ||||
| V magnitude | 15.12 (0.01) | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.73 (0.07) | 15.73 (0.07) | |||
| H magnitude | 15.87 (0.2) | 15.87 (0.2) | |||
| K magnitude | 15.48 (0.2) | 15.48 (0.2) | |||
| u magnitude | 14.55 (0.003) | 14.55 (0.003) | |||
| g magnitude | 14.76 (0.003) | 14.76 (0.003) | |||
| r magnitude | 15.25 (0.003) | 15.25 (0.003) | |||
| i magnitude | 15.58 (0.004) | 15.58 (0.004) | |||
| z magnitude | 15.86 (0.007) | 15.86 (0.007) | |||
| G magnitude | 15.02 (0.003) | 15.04 (0.001) | 15.02 (0.003) | ||
| BP magnitude | 14.90 (0.003) | 14.85 (0.01) | |||
| RP magnitude | 15.27 (0.005) | 15.27 (0.002) | |||
| Pan g magnitude | 14.87 (0.006) | ||||
| Pan r magnitude | 15.27 (0.004) | ||||
| Pan i magnitude | 15.61 (0.002) | ||||
| Pan z magnitude | 15.87 (0.003) | ||||
| Pan y magnitude | 16.05 (0.005) | ||||
| E(B-V) | 0.065 | ||||
* 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.