All names: 2MASS J16232979+2445417, GALEX J162329.8+244540, Ton 257, FB 166, Gaia DR3 1302449042967968640, TIC 376722325, PG 1621+249, UBV M 43129, PG1621+249, CSI+24-16213, Gaia DR2 1302449042967968640, LAMOST J162329.86+244541.0, UBV 13899, GEN# +6.10070257
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 16 23 29.82 | 16 23 29.79 (0.02) | ||
| Declination | 24 45 41.88 | 24 45 41.28 (0.03) | ||
| Spectral type | He-sdO | sdBO | ||
| Effective temperature | [K] | 54710.0 (312) | ||
| log(g) | [cgs] | 5.91 (0.05) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.20 (0.06) | 0.30 (0.04) | |
| Distance | [pc] | 5112.47 (1474) | 3335.56 (467) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -11.24 (0.08) | -11.156 (0.03) | |
| Proper motion (declination) | [mas/yr] | -8.791 (0.09) | -8.696 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.46 | |||
| V magnitude | 15.94 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.25 (0.08) | 16.25 (0.08) | ||
| H magnitude | 16.49 (0.2) | 16.49 (0.2) | ||
| K magnitude | 16.63 | |||
| u magnitude | 15.05 (0.004) | |||
| g magnitude | 15.44 (0.003) | |||
| r magnitude | 15.94 (0.004) | |||
| i magnitude | 16.26 (0.005) | |||
| z magnitude | 16.59 (0.008) | |||
| G magnitude | 15.70 (0.0008) | 15.68 (0.003) | ||
| BP magnitude | 15.46 (0.007) | |||
| RP magnitude | 15.96 (0.002) | |||
| Pan g magnitude | 15.53 (0.004) | |||
| Pan r magnitude | 15.94 (0.001) | |||
| Pan i magnitude | 16.30 (0.003) | |||
| Pan z magnitude | 16.56 (0.005) | |||
| Pan y magnitude | 16.76 (0.007) | |||
| E(B-V) | 0.044 | |||
* 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.