All names: 2MASS J16180646+2141253, SDSSJ161806.46+214125.3, UCAC4 559-056818, Gaia DR3 1202447086032118784, GALEX J161806.4+214125, TIC 359261257, LAMOST J161806.43+214125.3, SDSS J161806.46+214125.3, Gaia DR2 1202447086032118784
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 16 18 06.46 | 16 18 06.46 (0.01) | ||
| Declination | 21 41 25.30 | 21 41 25.40 (0.02) | ||
| Spectral type | sd | sdOB+F8V | ||
| Effective temperature | [K] | |||
| log(g) | [cgs] | |||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.58 (0.04) | 0.61 (0.02) | |
| Distance | [pc] | 1718.21 (104) | 1651.53 (65) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.93 (0.05) | -1.038 (0.02) | |
| Proper motion (declination) | [mas/yr] | -1.027 (0.05) | -1.009 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.05 (0.02) | |||
| V magnitude | 14.92 (0.01) | |||
| R magnitude | 15.02 (0.1) | |||
| I magnitude | ||||
| J magnitude | 14.20 (0.03) | 14.20 (0.03) | ||
| H magnitude | 13.96 (0.04) | 13.96 (0.04) | ||
| K magnitude | 13.99 (0.05) | 13.99 (0.05) | ||
| u magnitude | 15.09 (0.004) | 15.10 (0.004) | ||
| g magnitude | 14.88 (0.004) | 14.93 (0.01) | ||
| r magnitude | 14.90 (0.005) | 14.89 (0.01) | ||
| i magnitude | 14.90 (0.005) | 14.93 (0.01) | ||
| z magnitude | 14.95 (0.005) | 14.95 (0.005) | ||
| G magnitude | 14.82 (0.0004) | 14.80 (0.003) | ||
| BP magnitude | 14.89 (0.004) | |||
| RP magnitude | 14.57 (0.001) | |||
| Pan g magnitude | 14.91 (0.001) | |||
| Pan r magnitude | 14.89 (0.003) | |||
| Pan i magnitude | 14.91 (0.003) | |||
| Pan z magnitude | 14.96 (0.002) | |||
| Pan y magnitude | 14.98 (0.004) | |||
| E(B-V) | 0.067 | |||
* 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.