All names: PG 1607+228, SDSS J160932.41+223749.8, HIDDEN NAME PG 1607+227, Gaia DR3 1206447693448896128, GALEX J160932.4+223749, LAMOST J160932.41+223749.8, UCAC4 564-054370, Gaia DR2 1206447693448896128, PG1607+227
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 16 09 32.42 | 16 09 32.41 (0.03) | ||
| Declination | 22 37 49.95 | 22 37 49.85 (0.04) | ||
| Spectral type | He-sdO | sdOB | ||
| Effective temperature | [K] | 45362.0 (2000) | ||
| log(g) | [cgs] | 5.86 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.28 (0.09) | 0.32 (0.06) | |
| Distance | [pc] | 3556.19 (1103) | 3104.63 (545) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -1.935 (0.1) | -2.065 (0.04) | |
| Proper motion (declination) | [mas/yr] | -4.241 (0.1) | -4.228 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 16.14 (0.05) | |||
| V magnitude | 16.28 (0.01) | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | ||||
| H magnitude | ||||
| K magnitude | ||||
| u magnitude | 15.79 (0.006) | 15.79 (0.006) | ||
| g magnitude | 16.11 (0.004) | 16.11 (0.004) | ||
| r magnitude | 16.54 (0.005) | 16.54 (0.005) | ||
| i magnitude | 16.84 (0.006) | 16.84 (0.006) | ||
| z magnitude | 17.15 (0.01) | 17.15 (0.01) | ||
| G magnitude | 16.34 (0.001) | 16.32 (0.003) | ||
| BP magnitude | 16.12 (0.009) | |||
| RP magnitude | 16.54 (0.004) | |||
| Pan g magnitude | 16.18 (0.002) | |||
| Pan r magnitude | 16.56 (0.004) | |||
| Pan i magnitude | 16.87 (0.003) | |||
| Pan z magnitude | 17.12 (0.006) | |||
| Pan y magnitude | 17.29 (0.007) | |||
| E(B-V) | 0.076 | |||
* 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.