Haffner 18
- CN 0.76 Rich
- Cdens 0.77 Dense
- CC3 1.0 Very high quality
- Clit 0.69 Moderately studied
- Cdup 1.0 Unique
Overview
Haffner 18 is a rich, dense object of very high C3 quality. Its parallax locates it at a large distance, above the mid-plane. It is catalogued as a very young cluster (see Parameters). It is moderately studied in the literature. Note: This object shares a moderate percentage of members with at least one entry reported in the same catalogue. See table with shared members information.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | – | 118.179 | -26.379 | 0.2 | -2.533 | 2.625 | 103.523 |
| Hunt & Reffert | 2024 | 118.165 | -26.383 | 0.191 | -2.52 | 2.707 | – |
| Celli et al. | 2024 | 118.168 | -26.387 | – | – | – | – |
| Hunt & Reffert | 2023 | 118.165 | -26.383 | 0.191 | -2.52 | 2.707 | – |
| Jaehnig et al. | 2021 | 118.183 | -26.377 | 0.192 | -2.552 | 2.586 | – |
| Rain et al. | 2021 | 118.168 | -26.387 | 0.185 | -2.548 | 2.67 | – |
| Cantat-Gaudin et al. | 2020 | 118.168 | -26.387 | 0.185 | -2.548 | 2.67 | – |
| Soubiran et al. | 2018 | 118.168 | -26.387 | – | – | – | 92.28 |
| Cantat-Gaudin et al. | 2018 | 118.168 | -26.387 | 0.185 | -2.548 | 2.67 | – |
| Loktin & Popova | 2017 | 118.17 | -26.382 | – | -3.472 | 0.961 | 60.0 |
| Dias et al. | 2002 | 118.162 | -26.383 | – | -3.98 | 2.73 | – |
| Dambis | 1999 | 118.125 | -26.367 | – | – | – | – |
💡 Note: The UCC values are estimated from its identified members.
| Reference | Year | Dist [kpc] | Av [mag] | DAv [mag] | Age [Myr] | [Fe/H] [dex] | Mass [Msun] | Bfr | BSS |
|---|---|---|---|---|---|---|---|---|---|
| Hunt & Reffert | 2024 | – | – | – | – | – | 298* | – | – |
| Celli et al. | 2024 | – | – | – | 14 | – | 702 | – | – |
| Hunt & Reffert | 2023 | 6.82 | 2.42 | 1.62 | 4 | – | – | – | – |
| Jaehnig et al. | 2021 | 5.08* | – | – | – | – | – | – | – |
| Rain et al. | 2021 | 4.67 | 1.89 | – | 8 | – | – | – | 0 |
| Cantat-Gaudin et al. | 2020 | 5.08 | 1.52 | – | 14 | – | – | – | – |
| Soubiran et al. | 2018 | 4.67 | – | – | – | – | – | – | – |
| Cantat-Gaudin et al. | 2018 | 4.67 | – | – | – | – | – | – | – |
| Loktin & Popova | 2017 | 5.51 | 1.79 | – | 11 | – | – | – | – |
| Dias et al. | 2002 | 6.03 | 1.89 | – | 8 | – | – | – | – |
| Dambis | 1999 | 4.57 | 1.28 | – | 16 | – | – | – | – |
💡 Note: The parameters are sometimes
transformed from their original values to match the format of the
columns shown here, see FAQ.
The columns DAv, Bfr, BSS correspond to differential
extinction, binary fraction, and blue stragglers, respectively.
BSS values can be listed as fractions or integers.
(*): indicates that this parameter is
assigned more than one value in the corresponding reference.
