FoF 1620
(LP 1620)
0.56
UTI
0.78
CN
1.0
Cdens
1.0
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
3.0 [arcmin]
- CN 0.78 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
FoF 1620 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a very massive, near-solar metallicity, old cluster (see Parameters). It is rarely studied in the literature.
Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.
Distant
High extinction
Very massive
Near-solar metallicity
Old
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 252.993 | -44.229 | 0.342 | -1.318 | -1.169 | -64.5 |
| Almeida et al. | 2025 | 252.986 | -44.233 | â | â | â | â |
| He et al. | 2023 | 252.99 | -44.233 | 0.345 | -1.321 | -1.172 | -64.5 |
| Dias et al. | 2021 | 252.986 | -44.233 | 0.328 | -1.342 | -1.113 | â |
đĄ 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 |
|---|---|---|---|---|---|---|---|---|---|
| Almeida et al. | 2025 | 3.82 | 3.18 | â | 2460 | â | 5717 | â | â |
| He et al. | 2023 | 2.29 | 4.90 | â | 794 | â | â | â | â |
| Dias et al. | 2021 | 3.82 | 3.18 | â | 2460 | 0.234 | â | â | â |
Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.