FoF 1975
(LP 1975)
0.07
UTI
0.0
CN
0.11
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Radius (P>50% members)
5.4 [arcmin]
- CN 0.0 Sparse
- Cdens 0.11 Very loose
- CC3 0.25 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
Overview
FoF 1975 is a sparse, very loose object of low C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster (see Parameters). It is rarely studied in the literature.
â ī¸ Warning: the low UTI value and no obvious signs of duplication (Cdup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Distant
Moderate extinction
Massive
Near-solar metallicity
Intermediate age
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | â | 92.966 | 25.061 | 0.255 | 0.211 | -1.231 | 32.84 |
| Almeida et al. | 2025 | 92.953 | 25.018 | â | â | â | â |
| Dias et al. | 2021 | 92.953 | 25.018 | 0.251 | 0.175 | -1.25 | 45.132 |
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 | 3.60 | 1.72 | â | 946 | â | 2337 | â | â |
| Dias et al. | 2021 | 3.60 | 1.72 | â | 946 | -0.257 | â | â | â |
Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.