FoF 1809
(LP 1809)
0.42
UTI
0.74
CN
1.0
Cdens
0.38
CC3
0.0
Clit
1.0
Cdup
Stellar density (N50/rad)
7.3 [N/pc2]
- CN 0.74 Moderately populated
- Cdens 1.0 Very dense
- CC3 0.38 Low quality
- Clit 0.0 Rarely studied
- Cdup 1.0 Unique
đĨ Members
đ Colab
đŦ Bayestar19
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
MOCA
đ CDS
đ Simbad
đ CDS (Îą, δ)
đ Simbad (Îą, δ)
Overview
FoF 1809 is a moderately populated, very dense object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is rarely studied in the literature.
Note: This object shares a large percentage of members with 2 later reported entries. 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 | 99999â | 334.709 | 57.432 | 0.325 | -4.398 | -3.551 | -60.958 |
| Almeida et al. | 2025 | 334.707 | 57.426 | â | â | â | â |
| Almeida et al. | 2023 | 334.712 | 57.426 | â | â | â | â |
| Dias et al. | 2021 | 334.707 | 57.426 | 0.342 | -4.359 | -3.434 | -84.263 |
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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 2.71 | 2.73 | â | 441 | 0.038 | 686 | 0.67 | â |
| Almeida et al. | 2025 | 2.71 | 2.73 | â | 441 | â | 886 | â | â |
| Almeida et al. | 2023 | 2.60 | 2.86 | â | 218 | -0.016 | 487(1) | 0.67 | â |
| Dias et al. | 2021 | 2.71 | 2.73 | â | 441 | 0.092 | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Almeida et al. (2025)
Mass determination: good fit. Isochrone match: intermediate fit. Silver sample.