FSR 1666
0.39
UTI
0.54
CN
0.21
Cdens
1.0
CC3
0.1
Clit
1.0
Cdup
Nm (P>50%)
58
Core radius and density
2.0 [pc], 1.1 [pc-2]
- CN 0.54 Moderately populated
- Cdens 0.21 Very loose
- CC3 1.0 Very high quality
- Clit 0.1 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
FSR 1666 is a moderately populated, very loose object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, young cluster (see Parameters). It is rarely studied in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 207.167 | -61.439 | 0.281 | -6.065 | -1.687 | 114.488 |
| Hunt & Reffert | 2024 | 207.196 | -61.434 | 0.275 | -6.062 | -1.691 | 81.052 |
| Cavallo et al. | 2024 | 207.041 | -61.446 | 0.275 | â | â | â |
| Hunt & Reffert | 2023 | 207.196 | -61.434 | 0.275 | -6.062 | -1.691 | 81.052 |
| Morales et al. | 2013 | 207.146 | -61.433 | â | â | â | â |
| Froebrich et al. | 2007 | 207.146 | -61.433 | â | â | â | 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] | Bfrac | BSS |
|---|---|---|---|---|---|---|---|---|---|
| UCC | 99999â | 3.43 | 4.48 | 3.11 | 61 | -0.310 | 1046 | â | â |
| Hunt & Reffert | 2024 | 3.43 | 4.48 | 3.11 | 61 | â | 1046(1) | â | â |
| Cavallo et al. | 2024 | 3.18 | 4.57 | â | 17 | -0.310 | â | â | â |
| Hunt & Reffert | 2023 | 3.43 | 4.48 | 3.11 | 61 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Wood sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.03 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.03 (50th percentile).
Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, without submm emission.