HSC 1240
0.09
UTI
0.0
CN
0.2
Cdens
0.25
CC3
0.0
Clit
1.0
Cdup
Stellar density (N50/rad)
1.0 [N/pc2]
- CN 0.0 Sparse
- Cdens 0.2 Very loose
- CC3 0.25 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
HSC 1240 is a sparse, very loose object of low C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a metal-poor, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It was recently reported 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.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 63.648 | 44.132 | 1.339 | 0.95 | -5.284 | -1.376 |
| Zhang et al. | 2024 | 63.812 | 44.312 | â | â | â | â |
| Cavallo et al. | 2024 | 62.872 | 44.236 | 1.34 | â | â | â |
| Hunt & Reffert | 2023 | 63.812 | 44.312 | 1.338 | 1.014 | -5.278 | -20.144 |
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 | 0.685 | 1.335 | 0.55 | 136 | -0.570 | â | â | â |
| Zhang et al. | 2024 | â | â | â | â | -0.329(1) | â | â | â |
| Cavallo et al. | 2024 | 0.66 | 1.55 | â | 178 | -0.810 | â | â | â |
| Hunt & Reffert | 2023 | 0.71 | 1.12 | 0.55 | 94 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Cavallo et al. (2024)
Gold sample.
Hunt & Reffert (2024)
Classified as a moving group.