HSC 2972
0.36
UTI
0.29
CN
1.0
Cdens
0.38
CC3
0.06
Clit
1.0
Cdup
Stellar density (N50/rad)
6.7 [N/pc2]
- CN 0.29 Poorly populated
- Cdens 1.0 Very dense
- CC3 0.38 Low quality
- Clit 0.06 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 2972 is a poorly populated, very dense object of low C3 quality. Its parallax locates it at a relatively close* distance, near the mid-plane, affected by high extinction. It is catalogued as a very metal-poor, young cluster, but with a large variance across recent sources for the distance and absorption parameters (see Parameters). It was recently reported in the literature.
(*): The parallax distance estimate (~1.28 kpc) differs significantly from the median photometric distance (~2.13 kpc).
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 265.773 | -31.041 | 0.782 | -0.28 | -3.17 | â |
| Hunt & Reffert | 2024 | 265.775 | -31.043 | 0.775 | -0.25 | -3.18 | â |
| Cavallo et al. | 2024 | 265.764 | -31.066 | 0.775 | â | â | â |
| Hunt & Reffert | 2023 | 265.775 | -31.043 | 0.775 | -0.25 | -3.18 | 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 | 2.13 | 4.07 | 2.51 | 34 | -1.460 | 300 | â | â |
| Liu et al. | 2025 | 4.76 | 1.30 | â | 34 | â | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 300(1) | â | â |
| Cavallo et al. | 2024 | 2.13 | 4.38 | â | 42 | -1.460 | â | â | â |
| Hunt & Reffert | 2023 | 1.20 | 4.07 | 2.51 | 30 | â | â | â | â |
(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.
Liu et al. (2025)
Classified as primordial binary cluster 256 along with PHOC_10.
Palma et al. (2025)
Classified as optical pair P497, along with PHOC_10.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.70 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.70 (50th percentile).