HSC 2630
0.41
UTI
0.26
CN
0.92
Cdens
0.75
CC3
0.06
Clit
1.0
Cdup
Nm (P>50%)
26
Core radius and density
0.7 [pc], 4.6 [pc-2]
- CN 0.26 Poorly populated
- Cdens 0.92 Very dense
- CC3 0.75 High 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 2630 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a low-mass, metal-poor, very young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It was recently reported in the literature.
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | 99999â | 210.591 | -61.809 | 5.469 | -19.707 | -14.274 | 9.599 |
| Liu et al. | 2025 | 210.59 | -61.77 | 5.53 | -20.27 | -13.9 | 9.49 |
| Swiggum et al. | 2024 | 210.587 | -61.768 | 5.528 | -20.273 | -13.899 | 9.599 |
| Cavallo et al. | 2024 | 208.202 | -62.202 | 5.534 | â | â | â |
| Hunt & Reffert | 2023 | 210.587 | -61.768 | 5.528 | -20.273 | -13.899 | 9.494 |
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 | 0.18 | 0.71 | 1.28 | 10 | -0.520 | 33 | â | â |
| Liu et al. | 2025 | 0.19 | 0.27 | â | 27 | â | â | â | â |
| Swiggum et al. | 2024 | 0.18 | â | â | 8 | â | 33 | â | â |
| Cavallo et al. | 2024 | 0.18 | 1.31 | â | 12 | -0.520 | â | â | â |
| Hunt & Reffert | 2023 | 0.18 | 0.71 | 1.28 | 8 | â | â | â | â |
Liu et al. (2025)
Classified as primordial binary cluster 240 along with UPK_606, and of multiple system 70 along with HSC_2636, UPK_606, HSC_2816, HSC_2733, OCSN_92 and OCSN_91.
Palma et al. (2025)
Part of multiple system G162, along with HSC_2618 and HSC_2610.
Cavallo et al. (2024)
Silver sample.
Hunt & Reffert (2024)
Classified as moving group. CMD class: 0.98 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).