HSC 2907
0.49
UTI
0.85
CN
1.0
Cdens
1.0
CC3
0.25
Clit
0.73
Cdup
Stellar density (N50/rad)
34.5 [N/pc2]
- CN 0.85 Rich
- Cdens 1.0 Very dense
- CC3 1.0 Very high quality
- Clit 0.25 Poorly studied
- Cdup 0.73 Likely 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 2907 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It was recently reported in the literature.
Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry. 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 | 244.86 | -24.989 | 6.365 | -10.631 | -21.498 | -5.444 |
| Liu et al. | 2025 | 244.77 | -24.45 | 6.36 | -10.68 | -21.7 | -6.46 |
| Hunt & Reffert | 2024 | 244.773 | -24.45 | 6.361 | -10.679 | -21.702 | -6.463 |
| Cavallo et al. | 2024 | 244.859 | -25.146 | 6.365 | â | â | â |
| Hunt & Reffert | 2023 | 244.773 | -24.45 | 6.361 | -10.679 | -21.702 | -6.463 |
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 | 0.16 | 0.55 | 1.08 | 10 | -0.230 | 133 | â | â |
| Liu et al. | 2025 | 0.18 | 0.13 | â | 13 | â | â | â | â |
| Hunt & Reffert | 2024 | â | â | â | â | â | 133(1) | â | â |
| Cavallo et al. | 2024 | 0.16 | 2.22 | â | 7 | -0.230 | â | â | â |
| Hunt & Reffert | 2023 | 0.15 | 0.55 | 1.08 | 10 | 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 253 along with OCSN_98, and of multiple system 72 along with OCSN_96, HSC_2931, OCSN_98, OCSN_100 and HSC_2919.
Palma et al. (2025)
Part of multiple system G172, along with OCSN_98, OCSN_96, HSC_2931, HSC_2919 and OCSN_100.
Cavallo et al. (2024)
Gold sample.