HSC 153
0.14
UTI
0.0
CN
0.13
Cdens
0.5
CC3
0.03
Clit
1.0
Cdup
Nm (P>50%)
20
Core radius and density
2.3 [pc], 0.7 [pc-2]
- CN 0.0 Sparse
- Cdens 0.13 Very loose
- CC3 0.5 Intermediate quality
- Clit 0.03 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 153 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by high extinction. It is catalogued as a young cluster, but with a large variance across recent sources for the distance 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 | 275.202 | -19.993 | 0.559 | 0.311 | -1.294 | 5.472 |
| Liu et al. | 2025 | 275.21 | -19.99 | 0.56 | 0.28 | -1.27 | â |
| Hunt & Reffert | 2024 | 275.211 | -19.994 | 0.565 | 0.281 | -1.272 | â |
| Hunt & Reffert | 2023 | 275.211 | -19.994 | 0.565 | 0.281 | -1.272 | 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 | 1.66 | 3.14 | 1.03 | 80 | â | 209 | â | â |
| Liu et al. | 2025 | 6.28 | 1.08 | â | 126 | â | â | â | â |
| Hunt & Reffert | 2024 | 1.66 | 3.14 | 1.03 | 80 | â | 209(1) | â | â |
| Hunt & Reffert | 2023 | 1.66 | 3.14 | 1.03 | 80 | 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 tidal capture (resonant trapping binary) 161 along with Markarian_38, and of multiple system 46 along with Markarian_38 and Turner_3.
Palma et al. (2025)
Part of multiple system G214, along with Turner_3 and Markarian_38.
Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.93 (50th percentile).
Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.93 (50th percentile).