HSC 2952

0.17 UTI

0.0

C_N

0.14

C_dens

0.62

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 20

Core radius and density 2.5 [pc], 0.7 [pc^-2]

C3 classification AC

C_N 0.0 Sparse
C_dens 0.14 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.03 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

ℹ️

HSC 2952 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a metal-poor, young cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Moderate extinction Metal-poor Young

Palma et al. (2025)
Classified as optical pair P361, along with CWNU_2676.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.41 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.41 (50th percentile).

Data

🔍 Search references for HSC 2952 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	262.962	-31.506	0.697	0.27	-4.315	-31.822
Hunt & Reffert	2024	262.947	-31.586	0.702	0.315	-4.233	-19.95
Cavallo et al.	2024	262.96	-31.536	0.7	–	–	–
Hunt & Reffert	2023	262.947	-31.586	0.702	0.315	-4.233	-19.95

💡 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]	B_frac	BSS
UCC	99999–	1.39	2.92	1.26	85	-0.770	146	–	–
Hunt & Reffert	2024	1.39	2.92	1.26	85	–	146⁽¹⁾	–	–
Cavallo et al.	2024	0.98	3.15	–	174	-0.770	–	–	–
Hunt & Reffert	2023	1.39	2.92	1.26	85	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

ℹ️

1 2