HSC 2176

0.12 UTI

0.26

C_N

0.11

C_dens

0.25

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 26

Stellar density (N₅₀/rad) 0.6 [N/pc²]

C3 classification DB

C_N 0.26 Poorly populated
C_dens 0.11 Very loose
C_C3 0.25 Low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 2176 is a poorly populated, very loose 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 near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (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 High extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Wood sample.

Data

🔍 Search references for HSC 2176 in: SciX Simbad

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Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	137.113	-46.964	0.513	-5.83	5.784	89.099
Hunt & Reffert	2024	137.099	-46.92	0.515	-5.83	5.78	89.273
Cavallo et al.	2024	137.128	-47.024	0.508	–	–	–
Hunt & Reffert	2023	137.099	-46.92	0.515	-5.83	5.78	89.273

💡 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–	2.385	3.215	2.34	228	0.430	137	–	–
Hunt & Reffert	2024	–	–	–	–	–	137⁽¹⁾	–	–
Cavallo et al.	2024	2.90	2.99	–	31	0.430	–	–	–
Hunt & Reffert	2023	1.87	3.44	2.34	425	–	–	–	–

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

Visualization

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