HSC 2168

0.18 UTI

0.0

C_N

0.5

C_dens

0.38

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 21

Stellar density (N₅₀/rad) 2.5 [N/pc²]

C3 classification BC

C_N 0.0 Sparse
C_dens 0.5 Moderately dense
C_C3 0.38 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 2168 is a sparse, moderately dense 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

Palma et al. (2025)
Part of multiple system G142, along with Collinder_205 and Muzzio_1.

Cavallo et al. (2024)
Wood sample.

Data

🔍 Search references for HSC 2168 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–	135.453	-47.073	0.524	-6.859	5.952	20.335
Hunt & Reffert	2024	135.535	-47.044	0.544	-6.814	5.96	22.227
Cavallo et al.	2024	135.449	-47.09	0.553	–	–	–
Hunt & Reffert	2023	135.535	-47.044	0.544	-6.814	5.96	22.227

💡 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–	2.315	4.875	2.5	132	0.250	247	–	–
Hunt & Reffert	2024	–	–	–	–	–	247⁽¹⁾	–	–
Cavallo et al.	2024	2.78	4.40	–	40	0.250	–	–	–
Hunt & Reffert	2023	1.85	5.35	2.50	224	–	–	–	–

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

Visualization

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