HSC 1108

0.18 UTI

0.0

C_N

0.33

C_dens

0.5

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 20

Core radius and density 1.3 [pc], 1.6 [pc^-2]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.33 Loose
C_C3 0.5 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

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HSC 1108 is a sparse, loose object of intermediate C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by moderate extinction. It is catalogued as a very metal-poor, intermediate-age 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.

Very distant Moderate extinction Very metal-poor Intermediate age

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.14 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.14 (50th percentile).

Data

🔍 Search references for HSC 1108 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–	42.528	62.415	0.155	-0.616	0.268	-47.69
Hunt & Reffert	2024	42.543	62.419	0.172	-0.603	0.301	-47.688
Cavallo et al.	2024	42.516	62.407	0.171	–	–	–
Hunt & Reffert	2023	42.543	62.419	0.172	-0.603	0.301	-47.688

💡 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–	5.15	2.25	1.61	114	-1.150	363	–	–
Hunt & Reffert	2024	5.15	2.26	1.61	114	–	363⁽¹⁾	–	–
Cavallo et al.	2024	3.24	1.98	–	224	-1.150	–	–	–
Hunt & Reffert	2023	5.15	2.25	1.61	114	–	–	–	–

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

Visualization

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