HSC 115

0.18 UTI

0.0

C_N

0.41

C_dens

0.5

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 24

Core radius and density 1.2 [pc], 2.0 [pc^-2]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.41 Loose
C_C3 0.5 Intermediate 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 115 is a sparse, loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by high extinction. It is catalogued as a 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 High extinction Young

Palma et al. (2025)
Classified as optical pair P401, along with HSC_100.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.81 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.81 (50th percentile).

Data

🔍 Search references for HSC 115 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–	273.112	-23.037	0.358	-0.346	-0.622	14.854
Hunt & Reffert	2024	273.108	-23.028	0.377	-0.325	-0.618	14.855
Hunt & Reffert	2023	273.108	-23.028	0.377	-0.325	-0.618	14.855

💡 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–	2.4	4.19	1.795	26	–	338	–	–
Hunt & Reffert	2024	2.40	4.19	1.80	26	–	338⁽¹⁾	–	–
Hunt & Reffert	2023	2.40	4.19	1.79	26	–	–	–	–

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

Visualization

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