HSC 183

0.23 UTI

0.27

C_N

0.37

C_dens

0.5

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 27

Core radius and density 1.4 [pc], 1.9 [pc^-2]

C3 classification BB

C_N 0.27 Poorly populated
C_dens 0.37 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 183 is a poorly populated, loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as an 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.

Relatively close High extinction Intermediate age

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.84 (50th percentile), false positive? (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.84 (50th percentile), false positive? (human-assigned).

Data

🔍 Search references for HSC 183 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–	275.627	-16.0	0.336	0.659	-0.19	9.508
Hunt & Reffert	2024	275.638	-16.003	0.329	0.66	-0.228	8.092
Hunt & Reffert	2023	275.638	-16.003	0.329	0.66	-0.228	8.092

💡 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–	2.84	4.75	1.96	108	–	477	–	–
Hunt & Reffert	2024	2.84	4.75	1.96	108	–	477⁽¹⁾	–	–
Hunt & Reffert	2023	2.84	4.75	1.96	108	–	–	–	–

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

Visualization

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