HSC 433

0.23 UTI

0.26

C_N

0.07

C_dens

0.75

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 26

Core radius and density 2.1 [pc], 0.3 [pc^-2]

C3 classification AB

C_N 0.26 Poorly populated
C_dens 0.07 Very loose
C_C3 0.75 High 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 433 is a poorly populated, very loose object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by high extinction. It is catalogued as a metal-rich, 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 Metal-rich Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for HSC 433 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–	289.608	18.671	0.725	-0.919	-5.615	2.507
Hunt & Reffert	2024	289.609	18.74	0.718	-0.919	-5.639	32.242
Cavallo et al.	2024	289.592	18.705	0.717	–	–	–
Hunt & Reffert	2023	289.609	18.74	0.718	-0.919	-5.639	32.242

💡 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–	1.35	3.58	0.38	25	0.650	256	–	–
Hunt & Reffert	2024	1.35	3.58	0.38	25	–	256⁽¹⁾	–	–
Cavallo et al.	2024	1.64	3.68	–	19	0.650	–	–	–
Hunt & Reffert	2023	1.35	3.58	0.38	25	–	–	–	–

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

Visualization

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