HSC 2930

0.17 UTI

0.0

C_N

0.1

C_dens

0.75

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 21

Stellar density (N₅₀/rad) 0.5 [N/pc²]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.1 Very loose
C_C3 0.75 High 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 2930 is a sparse, very loose object of high C3 quality. Its parallax locates it at a moderate^* distance, above the mid-plane, affected by very high extinction. It is catalogued as a massive, near-solar metallicity, very young cluster (see Parameters). It was recently reported in the literature.

(*): The parallax distance estimate (~4.82 kpc) differs significantly from the median photometric distance (~3.47 kpc).

Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.

⚠️ 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.

Distant Very high extinction Massive Near-solar metallicity Very young

Cavallo et al. (2024)
Bronze sample.

Data

🔍 Search references for HSC 2930 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–	261.822	-33.388	0.207	-1.021	-3.008	–
Hunt & Reffert	2024	261.827	-33.388	0.217	-1.039	-2.95	8.286
Cavallo et al.	2024	261.75	-33.37	0.212	–	–	–
Hunt & Reffert	2023	261.827	-33.388	0.217	-1.039	-2.95	8.286

💡 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–	3.47	6.18	2.62	14	0.050	3395	–	–
Hunt & Reffert	2024	–	–	–	–	–	3395⁽¹⁾	–	–
Cavallo et al.	2024	2.96	6.01	–	11	0.050	–	–	–
Hunt & Reffert	2023	3.98	6.35	2.62	18	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 4261	60.0	261.82	-33.38	0.21	-1.01	-3.07	44.42	0.11

💡 Note: The % column shows the percentage of members that HSC 2930 shares with each listed object.

Visualization

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