HSC 480

0.24 UTI

0.0

C_N

0.52

C_dens

0.75

C_C3

0.0

C_lit

0.96

C_dup

N₅₀ (P>50% members) 23

Stellar density (N₅₀/rad) 2.6 [N/pc²]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.52 Moderately dense
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 0.96 Unique

📥 Members 📊 Colab 🔬 Bayestar19

MOCA 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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HSC 480 is a sparse, moderately dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by very high extinction. It is catalogued as a massive, metal-rich, very young cluster (see Parameters). It was recently reported in the literature.

Note: This is a unique object, which shares a very small percentage of members with at least one previously reported entry. See table with shared members information.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=0.96) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Distant Very high extinction Massive Metal-rich Very young

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 480 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–	295.235	23.034	0.215	-2.462	-5.345	68.78
Hunt & Reffert	2024	295.233	23.036	0.224	-2.464	-5.336	68.826
Cavallo et al.	2024	295.284	23.08	0.225	–	–	–
Hunt & Reffert	2023	295.233	23.036	0.224	-2.464	-5.336	68.826

💡 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–	3.695	5.185	2.53	14	0.670	1086	–	–
Hunt & Reffert	2024	–	–	–	–	–	1086⁽¹⁾	–	–
Cavallo et al.	2024	3.27	4.93	–	18	0.670	–	–	–
Hunt & Reffert	2023	4.12	5.44	2.53	9	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Collinder 404	4.0	295.59	23.11	0.22	-2.49	-5.32	23.86	0.24

💡 Note: The % column shows the percentage of members that HSC 480 shares with each listed object.

Visualization

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