HSC 2661

0.53 UTI

0.64

C_N

1.0

C_dens

1.0

C_C3

0.0

C_lit

1.0

C_dup

N₅₀ (P>50% members) 79

Stellar density (N₅₀/rad) 5.9 [N/pc²]

C3 classification AA

C_N 0.64 Moderately populated
C_dens 1.0 Very dense
C_C3 1.0 Very 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 2661 is a moderately populated, very dense object of very 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, near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.

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

Distant Very high extinction Massive Near-solar metallicity Young

Cavallo et al. (2024)
Wood sample.

Data

🔍 Search references for HSC 2661 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–	222.379	-59.766	0.302	-4.682	-2.699	18.529
Hunt & Reffert	2024	222.377	-59.749	0.294	-4.714	-2.733	28.025
Cavallo et al.	2024	222.327	-60.0	0.294	–	–	–
Hunt & Reffert	2023	222.377	-59.749	0.294	-4.714	-2.733	28.025

💡 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–	3.175	5.485	3.05	34	0.430	1240	–	–
Hunt & Reffert	2024	–	–	–	–	–	1240⁽¹⁾	–	–
Cavallo et al.	2024	3.18	5.28	–	11	0.430	–	–	–
Hunt & Reffert	2023	3.17	5.69	3.05	58	–	–	–	–

(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 4359	62.0	222.38	-59.76	0.29	-4.63	-2.68	64.53	0.03

💡 Note: The % column shows the percentage of members that HSC 2661 shares with each listed object.

Visualization

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