HSC 1880

0.36 UTI

0.55

C_N

0.36

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 59

Core radius and density 1.6 [pc], 1.8 [pc^-2]

C3 classification AB

C_N 0.55 Moderately populated
C_dens 0.36 Loose
C_C3 0.75 High quality
C_lit 0.06 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 1880 is a moderately populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It was recently reported in the literature.

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

Distant Moderate extinction Near-solar metallicity Young

Liu et al. (2025)
Classified as primordial binary cluster 120 along with CWWL_2084.

Palma et al. (2025)
Part of multiple system G60, along with CWWL_2084 and CWNU_2909.

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 1880 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–	115.733	-20.221	0.282	-2.375	2.876	–
Hunt & Reffert	2024	115.748	-20.22	0.281	-2.375	2.888	–
Cavallo et al.	2024	115.735	-20.223	0.285	–	–	–
Hunt & Reffert	2023	115.748	-20.22	0.281	-2.375	2.888	–

💡 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–	3.19	1.09	1.4	40	0.070	395	–	–
Liu et al.	2025	6.00	0.45	–	38	–	–	–	–
Hunt & Reffert	2024	3.14	1.09	1.40	42	–	395⁽¹⁾	–	–
Cavallo et al.	2024	3.24	1.27	–	32	0.070	–	–	–
Hunt & Reffert	2023	3.14	1.09	1.40	42	–	–	–	–

(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 3616	98.3	115.74	-20.22	0.28	-2.38	2.87	–	0.04

💡 Note: The % column shows the percentage of members that HSC 1880 shares with each listed object.

Visualization

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