HSC 1620

0.01 UTI

0.51

C_N

0.49

C_dens

0.75

C_C3

0.03

C_lit

0.02

C_dup

N_m (P>50%) 52

Core radius and density 1.7 [pc], 2.4 [pc^-2]

C3 classification AB

C_N 0.51 Moderately populated
C_dens 0.49 Loose
C_C3 0.75 High quality
C_lit 0.03 Rarely studied
C_dup 0.02 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 1620 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, intermediate-age cluster (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.

Distant Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.91 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.91 (50th percentile).

Data

🔍 Search references for HSC 1620 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–	101.086	6.971	0.21	-0.139	-0.543	–
Hunt & Reffert	2024	101.089	6.978	0.204	-0.114	-0.491	59.828
Cavallo et al.	2024	101.129	6.953	0.206	–	–	–
Hunt & Reffert	2023	101.089	6.978	0.204	-0.114	-0.491	59.828

💡 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–	4.14	1.48	2.08	166	0.460	691	–	–
Hunt & Reffert	2024	4.14	1.48	2.08	166	–	691⁽¹⁾	–	–
Cavallo et al.	2024	4.53	1.43	–	174	0.460	–	–	–
Hunt & Reffert	2023	4.14	1.48	2.08	166	–	–	–	–

(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 3179	100.0	101.09	6.97	0.21	-0.14	-0.55	53.15	0.14
Alessi 65	98.1	101.09	6.97	0.21	-0.14	-0.54	53.15	0.37

💡 Note: The % column shows the percentage of members that HSC 1620 shares with each listed object.

Visualization

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