HSC 1421

0.31 UTI

0.0

C_N

0.22

C_dens

0.75

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 22

Stellar density (N₅₀/rad) 1.1 [N/pc²]

C3 classification AB

C_N 0.0 Sparse
C_dens 0.22 Very loose
C_C3 0.75 High quality
C_lit 0.3 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 1421 is a sparse, very loose object of high C3 quality. Its parallax locates it at a relatively close distance, near 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.

Relatively close Moderate extinction Near-solar metallicity Young

Liu et al. (2025)
Classified as primordial binary cluster 109 along with CWNU_1684.

Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P8, along with CWNU_1684.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1421 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–	85.079	27.339	0.622	1.055	-2.05	–
Zhang et al.	2024	85.059	27.454	–	–	–	–
Hunt & Reffert	2024	85.059	27.454	0.618	1.051	-2.084	–
Cavallo et al.	2024	85.108	27.301	0.616	–	–	–
Hunt & Reffert	2023	85.059	27.454	0.618	1.051	-2.084	–

💡 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–	1.57	1.18	0.64	29	-0.365	145	–	–
Liu et al.	2025	2.86	0.52	–	33	–	–	–	–
Zhang et al.	2024	–	–	–	–	-0.380⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	145⁽¹⁾	–	–
Cavallo et al.	2024	1.57	1.46	–	22	-0.350	–	–	–
Hunt & Reffert	2023	1.51	1.18	0.64	29	–	–	–	–

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

Visualization

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