HSC 1375

0.16 UTI

0.0

C_N

0.05

C_dens

0.62

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 21

Core radius and density 2.5 [pc], 0.3 [pc^-2]

C3 classification AC

C_N 0.0 Sparse
C_dens 0.05 Very loose
C_C3 0.62 Intermediate 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 1375 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a relatively close 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: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.99 (50th percentile), true positive (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.99 (50th percentile), true positive (human-assigned).

Data

🔍 Search references for HSC 1375 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–	85.907	33.414	0.621	0.488	-3.063	-141.072
Zhang et al.	2024	85.952	33.288	–	–	–	–
Hunt & Reffert	2024	85.952	33.288	0.619	0.487	-3.054	–
Cavallo et al.	2024	85.895	33.431	0.62	–	–	–
Hunt & Reffert	2023	85.952	33.288	0.619	0.487	-3.054	–

💡 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–	1.64	1.05	0.96	102	-0.114	67	–	–
Zhang et al.	2024	–	–	–	–	-0.217⁽¹⁾	–	–	–
Hunt & Reffert	2024	1.64	1.05	0.96	102	–	67⁽¹⁾	–	–
Cavallo et al.	2024	1.71	1.16	–	68	-0.010	–	–	–
Hunt & Reffert	2023	1.64	1.05	0.96	103	–	–	–	–

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

Visualization

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