HSC 1388

0.24 UTI

0.33

C_N

0.34

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 33

Core radius and density 1.6 [pc], 1.7 [pc^-2]

C3 classification CB

C_N 0.33 Poorly populated
C_dens 0.34 Loose
C_C3 0.38 Low 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 1388 is a poorly populated, loose object of low C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, intermediate-age 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.

⚠️ 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 High extinction Near-solar metallicity Intermediate age

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 1388 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–	83.279	30.571	0.313	-0.038	-1.098	19.905
Zhang et al.	2024	83.275	30.569	–	–	–	–
Hunt & Reffert	2024	83.275	30.569	0.315	-0.061	-1.125	20.191
Cavallo et al.	2024	83.273	30.568	0.324	–	–	–
Hunt & Reffert	2023	83.275	30.569	0.315	-0.061	-1.125	20.191

💡 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–	2.95	3.73	1.87	151	0.170	578	–	–
Zhang et al.	2024	–	–	–	–	0.080⁽¹⁾	–	–	–
Hunt & Reffert	2024	2.95	3.73	1.87	151	–	578⁽¹⁾	–	–
Cavallo et al.	2024	2.73	3.62	–	251	0.260	–	–	–
Hunt & Reffert	2023	2.95	3.73	1.87	151	–	–	–	–

(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 3254	100.0	83.28	30.57	0.32	-0.04	-1.09	19.4	0.08

💡 Note: The % column shows the percentage of members that HSC 1388 shares with each listed object.

Visualization

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