HSC 1933

0.21 UTI

0.28

C_N

0.21

C_dens

0.5

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 28

Core radius and density 1.6 [pc], 1.1 [pc^-2]

C3 classification BB

C_N 0.28 Poorly populated
C_dens 0.21 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.03 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

HSC 1933 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by low 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 Low 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 1933 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	116.6	-25.526	0.442	-3.252	3.099	47.81
Hunt & Reffert	2024	116.611	-25.534	0.431	-3.268	3.085	–
Cavallo et al.	2024	116.593	-25.536	0.431	–	–	–
Hunt & Reffert	2023	116.611	-25.534	0.431	-3.268	3.085	–

💡 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–	2.06	0.42	0.47	201	-0.070	162	–	–
Hunt & Reffert	2024	2.06	0.42	0.47	201	–	162⁽¹⁾	–	–
Cavallo et al.	2024	2.14	0.89	–	135	-0.070	–	–	–
Hunt & Reffert	2023	2.06	0.42	0.47	201	–	–	–	–

(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 3662	100.0	116.6	-25.53	0.44	-3.25	3.1	47.81	0.0

💡 Note: The % column shows the percentage of members that HSC 1933 shares with each listed object.

Visualization

ℹ️

1 2