HSC 1892

0.21 UTI

0.33

C_N

0.23

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 33

Core radius and density 1.1 [pc], 1.2 [pc^-2]

C3 classification CB

C_N 0.33 Poorly populated
C_dens 0.23 Very 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 1892 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the metallicity parameter (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.

Distant Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.16 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.16 (50th percentile).

Data

🔍 Search references for HSC 1892 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–	110.611	-23.621	0.221	-1.99	2.458	105.692
Hu & Soubiran	2025	110.624	-23.627	–	–	–	–
Hunt & Reffert	2024	110.633	-23.627	0.219	-1.986	2.458	105.663
Cavallo et al.	2024	110.624	-23.627	0.222	–	–	–
Hunt & Reffert	2023	110.633	-23.627	0.219	-1.986	2.458	105.663

💡 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–	3.95	2.24	1.84	467	0.005	331	–	–
Hu & Soubiran	2025	–	–	–	–	-0.260⁽⁵⁾	–	–	–
Hunt & Reffert	2024	3.95	2.24	1.84	467	–	331⁽¹⁾	–	–
Cavallo et al.	2024	3.25	2.25	–	1288	0.270	–	–	–
Hunt & Reffert	2023	3.95	2.24	1.84	467	–	–	–	–

(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 2958	93.9	110.61	-23.62	0.22	-1.99	2.48	105.69	0.01

💡 Note: The % column shows the percentage of members that HSC 1892 shares with each listed object.

Visualization

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