HSC 1801

0.05 UTI

0.0

C_N

0.15

C_dens

0.5

C_C3

0.0

C_lit

0.4

C_dup

N₅₀ (P>50% members) 23

Stellar density (N₅₀/rad) 0.7 [N/pc²]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.15 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 0.4 Possibly duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 1801 is a sparse, very loose object of intermediate 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 (see Parameters). It was recently reported in the literature.

⚠️ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1801 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–	107.392	-15.03	0.334	-0.944	1.386	55.454
Hunt & Reffert	2024	107.39	-15.004	0.329	-0.939	1.361	–
Cavallo et al.	2024	107.429	-15.03	0.326	–	–	–
Hunt & Reffert	2023	107.39	-15.004	0.329	-0.939	1.361	–

💡 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–	2.845	1.235	1.2	114	-0.150	194	–	–
Hunt & Reffert	2024	–	–	–	–	–	194⁽¹⁾	–	–
Cavallo et al.	2024	2.96	1.39	–	66	-0.150	–	–	–
Hunt & Reffert	2023	2.73	1.08	1.20	162	–	–	–	–

(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 2679	60.0	107.46	-15.18	0.35	-0.93	1.37	–	0.11

💡 Note: The % column shows the percentage of members that HSC 1801 shares with each listed object.

Visualization

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