HSC 2275

0.17 UTI

0.0

C_N

0.36

C_dens

0.5

C_C3

0.0

C_lit

1.0

C_dup

C3 classification BB

Number of members (P>50%) 18

Radius (P>50% members) 2.1 [arcmin]

C_N 0.0 Sparse
C_dens 0.36 Loose
C_C3 0.5 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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HSC 2275 is a sparse, loose object of intermediate C3 quality. Its parallax locates it at a large distance, below the mid-plane, affected by high extinction. It is catalogued as an 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.

Very distant High extinction Intermediate age

Data

🔍 Search references for HSC 2275 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	–	146.931	-56.463	0.193	-4.848	3.504	41.19
Hunt & Reffert	2024	146.942	-56.458	0.196	-4.852	3.519	–
Hunt & Reffert	2023	146.942	-56.458	0.196	-4.852	3.519	–

💡 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]	Bfr	BSS
Hunt & Reffert	2024	–	–	–	–	–	531*	–	–
Hunt & Reffert	2023	5.05	3.13	0.39	301	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 3735	88.0	146.93	-56.46	0.19	-4.85	3.5	41.19	0.02

💡 Note: The % column shows the percentage of members that HSC 2275 shares with each listed object.

Visualization

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