HSC 635

0.21 UTI

0.25

C_N

0.35

C_dens

0.38

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 25

Core radius and density 1.4 [pc], 1.8 [pc^-2]

C3 classification BC

C_N 0.25 Poorly populated
C_dens 0.35 Loose
C_C3 0.38 Low 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

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HSC 635 is a poorly populated, loose object of low C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a metal-rich, 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 Metal-rich Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Data

🔍 Search references for HSC 635 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–	317.766	36.3	0.91	-0.036	0.592	2.238
Hunt & Reffert	2024	317.776	36.279	0.903	-0.048	0.59	-6.108
Cavallo et al.	2024	317.788	36.294	0.902	–	–	–
Hunt & Reffert	2023	317.776	36.279	0.903	-0.048	0.59	-6.108

💡 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–	1.05	0.27	0.43	245	0.620	53	–	–
Hunt & Reffert	2024	1.05	0.27	0.43	245	–	53⁽¹⁾	–	–
Cavallo et al.	2024	1.04	0.08	–	468	0.620	–	–	–
Hunt & Reffert	2023	1.05	0.27	0.43	245	–	–	–	–

(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 3322	96.0	317.77	36.29	0.91	-0.04	0.59	2.24	0.01

💡 Note: The % column shows the percentage of members that HSC 635 shares with each listed object.

Visualization

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