HSC 1259

0.15 UTI

0.25

C_N

0.08

C_dens

0.38

C_C3

0.03

C_lit

1.0

C_dup

N_m (P>50%) 25

Core radius and density 2.5 [pc], 0.4 [pc^-2]

C3 classification BC

C_N 0.25 Poorly populated
C_dens 0.08 Very 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 1259 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a large distance, well above the mid-plane, affected by low extinction. It is catalogued as a metal-poor, intermediate-age cluster (see Parameters). It was recently reported in the literature.

⚠️ 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 Low extinction Metal-poor Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.91 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.91 (50th percentile).

Data

🔍 Search references for HSC 1259 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–	78.819	49.663	0.167	0.725	-0.486	-32.371
Hunt & Reffert	2024	78.81	49.664	0.167	0.678	-0.494	-0.518
Cavallo et al.	2024	78.796	49.707	0.169	–	–	–
Hunt & Reffert	2023	78.81	49.664	0.167	0.678	-0.494	-0.518

💡 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–	4.93	0.94	2.29	413	-0.650	180	–	–
Hunt & Reffert	2024	4.93	0.94	2.29	413	–	180⁽¹⁾	–	–
Cavallo et al.	2024	3.40	1.23	–	468	-0.650	–	–	–
Hunt & Reffert	2023	4.93	0.94	2.29	413	–	–	–	–

(N): Indicates that there are N extra values assigned to this parameter in the corresponding reference.

Visualization

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