HSC 1262

0.00 UTI

0.77

C_N

1.0

C_dens

1.0

C_C3

0.3

C_lit

0.0

C_dup

N₅₀ (P>50% members) 154

Stellar density (N₅₀/rad) 9.5 [N/pc²]

C3 classification AA

C_N 0.77 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.3 Poorly studied
C_dup 0.0 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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HSC 1262 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption parameter (see Parameters). It was recently reported in the literature.

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

Very close Low extinction Near-solar metallicity Very young

Liu et al. (2025)
Classified as primordial binary cluster 189 along with OC_0280.

Palma et al. (2025)
Part of multiple system G109, along with HSC_1234 and HSC_1257.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for HSC 1262 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–	57.798	35.105	2.561	3.356	-4.364	20.933
Zhang et al.	2024	57.644	35.075	–	–	–	–
Hunt & Reffert	2024	57.644	35.075	2.563	3.375	-4.379	19.6
Cavallo et al.	2024	57.99	35.084	2.56	–	–	–
Hunt & Reffert	2023	57.644	35.075	2.563	3.375	-4.379	19.6

💡 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–	0.39	0.44	1.05	5	-0.247	97	–	–
Liu et al.	2025	0.46	0.23	–	13	–	–	–	–
Zhang et al.	2024	–	–	–	–	-0.145⁽¹⁾	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	97⁽¹⁾	–	–
Cavallo et al.	2024	0.39	1.19	–	3	-0.350	–	–	–
Hunt & Reffert	2023	0.37	0.44	1.05	5	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OCSN 107	100.0	57.9	35.09	2.58	3.37	-4.41	21.13	0.47
CWNU 514	27.9	58.48	35.12	2.58	3.43	-4.37	22.82	0.46

💡 Note: The % column shows the percentage of members that HSC 1262 shares with each listed object.

Visualization

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