UBC 1008

0.25 UTI

0.0

C_N

0.1

C_dens

1.0

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 23

Core radius and density 2.7 [pc], 0.5 [pc^-2]

C3 classification AA

C_N 0.0 Sparse
C_dens 0.1 Very loose
C_C3 1.0 Very high quality
C_lit 0.06 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UBC 1008 is a sparse, very loose object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a young cluster (see Parameters). It is rarely studied in the literature.

Relatively close Moderate extinction Young

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 358 along with Theia_1871.

Palma et al. (2025)
Part of multiple system G119, along with Theia_1871 and HSC_155.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 1.00 (50th percentile).

Data

🔍 Search references for UBC 1008 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–	273.324	-19.04	0.344	-0.849	-1.807	–
Hunt & Reffert	2024	273.314	-19.02	0.331	-0.87	-1.818	–
Hunt & Reffert	2023	273.314	-19.02	0.331	-0.87	-1.818	–
Castro-Ginard et al.	2022	273.34	-19.03	0.34	-0.84	-1.82	–

💡 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–	2.96	1.5	1.42	55	–	349	–	–
Liu et al.	2025	4.19	0.53	–	83	–	–	–	–
Hunt & Reffert	2024	2.74	1.72	1.42	41	–	349⁽¹⁾	–	–
Hunt & Reffert	2023	2.74	1.72	1.42	41	–	–	–	–
Castro-Ginard et al.	2022	3.18	1.28	–	69	–	–	–	–

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

Visualization

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