UBC 7

(FoF 2385)

0.73 UTI

0.76

C_N

1.0

C_dens

1.0

C_C3

0.5

C_lit

0.98

C_dup

C3 classification AA

Number of members (P>50%) 123

Radius (P>50% members) 24.8 [arcmin]

C_N 0.76 Rich
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.5 Moderately studied
C_dup 0.98 Unique

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

Overview

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UBC 7 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is moderately studied in the literature.

Note: This is a unique object, which shares a very small percentage of members with at least one previously reported entry. See table with shared members information.

Very close Low extinction Near-solar metallicity Young

Data

🔍 Search references for UBC 7 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	–	106.63	-37.703	3.592	-9.691	7.056	15.281
Li et al.	2025	106.786	-37.729	3.558	-9.703	6.982	–
Wei et al.	2025	106.716	-37.73	3.603	-9.671	7.035	–
Alfonso et al.	2024	106.811	-37.59	3.546	-9.749	6.954	–
He et al.	2022	106.729	-37.652	3.607	-9.721	7.073	–
Cantat-Gaudin et al.	2020	106.786	-37.729	3.558	-9.703	6.982	–
Cantat-Gaudin & Anders	2020	106.786	-37.729	3.558	-9.703	6.982	–
Liu & Pang	2019	106.851	-37.841	3.578	-9.755	7.029	–
Castro-Ginard et al.	2018	106.923	-37.744	3.563	-9.744	6.999	16.42

💡 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
Li et al.	2025	0.27	0.12	–	38	0.046	–	–	–
Wei et al.	2025	0.29	0.51	–	13	0.500	159	0.27	–
Alfonso et al.	2024	0.28	0.10	–	37	0.010	–	–	–
He et al.	2022	–	0.40	–	35	–	–	–	–
Cantat-Gaudin et al.	2020	0.28	0.10	–	32	–	–	–	–
Cantat-Gaudin & Anders	2020	0.28	–	–	–	–	–	–	–
Liu & Pang	2019	–	–	–	6	0.000	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Alessi 36	100.0	106.61	-37.64	3.61	-9.66	7.08	15.36	0.31
OCSN 210	100.0	106.61	-37.67	3.6	-9.68	7.09	15.36	0.01
Collinder 135	2.4	109.36	-36.95	3.34	-10.04	6.22	15.1	0.97

💡 Note: The % column shows the percentage of members that UBC 7 shares with each listed object.

Visualization

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