UBC 661

0.52 UTI

0.39

C_N

0.73

C_dens

0.75

C_C3

0.38

C_lit

1.0

C_dup

C3 classification AB

Number of members (P>50%) 39

Radius (P>50% members) 4.8 [arcmin]

C_N 0.39 Poorly populated
C_dens 0.73 Moderately dense
C_C3 0.75 High quality
C_lit 0.38 Poorly studied
C_dup 1.0 Unique

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

Overview

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UBC 661 is a poorly populated, moderately dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It is poorly studied in the literature.

Relatively close Low extinction Near-solar metallicity Very young

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 661 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	–	168.265	-61.159	0.428	-5.832	1.29	–
Li et al.	2025	168.158	-61.132	0.423	-5.847	1.28	–
Hunt & Reffert	2024	168.358	-61.214	0.426	-5.818	1.295	–
Cavallo et al.	2024	168.25	-61.167	0.425	–	–	–
Hunt & Reffert	2023	168.358	-61.214	0.426	-5.818	1.295	–
Cantat-Gaudin et al.	2020	168.158	-61.132	0.423	-5.847	1.28	–
Castro-Ginard et al.	2020	168.141	-61.143	0.423	-5.851	1.28	–

💡 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	1.99	0.97	–	37	-0.162	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	269*	–	–
Cavallo et al.	2024	2.19	0.91	–	14	-0.220	–	–	–
Hunt & Reffert	2023	2.16	0.80	0.99	19	–	–	–	–

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Visualization

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