UBC 261

0.39 UTI

0.26

C_N

0.27

C_dens

0.75

C_C3

0.38

C_lit

0.96

C_dup

C3 classification AB

Number of members (P>50%) 26

Radius (P>50% members) 3.7 [arcmin]

C_N 0.26 Poorly populated
C_dens 0.27 Loose
C_C3 0.75 High quality
C_lit 0.38 Poorly studied
C_dup 0.96 Unique

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

Overview

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UBC 261 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is poorly 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.

Distant Moderate extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 261 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	–	159.526	-60.506	0.247	-5.595	2.631	–
Hunt & Reffert	2024	159.937	-60.475	0.216	-5.604	2.652	22.745
Celli et al.	2024	159.52	-60.503	–	–	–	–
Cavallo et al.	2024	159.855	-60.475	0.216	–	–	–
Hunt & Reffert	2023	159.937	-60.475	0.216	-5.604	2.652	22.745
Cantat-Gaudin et al.	2020	159.52	-60.503	0.222	-5.6	2.632	–
Castro-Ginard et al.	2020	159.542	-60.503	0.225	-5.597	2.616	–

💡 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
Hunt & Reffert	2024	–	–	–	–	–	678*	–	–
Celli et al.	2024	–	–	–	19	–	861	–	–
Cavallo et al.	2024	3.12	1.54	–	151	-0.290	–	–	–
Hunt & Reffert	2023	3.84	1.21	2.08	92	–	–	–	–
Cantat-Gaudin et al.	2020	3.94	0.82	–	19	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0547	65.4	159.52	-60.5	0.27	-5.59	2.65	–	0.07
Teutsch J1038.7-6018	3.8	159.89	-60.42	0.2	-5.59	2.67	1.31	0.22

💡 Note: The % column shows the percentage of members that UBC 261 shares with each listed object.

Visualization

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