UBC 159

(OCSN 286)

0.21 UTI

0.6

C_N

1.0

C_dens

1.0

C_C3

0.7

C_lit

0.26

C_dup

C3 classification AA

Number of members (P>50%) 69

Radius (P>50% members) 8.8 [arcmin]

C_N 0.6 Moderately populated
C_dens 1.0 Very dense
C_C3 1.0 Very high quality
C_lit 0.7 Moderately studied
C_dup 0.26 Possibly duplicate

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

Overview

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UBC 159 is a moderately populated, 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, metallicity, and mass parameters (see Parameters). It is moderately studied in the literature.

⚠️ Warning: This is possibly a duplicate object, which shares a significant 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

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for UBC 159 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	–	339.036	39.616	2.004	-1.928	-4.836	-13.739
Li et al.	2025	339.03	39.621	1.988	-1.905	-4.786	–
Wei et al.	2025	339.084	39.667	2.004	-1.874	-4.992	–
Alfonso et al.	2024	339.159	39.475	1.971	-1.881	-5.118	–
Zhang et al.	2024	338.997	39.635	–	–	–	–
Hunt & Reffert	2024	338.997	39.635	2.018	-2.018	-4.676	-17.652
Celli et al.	2024	339.03	39.621	–	–	–	–
Cavallo et al.	2024	339.069	39.701	2.016	–	–	–
Hunt & Reffert	2023	338.997	39.635	2.018	-2.018	-4.676	-17.652
Qin et al.	2023	339.04	39.66	2.03	-2.0	-4.75	-14.76
He et al.	2022	339.007	39.98	2.018	-2.091	-4.628	–
Cantat-Gaudin et al.	2020	339.03	39.621	1.988	-1.905	-4.786	–
Castro-Ginard et al.	2020	339.065	39.653	1.982	-1.95	-4.722	–

💡 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	0.29	0.12	–	22	-0.256	–	–	–
Wei et al.	2025	0.53	0.98	–	4	0.000	747	0.52	–
Alfonso et al.	2024	0.47	0.82	–	17	0.010	–	–	–
Zhang et al.	2024	–	–	–	–	-0.436*	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	127*	–	–
Celli et al.	2024	–	–	–	14	–	112	–	–
Cavallo et al.	2024	0.51	0.99	–	4	-0.080	–	–	–
Hunt & Reffert	2023	0.48	0.42	1.72	5	–	–	–	–
Qin et al.	2023	0.67	0.71	–	20	–	–	–	–
He et al.	2022	–	0.05	–	5	–	–	–	–
Cantat-Gaudin et al.	2020	0.47	0.82	–	14	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
FSR 0321	73.9	338.99	39.63	2.01	-1.97	-4.85	-11.77	0.47
OC 0154	30.4	339.03	40.0	2.03	-2.01	-4.41	-15.95	0.38
CWWDL 14563	5.8	339.57	38.97	2.0	-1.59	-5.35	-22.61	0.35

💡 Note: The % column shows the percentage of members that UBC 159 shares with each listed object.

Visualization

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