UPK 296

0.37 UTI

0.53

C_N

0.11

C_dens

0.5

C_C3

0.35

C_lit

1.0

C_dup

N_m (P>50%) 56

Core radius and density 3.0 [pc], 0.6 [pc^-2]

C3 classification BB

C_N 0.53 Moderately populated
C_dens 0.11 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.35 Poorly studied
C_dup 1.0 Unique

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

Overview

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UPK 296 is a moderately populated, very loose object of intermediate C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is poorly studied in the literature.

Close Low extinction Near-solar metallicity Intermediate age

Almeida et al. (2025)
Mass determination: good fit. Isochrone match: good fit. Silver sample.

Cavallo et al. (2024)
Gold sample.

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 UPK 296 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–	42.751	48.561	1.886	1.804	-6.758	-0.952
Li et al.	2025	42.666	48.561	1.866	1.935	-6.656	–
Almeida et al.	2025	42.581	48.597	–	–	–	–
Alfonso et al.	2024	43.334	48.287	1.85	1.735	-6.824	–
Zhang et al.	2024	42.323	48.607	–	–	–	–
Hunt & Reffert	2024	42.323	48.607	1.9	1.787	-6.788	-4.146
Cavallo et al.	2024	42.765	48.414	1.905	–	–	–
Hunt & Reffert	2023	42.323	48.607	1.9	1.787	-6.788	-4.146
Almeida et al.	2023	42.672	48.58	–	–	–	–
Dias et al.	2021	42.581	48.597	1.857	1.842	-6.629	-12.661
Cantat-Gaudin et al.	2020	42.666	48.561	1.866	1.935	-6.656	–
Cantat-Gaudin & Anders	2020	42.667	48.571	1.841	1.771	-6.647	–
Sim et al.	2019	42.7	48.454	–	1.97	-6.75	–

💡 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–	0.53	0.39	0.85	257	-0.059	113	0.56	–
Li et al.	2025	0.54	0.67	–	98	-0.042	–	–	–
Almeida et al.	2025	0.53	0.63	–	330	–	113	–	–
Alfonso et al.	2024	0.56	0.39	–	226	-0.096	–	–	–
Zhang et al.	2024	–	–	–	–	-0.075⁽¹⁾	–	–	–
Hunt & Reffert	2024	0.50	0.30	0.85	379	–	41⁽¹⁾	–	–
Cavallo et al.	2024	0.50	0.54	–	257	0.370	–	–	–
Hunt & Reffert	2023	0.50	0.30	0.85	378	–	–	–	–
Almeida et al.	2023	0.53	0.35	–	268	0.052	124⁽¹⁾	0.56	–
Tarricq et al.	2022	0.56	–	–	245	–	–	–	–
Dias et al.	2021	0.53	0.63	–	330	-0.096	–	–	–
Cantat-Gaudin et al.	2020	0.56	0.39	–	234	–	–	–	–
Cantat-Gaudin & Anders	2020	0.53	–	–	–	–	–	–	–
Sim et al.	2019	0.54	–	–	89	–	–	–	–

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

Visualization

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