UPK 110

0.20 UTI

0.37

C_N

0.11

C_dens

0.38

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 37

Core radius and density 1.3 [pc], 0.6 [pc^-2]

C3 classification BC

C_N 0.37 Poorly populated
C_dens 0.11 Very loose
C_C3 0.38 Low quality
C_lit 0.06 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UPK 110 is a poorly populated, very loose object of low C3 quality. Its parallax locates it at a close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is rarely studied in the literature.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Close Moderate extinction Near-solar metallicity Young

Palma et al. (2025)
Classified as optical pair (not dynamically associated) P79, along with ASCC_111.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.20 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.20 (50th percentile).

Data

🔍 Search references for UPK 110 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–	305.752	38.025	1.12	2.911	-1.202	-10.252
Hunt & Reffert	2024	305.774	38.006	1.127	2.828	-1.161	-8.226
Cavallo et al.	2024	305.615	37.887	1.124	–	–	–
Hunt & Reffert	2023	305.774	38.006	1.127	2.828	-1.161	-8.226
Sim et al.	2019	305.702	38.024	–	2.9	-1.17	–

💡 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–	0.87	1.27	1.63	98	0.230	67	–	–
Hunt & Reffert	2024	0.87	1.27	1.63	70	–	67⁽¹⁾	–	–
Cavallo et al.	2024	0.90	1.06	–	126	0.230	–	–	–
Hunt & Reffert	2023	0.87	1.27	1.63	70	–	–	–	–
Sim et al.	2019	0.86	–	–	447	–	–	–	–

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

Visualization

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