UPK 281

0.23 UTI

0.58

C_N

0.17

C_dens

0.38

C_C3

0.0

C_lit

1.0

C_dup

C3 classification BC

Number of members (P>50%) 67

Radius (P>50% members) 47.4 [arcmin]

C_N 0.58 Moderately populated
C_dens 0.17 Very loose
C_C3 0.38 Low quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

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

Overview

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UPK 281 is a moderately populated, very loose object of low C3 quality. Its parallax locates it at a close distance, below the mid-plane. It is catalogued as an intermediate-age cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 7 years.

⚠️ 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 Intermediate age

Data

🔍 Search references for UPK 281 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	–	34.036	52.799	1.569	-4.176	0.336	-14.42
Sim et al.	2019	34.199	52.728	–	-4.07	0.39	–

💡 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
Sim et al.	2019	0.62	–	–	126	–	–	–	–

Visualization

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