UBC 1617

0.18 UTI

0.26

C_N

0.02

C_dens

0.5

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 26

Core radius and density 6.4 [pc], 0.1 [pc^-2]

C3 classification BB

C_N 0.26 Poorly populated
C_dens 0.02 Very loose
C_C3 0.5 Intermediate 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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UBC 1617 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a large distance, above the mid-plane, affected by low extinction. It is catalogued as a metal-rich, intermediate-age 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.

Very distant Low extinction Metal-rich Intermediate age

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 1.00 (50th percentile), true positive (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 1.00 (50th percentile), true positive (human-assigned).

Data

🔍 Search references for UBC 1617 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–	124.38	-30.23	0.162	-2.679	3.035	98.422
Hunt & Reffert	2024	124.418	-30.292	0.165	-2.668	3.036	117.496
Cavallo et al.	2024	124.358	-30.231	0.164	–	–	–
Hunt & Reffert	2023	124.418	-30.292	0.165	-2.668	3.036	117.496
Castro-Ginard et al.	2022	124.38	-30.23	0.16	-2.66	3.04	–

💡 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–	5.24	0.635	0.47	502	0.660	231	–	–
Hunt & Reffert	2024	5.16	0.63	0.47	514	–	231⁽¹⁾	–	–
Cavallo et al.	2024	5.32	0.57	–	490	0.660	–	–	–
Hunt & Reffert	2023	5.16	0.64	0.47	514	–	–	–	–
Castro-Ginard et al.	2022	6.88	0.85	–	320	–	–	–	–

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

Visualization

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