UBC 1619

0.43 UTI

0.34

C_N

0.47

C_dens

0.75

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 34

Stellar density (N₅₀/rad) 2.4 [N/pc²]

C3 classification AB

C_N 0.34 Poorly populated
C_dens 0.47 Loose
C_C3 0.75 High quality
C_lit 0.3 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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UBC 1619 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a relatively close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is poorly studied in the literature.

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

Relatively close Low extinction Near-solar metallicity Young

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 219 along with HSC_2097.

Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P34, along with HSC_2097.

Cavallo et al. (2024)
Silver sample.

Data

🔍 Search references for UBC 1619 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–	119.952	-45.583	0.612	-3.496	5.026	20.059
Hunt & Reffert	2024	119.958	-45.6	0.614	-3.478	5.029	26.052
Cavallo et al.	2024	119.943	-45.581	0.615	–	–	–
Hunt & Reffert	2023	119.958	-45.6	0.614	-3.478	5.029	26.052
Castro-Ginard et al.	2022	119.95	-45.6	0.61	-3.49	5.04	–

💡 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–	1.695	0.34	0.85	20	-0.230	153	–	–
Liu et al.	2025	1.91	0.17	–	10	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	153⁽¹⁾	–	–
Cavallo et al.	2024	1.68	0.30	–	19	-0.230	–	–	–
Hunt & Reffert	2023	1.53	0.39	0.85	22	–	–	–	–
Castro-Ginard et al.	2022	1.71	0.38	–	46	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 306	91.2	119.95	-45.58	0.61	-3.5	5.03	38.21	0.01

💡 Note: The % column shows the percentage of members that UBC 1619 shares with each listed object.

Visualization

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