Collinder 234

0.14 UTI

0.0

C_N

0.18

C_dens

0.5

C_C3

0.0

C_lit

1.0

C_dup

N_m (P>50%) 19

Core radius and density 1.6 [pc], 0.9 [pc^-2]

C3 classification BB

C_N 0.0 Sparse
C_dens 0.18 Very loose
C_C3 0.5 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Collinder 234 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane. No fundamental parameter values are available for this object. It is rarely studied in the literature, with no articles listed in the last 24 years.

Note: This object shares a large percentage of members with at least one entry reported in the same catalogue. See table with shared members information.

⚠️ 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.

No fundamental parameters

Bica et al. (2019)
Web updates in DAML02, some were later removed (2003 to 2010).

Dias et al. (2016)
Part of Tr 16 (Archinal, B. A. & Hynes, S. J. 2003); cat V3.5 (Jan 2016)

Data

🔍 Search references for Collinder 234 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–	161.274	-59.713	0.389	-7.15	2.676	-62.383
Dias et al.	2002	161.338	-59.75	–	–	–	–
Alter et al.	1970	161.321	-59.745	–	–	–	–

💡 Note: The UCC values are estimated from its identified members.

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Trumpler 16	76.0	161.26	-59.72	0.4	-6.89	2.59	-0.07	0.93

💡 Note: The % column shows the percentage of members that Collinder 234 shares with each listed object.

Visualization

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