Collinder 458

(Harvard 21; MWSC 3774; OCL 273)

0.18 UTI

0.0

C_N

0.06

C_dens

0.12

C_C3

0.35

C_lit

1.0

C_dup

N₅₀ (P>50% members) 17

Stellar density (N₅₀/rad) 0.3 [N/pc²]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.06 Very loose
C_C3 0.12 Very low quality
C_lit 0.35 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Collinder 458 is a sparse, very loose object of very low C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by high extinction. It is catalogued as an intermediate-age cluster (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~3.92 kpc) differs significantly from the median photometric distance (~2.50 kpc).

⚠️ 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.

Relatively close High extinction Intermediate age

Data

🔍 Search references for Collinder 458 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–	358.623	61.78	0.255	-3.031	-1.092	-97.6
Just et al.	2023	358.547	61.736	–	–	–	–
Bica et al.	2019	358.571	61.735	–	–	–	–
Kharchenko et al.	2016	358.547	61.736	–	–	–	–
Kharchenko et al.	2013	358.555	61.74	–	0.05	-3.47	–
Kharchenko et al.	2012	358.555	61.74	–	0.05	-3.47	–
Dias et al.	2002	358.525	61.767	–	4.48	-6.37	–

💡 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–	2.5	3.41	–	150	–	54	–	–
Just et al.	2023	–	–	–	150	–	54	–	–
Kharchenko et al.	2016	2.50	3.41	–	150	–	–	–	–
Kharchenko et al.	2013	2.50	3.41	–	150	–	–	–	–
Kharchenko et al.	2012	2.50	3.41	–	150	–	–	–	–
Dias et al.	2002	1.94	2.63	–	178	–	–	–	–

Visualization

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