Collinder 347

0.73 UTI

0.78

C_N

1.0

C_dens

0.75

C_C3

0.55

C_lit

1.0

C_dup

N₅₀ (P>50% members) 184

Stellar density (N₅₀/rad) 16.7 [N/pc²]

C3 classification AB

C_N 0.78 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.55 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Collinder 347 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate^* distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, very young cluster (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~3.00 kpc) differs significantly from the median photometric distance (~1.75 kpc).

Relatively close High extinction Massive Near-solar metallicity Very young

Palma et al. (2025)
Part of multiple system G23, along with BH_245, NGC_6451 and HSC_2985.

Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, with submm emission not associated with the cluster.

Cavallo et al. (2024)
Silver sample.

Data

🔍 Search references for Collinder 347 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–	266.575	-29.335	0.333	0.377	-1.889	8.865
Hunt & Reffert	2024	266.581	-29.345	0.334	0.392	-1.886	21.376
Cavallo et al.	2024	266.584	-29.333	0.333	–	–	–
He et al.	2023	266.586	-29.344	0.347	0.324	-1.75	8.86
Hunt & Reffert	2023	266.581	-29.345	0.334	0.392	-1.886	21.376
Dias et al.	2014	266.575	-29.333	–	-1.94	-2.13	–
Morales et al.	2013	266.575	-29.333	–	–	–	–
Bukowiecki et al.	2011	266.525	-29.262	–	–	–	–
van den Bergh	2006	266.6	-29.3	–	–	–	–
Dias et al.	2002	266.575	-29.333	–	-1.94	-2.13	–

💡 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–	1.75	3.935	3.0	12	-0.320	1868	–	–
Hunt & Reffert	2024	–	–	–	–	–	2548⁽¹⁾	–	–
Cavallo et al.	2024	1.75	4.53	–	5	-0.320	–	–	–
He et al.	2023	2.57	4.45	–	2	–	–	–	–
Hunt & Reffert	2023	2.78	4.27	3.00	6	–	–	–	–
Morales et al.	2013	1.51	–	–	12	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	1188	–	–
Bukowiecki et al.	2011	2.10⁽¹⁾	3.07	–	13	–	–	–	–
van den Bergh	2006	1.51	3.60	–	12	–	–	–	–
Dias et al.	2002	1.51	3.60	–	12	–	–	–	–

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

Visualization

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