Collinder 34

0.22 UTI

0.78

C_N

1.0

C_dens

0.75

C_C3

0.25

C_lit

0.36

C_dup

N₅₀ (P>50% members) 188

Stellar density (N₅₀/rad) 26.5 [N/pc²]

C3 classification AB

C_N 0.78 Rich
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.25 Poorly studied
C_dup 0.36 Possibly duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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Collinder 34 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate^* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, young cluster (see Parameters). It is poorly studied in the literature, with no articles listed in the last 7 years.

⚠️ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.

(*): The parallax distance estimate (~2.29 kpc) differs significantly from the median photometric distance (~1.31 kpc).

Relatively close Moderate extinction Massive Near-solar metallicity Young

Data

🔍 Search references for Collinder 34 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–	44.83	60.57	0.437	-0.35	0.041	-55.546
Monteiro & Dias	2019	44.846	60.567	–	-0.208	0.122	2.471
Loktin & Popova	2017	44.85	60.567	–	1.433	-0.137	-40.0
Dias et al.	2014	44.846	60.567	–	0.4	0.44	-40.0
Bukowiecki et al.	2011	44.854	60.562	–	–	–	–

💡 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–	1.31	2.04	–	24	0.006	1134	–	–
Monteiro & Dias	2019	1.69	2.04	–	21	0.006	–	–	–
Loktin & Popova	2017	1.08	2.20	–	24	–	–	–	–
Bukowiecki et al.	2012	–	–	–	–	–	1134	–	–
Bukowiecki et al.	2011	1.31⁽¹⁾	1.55	–	562	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
SAI 24	63.8	44.83	60.57	0.45	-0.23	0.07	-49.28	0.84
CWNU 4436	13.8	44.87	60.57	0.23	-0.48	0.1	–	0.04
AFGL4029	2.1	45.21	60.54	0.44	-0.13	0.03	-30.61	0.14
IRAS 02575+6017	0.5	45.26	60.52	0.42	-0.06	-0.09	-30.61	0.29

💡 Note: The % column shows the percentage of members that Collinder 34 shares with each listed object.

Visualization

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