CWNU 340

0.37 UTI

0.28

C_N

0.68

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 28

Core radius and density 0.8 [pc], 3.4 [pc^-2]

C3 classification AB

C_N 0.28 Poorly populated
C_dens 0.68 Moderately dense
C_C3 0.75 High quality
C_lit 0.06 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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CWNU 340 is a poorly populated, moderately dense object of high C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the metallicity parameter (see Parameters). It is rarely studied in the literature.

Close Low extinction Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.96 (50th percentile).

Data

🔍 Search references for CWNU 340 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–	106.767	-26.394	1.053	-3.68	4.681	28.317
Hunt & Reffert	2024	106.775	-26.398	1.037	-3.7	4.689	27.281
Cavallo et al.	2024	106.766	-26.371	1.049	–	–	–
Hunt & Reffert	2023	106.775	-26.398	1.037	-3.7	4.689	27.281
He et al.	2022	106.771	-26.397	1.06	-3.68	4.68	–

💡 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–	0.965	0.05	0.44	68	0.138	67	–	–
Hunt & Reffert	2024	0.91	0.04	0.44	87	–	67⁽¹⁾	–	–
Cavallo et al.	2024	1.04	0.31	–	38	-0.020	–	–	–
Hunt & Reffert	2023	0.91	0.04	0.44	87	–	–	–	–
He et al.	2022	1.02	0.06	–	50	0.295	–	–	–

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

Visualization

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