CWNU 2530

0.44 UTI

0.57

C_N

0.49

C_dens

1.0

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 64

Core radius and density 1.8 [pc], 2.4 [pc^-2]

C3 classification AA

C_N 0.57 Moderately populated
C_dens 0.49 Loose
C_C3 1.0 Very 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 2530 is a moderately populated, loose object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by high extinction. It is catalogued as a young cluster, but with a large variance across recent sources for the distance parameter (see Parameters). It was recently reported in the literature.

Note: This object shares a moderate percentage of members with a later reported entry. See table with shared members information.

Relatively close High extinction Young

Liu et al. (2025)
Classified as primordial binary cluster 107 along with CWNU_1465.

Palma et al. (2025)
Classified as optical pair P311, along with CWNU_1465.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.92 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.92 (50th percentile).

Data

🔍 Search references for CWNU 2530 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–	270.495	-22.735	0.387	0.088	-1.163	-13.327
Hunt & Reffert	2024	270.493	-22.758	0.347	0.109	-1.183	-11.949
Hunt & Reffert	2023	270.493	-22.758	0.347	0.109	-1.183	-11.949
He et al.	2023	270.496	-22.735	0.408	0.061	-1.177	7.79

💡 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–	2.98	4.45	1.5	26	–	468	–	–
Liu et al.	2025	9.55	1.53	–	31	–	–	–	–
Hunt & Reffert	2024	2.98	4.45	1.50	23	–	468⁽¹⁾	–	–
Hunt & Reffert	2023	2.98	4.45	1.50	23	–	–	–	–
He et al.	2023	2.04	4.85	–	28	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 104	39.1	270.5	-22.74	0.4	0.07	-1.18	-51.85	0.0

💡 Note: The % column shows the percentage of members that CWNU 2530 shares with each listed object.

Visualization

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