CWNU 1229

0.19 UTI

0.6

C_N

1.0

C_dens

0.75

C_C3

0.0

C_lit

0.41

C_dup

N₅₀ (P>50% members) 70

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

C3 classification AB

C_N 0.6 Moderately populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 0.41 Possibly duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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CWNU 1229 is a moderately populated, very dense object of high C3 quality. Its parallax locates it at a close^* distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster (see Parameters). It is rarely studied in the literature.

⚠️ 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 (~0.93 kpc) differs significantly from the median photometric distance (~1.34 kpc).

Relatively close Moderate extinction Near-solar metallicity Very young

Palma et al. (2025)
Classified as tidal capture (resonant trapping pair) P4, along with HSC_1031.

Cavallo et al. (2024)
Wood sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.06 (50th percentile), false positive (human-assigned).

Data

🔍 Search references for CWNU 1229 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–	20.879	61.808	1.079	-1.448	-1.543	-6.045
Hunt & Reffert	2024	20.904	61.836	1.071	-1.441	-1.582	10.615
Cavallo et al.	2024	20.769	61.659	1.068	–	–	–
Hunt & Reffert	2023	20.904	61.836	1.071	-1.441	-1.582	10.615
He et al.	2022	20.939	61.715	1.073	-1.355	-1.481	–

💡 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–	1.345	2.4	2.49	16	-0.230	145	–	–
Hunt & Reffert	2024	–	–	–	–	–	145⁽¹⁾	–	–
Cavallo et al.	2024	1.76	2.40	–	16	-0.230	–	–	–
Hunt & Reffert	2023	0.93	1.67	2.49	18	–	–	–	–
He et al.	2022	–	2.45	–	16	–	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
BDSB 52	58.6	20.86	61.85	1.09	-1.46	-1.43	-21.24	0.44

💡 Note: The % column shows the percentage of members that CWNU 1229 shares with each listed object.

Visualization

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