OC 0513

0.42 UTI

0.0

C_N

1.0

C_dens

0.5

C_C3

0.3

C_lit

1.0

C_dup

N₅₀ (P>50% members) 23

Stellar density (N₅₀/rad) 39.3 [N/pc²]

C3 classification BB

C_N 0.0 Sparse
C_dens 1.0 Very dense
C_C3 0.5 Intermediate quality
C_lit 0.3 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OC 0513 is a sparse, very dense object of intermediate C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It is poorly studied in the literature.

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

Relatively close Moderate extinction Near-solar metallicity Very young

Liu et al. (2025)
Classified as tidal capture (resonant trapping binary) 104 along with CWNU_1300, and as tidal capture (resonant trapping binary) 328 along with PHOC_30, and of multiple system 38 along with PHOC_30 and CWNU_1300.

Palma et al. (2025)
Part of multiple system G41, along with CWNU_1768 and PHOC_30.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for OC 0513 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–	142.723	-51.42	0.532	-5.621	4.055	–
Liu et al.	2025	142.71	-51.42	0.53	-5.57	4.05	–
Hunt & Reffert	2024	142.714	-51.42	0.528	-5.573	4.046	–
Cavallo et al.	2024	142.753	-51.429	0.532	–	–	–
Hunt & Reffert	2023	142.714	-51.42	0.528	-5.573	4.046	–
Hao et al.	2022	142.72	-51.422	0.537	-5.603	4.072	–

💡 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–	1.79	2.39	1.58	5	0.081	267	–	–
Liu et al.	2025	3.31	0.79	–	30	–	–	–	–
Hunt & Reffert	2024	–	–	–	–	–	267⁽¹⁾	–	–
Cavallo et al.	2024	1.43	2.37	–	5	-0.450	–	–	–
Hunt & Reffert	2023	1.79	2.41	1.58	5	–	–	–	–
Hao et al.	2022	–	3.55	–	5	0.611	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWWDL 13561	72.0	142.72	-51.42	0.53	-5.63	4.1	–	0.08

💡 Note: The % column shows the percentage of members that OC 0513 shares with each listed object.

Visualization

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