CWNU 313

0.14 UTI

0.0

C_N

0.09

C_dens

0.12

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 21

Stellar density (N₅₀/rad) 0.5 [N/pc²]

C3 classification DC

C_N 0.0 Sparse
C_dens 0.09 Very loose
C_C3 0.12 Very low quality
C_lit 0.25 Poorly studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

ℹ️

CWNU 313 is a sparse, very loose object of very low 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 absorption parameter (see Parameters). It is poorly studied in the literature.

⚠️ Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicate that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

Close Low extinction Near-solar metallicity Young

Liu et al. (2025)
Classified as hyperbolic encounter pair 66 along with UPK_42.

Palma et al. (2025)
Part of multiple system G61, along with HSC_300 and UPK_42.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as a moving group.

Data

🔍 Search references for CWNU 313 in: SciX Simbad

ℹ️

Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	99999–	294.957	-1.468	1.687	0.377	-2.533	-14.581
Cavallo et al.	2024	295.329	-0.681	1.725	–	–	–
Hunt & Reffert	2023	295.138	-1.992	1.722	0.556	-2.529	-15.903
He et al.	2022	294.705	-1.134	1.65	0.36	-2.48	–

💡 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–	0.585	0.6	0.67	38	0.399	–	–	–
Liu et al.	2025	0.83	0.29	–	35	–	–	–	–
Cavallo et al.	2024	0.62	1.00	–	31	0.260	–	–	–
Hunt & Reffert	2023	0.55	0.66	0.67	40	–	–	–	–
He et al.	2022	0.54	0.54	–	50	0.537	–	–	–

Visualization

ℹ️

1 2