OC 0115

0.51 UTI

0.32

C_N

1.0

C_dens

0.75

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 32

Stellar density (N₅₀/rad) 16.9 [N/pc²]

C3 classification AB

C_N 0.32 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 High 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

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OC 0115 is a poorly 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, young cluster, but with a large variance across recent sources for the distance, age, and metallicity parameters (see Parameters). It is poorly studied in the literature.

(*): The parallax distance estimate (~0.97 kpc) differs significantly from the median photometric distance (~2.31 kpc).

Relatively close Moderate extinction Near-solar metallicity Young

Palma et al. (2025)
Part of multiple system G185, along with HSC_616 and HSC_618.

Cavallo et al. (2024)
Wood sample.

Data

🔍 Search references for OC 0115 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–	306.141	38.989	1.035	-1.442	-3.55	19.537
Hunt & Reffert	2024	306.139	39.011	1.012	-1.487	-3.545	-1.99
Cavallo et al.	2024	306.147	39.041	1.017	–	–	–
Hunt & Reffert	2023	306.139	39.011	1.012	-1.487	-3.545	-1.99
Hao et al.	2022	306.162	39.01	1.056	-1.379	-3.686	–

💡 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–	2.305	2.79	2.13	23	0.166	336	–	–
Hunt & Reffert	2024	–	–	–	–	–	336⁽¹⁾	–	–
Cavallo et al.	2024	3.65	2.02	–	1380	-0.280	–	–	–
Hunt & Reffert	2023	0.96	2.79	2.13	23	–	–	–	–
Hao et al.	2022	–	4.27	–	8	0.611	–	–	–

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

Visualization

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