OC 0287

0.12 UTI

0.0

C_N

0.28

C_dens

0.62

C_C3

0.0

C_lit

0.68

C_dup

N₅₀ (P>50% members) 20

Stellar density (N₅₀/rad) 1.4 [N/pc²]

C3 classification AC

C_N 0.0 Sparse
C_dens 0.28 Loose
C_C3 0.62 Intermediate quality
C_lit 0.0 Rarely studied
C_dup 0.68 Likely unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OC 0287 is a sparse, loose 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 massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is rarely studied in the literature.

(*): The parallax distance estimate (~1.60 kpc) differs significantly from the median photometric distance (~2.48 kpc).

Note: This is likely a unique object, which shares a moderate percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close Moderate extinction Massive Near-solar metallicity Intermediate age

Data

🔍 Search references for OC 0287 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–	79.463	38.032	0.625	1.036	-3.599	-19.368
Wei et al.	2025	79.414	38.032	0.631	1.063	-3.488	–
Hao et al.	2022	79.408	38.088	0.625	1.063	-3.612	–

💡 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–	2.48	1.355	–	144	0.430	1253	0.44	–
Wei et al.	2025	2.48	1.03	–	269	0.250	1253	0.44	–
Hao et al.	2022	–	1.68	–	20	0.611	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
HSC 1323	36.0	79.39	37.86	0.64	0.99	-3.53	-19.41	0.16
UBC 63	32.0	79.65	37.84	0.64	1.08	-3.55	-26.85	0.5

💡 Note: The % column shows the percentage of members that OC 0287 shares with each listed object.

Visualization

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