OC 0255

0.00 UTI

0.0

C_N

1.0

C_dens

0.75

C_C3

0.25

C_lit

0.0

C_dup

N₅₀ (P>50% members) 22

Stellar density (N₅₀/rad) 116.1 [N/pc²]

C3 classification AB

C_N 0.0 Sparse
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.25 Poorly studied
C_dup 0.0 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OC 0255 is a sparse, very dense object of high C3 quality. Its parallax locates it at a moderate distance, above 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 metallicity parameter (see Parameters). It is poorly studied in the literature.

⚠️ Warning: This is very likely a duplicate object, which shares a large percentage of members with at least one previously reported entry. See table with shared members information.

Relatively close Moderate extinction Near-solar metallicity Very young

Palma et al. (2025)
Part of multiple system G225, along with SAI_24 and IC_1848.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for OC 0255 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–	43.538	60.657	0.468	-0.077	-0.234	–
Hunt & Reffert	2024	43.537	60.655	0.444	-0.067	-0.289	–
Cavallo et al.	2024	43.53	60.639	0.446	–	–	–
Hunt & Reffert	2023	43.537	60.655	0.444	-0.067	-0.289	–
Hao et al.	2022	43.538	60.649	0.532	-0.071	-0.142	–

💡 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–	1.92	1.57	1.33	5	0.396	180	–	–
Hunt & Reffert	2024	–	–	–	–	–	180⁽¹⁾	–	–
Cavallo et al.	2024	1.82	1.59	–	5	0.180	–	–	–
Hunt & Reffert	2023	2.02	1.57	1.33	5	–	–	–	–
Hao et al.	2022	–	1.32	–	3	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
LP 10	100.0	43.53	60.65	0.44	-0.08	-0.25	-43.05	0.1
SAI 23	96.0	43.53	60.66	0.45	-0.1	-0.24	-43.05	0.37

💡 Note: The % column shows the percentage of members that OC 0255 shares with each listed object.

Visualization

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