OC 0677

0.50 UTI

0.27

C_N

1.0

C_dens

0.75

C_C3

0.25

C_lit

1.0

C_dup

N₅₀ (P>50% members) 27

Stellar density (N₅₀/rad) 11.2 [N/pc²]

C3 classification BA

C_N 0.27 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 0677 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by high extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is poorly studied in the literature.

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

Relatively close High extinction Near-solar metallicity Intermediate age

Palma et al. (2025)
Classified as optical pair P163, along with UBC_324.

Cavallo et al. (2024)
Gold sample.

Data

🔍 Search references for OC 0677 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–	255.078	-38.785	0.525	-0.729	0.684	-0.687
Hunt & Reffert	2024	255.056	-38.782	0.536	-0.733	0.688	10.675
Cavallo et al.	2024	255.076	-38.787	0.536	–	–	–
Hunt & Reffert	2023	255.056	-38.782	0.536	-0.733	0.688	10.675
Hao et al.	2022	255.064	-38.784	0.518	-0.756	0.663	–

💡 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–	1.69	3.08	2.07	185	-0.100	415	–	–
Hunt & Reffert	2024	–	–	–	–	–	415⁽¹⁾	–	–
Cavallo et al.	2024	1.65	3.14	–	447	-0.250	–	–	–
Hunt & Reffert	2023	1.73	3.08	2.07	185	–	–	–	–
Hao et al.	2022	–	2.52	–	10	0.051	–	–	–

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

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
CWNU 355	100.0	255.08	-38.78	0.52	-0.73	0.73	-9.44	0.35

💡 Note: The % column shows the percentage of members that OC 0677 shares with each listed object.

Visualization

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