OC 0631

0.33 UTI

0.36

C_N

0.41

C_dens

0.75

C_C3

0.06

C_lit

1.0

C_dup

N_m (P>50%) 36

Core radius and density 1.6 [pc], 2.0 [pc^-2]

C3 classification AB

C_N 0.36 Poorly populated
C_dens 0.41 Loose
C_C3 0.75 High quality
C_lit 0.06 Rarely studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19

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

Overview

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OC 0631 is a poorly populated, loose object of high C3 quality. Its parallax locates it at a large distance, near the mid-plane, affected by very high extinction. It is catalogued as a very massive, metal-rich, 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.

Very distant Very high extinction Very massive Metal-rich Intermediate age

Cavallo et al. (2024)
Wood sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.57 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.57 (50th percentile).

Data

🔍 Search references for OC 0631 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–	234.866	-55.924	0.152	-3.837	-3.582	-105.326
Hunt & Reffert	2024	234.854	-55.927	0.166	-3.85	-3.576	-112.551
Cavallo et al.	2024	234.85	-55.935	0.167	–	–	–
Hunt & Reffert	2023	234.854	-55.927	0.166	-3.85	-3.576	-112.551
Hao et al.	2022	234.843	-55.932	0.148	-3.863	-3.614	–

💡 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–	5.08	5.895	2.05	414	0.643	6330	–	–
Hunt & Reffert	2024	5.08	6.32	2.05	414	–	6330⁽¹⁾	–	–
Cavallo et al.	2024	3.60	5.47	–	7	1.190	–	–	–
Hunt & Reffert	2023	5.08	6.32	2.05	414	–	–	–	–
Hao et al.	2022	–	5.12	–	794	0.097	–	–	–

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

Visualization

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