OC 0638

0.00 UTI

0.31

C_N

1.0

C_dens

0.75

C_C3

0.0

C_lit

0.0

C_dup

C3 classification BA

Number of members (P>50%) 31

Radius (P>50% members) 11.5 [arcmin]

C_N 0.31 Poorly populated
C_dens 1.0 Very dense
C_C3 0.75 High quality
C_lit 0.0 Rarely studied
C_dup 0.0 Very likely duplicate

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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OC 0638 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, young cluster (see Parameters). It is rarely 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, and a moderate percentage with at least one entry reported in the same catalogue. See table with shared members information.

Moderate extinction Near-solar metallicity Young

Data

🔍 Search references for OC 0638 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	–	261.004	-62.857	2.069	-0.342	-8.945	6.934
Hao et al.	2022	261.041	-62.86	2.09	-0.335	-8.928	–

💡 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]	Bfr	BSS
Hao et al.	2022	–	2.40	–	63	0.051	–	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
Alessi 24	100.0	260.78	-62.72	2.06	-0.45	-8.98	9.22	0.97
OC 0639	25.8	261.07	-62.46	2.04	-0.42	-8.97	8.85	0.0

💡 Note: The % column shows the percentage of members that OC 0638 shares with each listed object.

Visualization

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