OMC 2

0.17 UTI

0.0

C_N

1.0

C_dens

0.25

C_C3

0.0

C_lit

0.68

C_dup

N₅₀ (P>50% members) 23

Stellar density (N₅₀/rad) 104.4 [N/pc²]

C3 classification CC

C_N 0.0 Sparse
C_dens 1.0 Very dense
C_C3 0.25 Low 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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OMC 2 is a sparse, very dense object of low C3 quality. Its parallax locates it at a very close distance, below the mid-plane. It is catalogued as a cluster (see Parameters). It is rarely studied in the literature, with no articles listed in the last 23 years.

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.

Lada & Lada (2003)
Embedded cluster within ∼2 Kpc of the Sun.

Data

🔍 Search references for OMC 2 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–	83.855	-5.173	2.541	1.044	-0.025	26.687
Lada & Lada	2003	83.864	-5.161	–	–	–	–

💡 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–	0.5	–	–	–	–	63	–	–
Lada & Lada	2003	0.50	–	–	–	–	63	–	–

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OCSN 225	96.0	83.84	-4.96	2.55	1.25	-0.08	22.73	0.36
NGC 1976	32.0	83.82	-5.45	2.58	1.25	0.19	19.86	0.78
NGC 1977	20.0	83.84	-4.86	2.53	1.26	-0.71	23.87	0.82
UBC 621	20.0	83.83	-4.86	2.53	1.25	-0.72	22.95	0.05
OC 0345	12.0	83.77	-5.87	2.58	1.06	0.21	19.86	0.03
OCSN 244	8.0	83.82	-5.43	2.52	1.39	0.33	25.62	0.25

💡 Note: The % column shows the percentage of members that OMC 2 shares with each listed object.

Visualization

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