OMC-1

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0.39 UTI
0.74
CN
1.0
Cdens
0.62
CC3
0.0
Clit
0.82
Cdup
Stellar density (N50/rad) 1145.7 [N/pc2]
  • CN 0.74 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 0.62 Intermediate quality
  • Clit 0.0 Rarely studied
  • Cdup 0.82 Very likely unique

Overview

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OMC-1 is a moderately populated, very dense object of intermediate C3 quality. Its parallax locates it at a very close distance, below the mid-plane. No fundamental parameter values are available for this object. It is rarely studied in the literature, with no articles listed in the last 23 years.

Note: This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry, and a significant percentage with at least one entry reported in the same catalogue. See table with shared members information.

Bica et al. (2003)
Classified as infrared cluster (IRC).

Data

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Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 83.817 -5.375 2.499 0.952 -0.071 -7.13
Bica et al. 2003 83.813 -5.37 – – – –

💡 Note: The UCC values are estimated from its identified members.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
Orion Nebula 54.6 83.82 -5.36 2.51 1.23 0.18 25.16 0.34
OCSN 225 49.5 83.84 -4.96 2.55 1.25 -0.08 22.73 0.36
NGC 1977 17.5 83.84 -4.86 2.53 1.26 -0.71 23.87 0.81
UBC 621 16.5 83.83 -4.86 2.53 1.25 -0.72 22.95 0.05
NGC 1976 12.4 83.82 -5.45 2.58 1.25 0.19 19.86 0.77
OCSN 244 12.4 83.82 -5.43 2.52 1.39 0.33 25.62 0.25
UBC 208 5.2 83.81 -5.95 2.6 1.24 0.54 23.25 0.06
NGC 1980 4.1 83.82 -5.96 2.6 1.24 0.55 20.88 0.82
OCSN 226 4.1 83.82 -5.96 2.61 1.26 0.55 23.02 0.02
OMC-2 2.1 83.85 -5.17 2.54 1.04 -0.02 26.69 0.17
OC 0345 1.0 83.77 -5.87 2.58 1.06 0.21 19.86 0.03

💡 Note: The % column shows the percentage of members that OMC-1 shares with each listed object.

Visualization

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