IC 1442

(MWSC 3606; OCL 224)

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0.84 UTI
0.52
CN
0.69
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 54
Radius (P>50% members) 3.6 [arcmin]
  • CN 0.52 Moderately populated
  • Cdens 0.69 Moderately dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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IC 1442 is a moderately populated, moderately dense object of very high C3 quality. Its parallax locates it at a moderate* distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is very well-studied in the literature.

(*): The parallax distance estimate (~3.79 kpc) differs significantly from the median photometric distance (~2.35 kpc).

Note: This object shares a large percentage of members with 2 later reported entries. See table with shared members information.

Relatively close Moderate extinction Massive Near-solar metallicity Young

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: good fit.

Data
🔍 Search references for IC 1442 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 – 333.979 53.99 0.264 -3.33 -3.324 –
Almeida et al. 2025 333.965 53.994 – – – –
Celli et al. 2024 333.978 53.995 – – – –
Almeida et al. 2023 333.959 53.996 – – – –
Just et al. 2023 333.991 53.991 – – – –
Dias et al. 2021 333.965 53.994 0.263 -3.336 -3.282 –
Cantat-Gaudin et al. 2020 333.978 53.995 0.259 -3.341 -3.283 –
Bica et al. 2019 334.009 53.984 – – – –
Loktin & Popova 2017 334.125 54.05 – -2.67 -0.85 -63.5
Kharchenko et al. 2016 333.991 53.991 – – – –
Dias et al. 2014 334.125 54.05 – -2.67 -0.85 –
Kharchenko et al. 2013 333.997 53.995 – -3.17 -1.44 -63.5
Gozha et al. 2012 334.125 54.05 – – – –
Kharchenko et al. 2012 333.997 53.995 – -3.17 -1.44 -63.5
Piskunov et al. 2008 334.117 54.051 – – – –
Kharchenko et al. 2007 334.12 54.05 – 0.16 – -63.5
van den Bergh 2006 334.125 54.05 – – – –
Kharchenko et al. 2005 334.12 54.05 – -1.77 -2.13 –
Kharchenko et al. 2003 334.12 54.05 – -2.05 -1.38 –
Dias et al. 2002 334.125 54.05 – -2.67 -0.85 -63.5

💡 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
Almeida et al. 2025 2.71 1.52 – 46 – 649 – –
Celli et al. 2024 – – – 20 – 1019 – –
Almeida et al. 2023 2.81 1.55 – 29 -0.082 1473* 0.55 –
Just et al. 2023 – – – 40 – 288 – –
Dias et al. 2021 2.71 1.52 – 46 -0.100 – – –
Cantat-Gaudin et al. 2020 3.39 1.17 – 19 – – – –
Loktin & Popova 2017 2.35 1.68 – 10 – – – –
Kharchenko et al. 2016 1.75 1.55 – 40 – – – –
Kharchenko et al. 2013 1.75 1.55 – 40 – – – –
Gozha et al. 2012 2.35 – – 10 – 3631 – –
Kharchenko et al. 2012 1.75 1.55 – 40 – – – –
Piskunov et al. 2008 2.35 1.67 – 51 – – – –
van den Bergh 2006 2.35 1.67 – 10 – – – –
Kharchenko et al. 2005 2.35 1.67 – 51 – – – –
Kharchenko et al. 2003 2.35 1.67 – – – – – –
Dias et al. 2002 2.35 1.68 – 10 – – – –

(*): Indicates that this parameter is assigned more than one value in the corresponding reference.

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 164 100.0 333.99 54.0 0.27 -3.33 -3.33 -68.79 0.22
Steine 10 27.8 334.15 54.0 0.27 -3.32 -3.32 – 0.09

💡 Note: The % column shows the percentage of members that IC 1442 shares with each listed object.

Visualization
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IC 1442 UCC
IC 1442 CANTAT20
Galactocentric position diagram