NGC 1980

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0.82 UTI
0.84
CN
1.0
Cdens
0.62
CC3
1.0
Clit
0.92
Cdup
N50 (P>50% members) 344
Stellar density (N50/rad) 104.8 [N/pc2]
C3 classification AC
  • CN 0.84 Rich
  • Cdens 1.0 Very dense
  • CC3 0.62 Intermediate quality
  • Clit 1.0 Very well-studied
  • Cdup 0.92 Very likely unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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NGC 1980 is a rich, very dense object of intermediate C3 quality. Its parallax locates it at a very close distance, below the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, very young cluster, but with a large variance across recent sources for the absorption and metallicity parameters (see Parameters). It is very well-studied in the literature.

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

Liu et al. (2025)
Classified as primordial binary cluster 202 along with HSC_1633, and of multiple system 57 along with OCSN_59 and HSC_1633.

Palma et al. (2025)
Part of multiple system G124, along with OCSN_59 and HSC_1633.

Cavallo et al. (2024)
Silver sample.

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

Data
🔍 Search references for NGC 1980 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– 83.816 -5.958 2.602 1.239 0.552 20.884
Liu et al. 2025 83.8 -5.92 2.6 1.26 0.47 23.24
Li et al. 2025 83.81 -5.924 2.586 1.215 0.54 –
Almeida et al. 2025 83.792 -5.935 – – – –
Alfonso et al. 2024 83.808 -6.03 2.567 1.23 0.51 –
Zhang et al. 2024 83.801 -5.921 – – – –
Hunt & Reffert 2024 83.801 -5.921 2.6 1.265 0.472 23.24
Celli et al. 2024 83.81 -5.924 – – – –
Cavallo et al. 2024 83.778 -5.96 2.6 – – –
Hunt & Reffert 2023 83.801 -5.921 2.6 1.265 0.472 23.24
He et al. 2022 83.803 -5.785 2.61 1.005 0.462 –
Dias et al. 2021 83.792 -5.935 2.583 1.211 0.569 27.206
Spina et al. 2021 83.799 -5.919 2.585 1.221 0.535 –
Cantat-Gaudin et al. 2020 83.81 -5.924 2.586 1.215 0.54 –
Donor et al. 2020 83.865 -5.915 – 1.26 0.76 26.2
Dias et al. 2019 83.85 -5.915 2.585 1.23 0.529 25.264
Loktin & Popova 2017 83.85 -5.914 – 1.951 -0.524 25.3
Dias et al. 2014 83.85 -5.915 – 0.73 -0.46 –
Gozha et al. 2012 83.85 -5.915 – – – –
Piskunov et al. 2008 83.838 -5.907 – – – –
Kharchenko et al. 2007 83.85 -5.91 – 0.21 – 25.34
Piskunov et al. 2007 83.838 -5.907 – – – –
Kharchenko et al. 2005 83.85 -5.91 – 0.83 -0.36 25.34
Kharchenko et al. 2003 83.8 -5.91 – 0.46 -1.01 –
Dias et al. 2002 83.85 -5.915 – 0.73 -0.46 28.54

💡 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] Bfrac BSS
UCC 99999– 0.4 0.16 1.91 8 -0.115 82 – –
Liu et al. 2025 0.40 0.04 – 7 – – – –
Li et al. 2025 0.33 0.10 – 10 -0.150 – – –
Almeida et al. 2025 0.32 0.13 – 9 – 140 – –
Alfonso et al. 2024 0.35 0.69 – 10 -0.238 – – –
Zhang et al. 2024 – – – – 0.006(1) – – –
Hunt & Reffert 2024 – – – – – 245(1) – –
Celli et al. 2024 – – – 13 – 130 – –
Cavallo et al. 2024 0.40 1.00 – 10 0.060 – – –
Hunt & Reffert 2023 0.37 0.51 1.91 7 – – – –
He et al. 2022 – 0.05 – 6 – – – –
Dias et al. 2021 0.32 0.13 – 9 -0.242 – – –
Spina et al. 2021 0.39 – – 13 -0.075(20) – – –
Cantat-Gaudin et al. 2020 0.38 0.70 – 13 – – – –
Donor et al. 2020 – – – – -0.080 – – –
Dias et al. 2019 0.30 0.09 – 9 -0.930 – – –
Loktin & Popova 2017 0.48 0.65 – 7 – – – –
Gozha et al. 2012 0.50 – – 5 – 34 – –
Piskunov et al. 2008 0.55 0.16 – 5 – 26(1) – –
Piskunov et al. 2007 0.55 0.16 – 5 – 6 – –
Kharchenko et al. 2005 0.55 0.16 – 5 – – – –
Kharchenko et al. 2003 0.50 – – – – – – –
Dias et al. 2002 0.55 0.16 – 5 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 208 99.7 83.81 -5.95 2.6 1.24 0.54 23.25 0.06
OCSN 226 91.6 83.82 -5.96 2.61 1.26 0.55 23.02 0.02
OC 0347 30.8 83.99 -6.36 2.6 1.01 0.32 24.19 0.31
NGC 1976 8.4 83.82 -5.45 2.58 1.25 0.19 19.86 0.79
OCSN 244 7.0 83.82 -5.43 2.52 1.39 0.33 25.62 0.25
OCSN 225 5.8 83.84 -4.96 2.55 1.25 -0.08 22.73 0.36
OC 0345 4.4 83.77 -5.87 2.58 1.06 0.21 19.86 0.03
Morgan 8 1.2 84.13 -6.42 2.55 0.85 0.3 16.82 0.32

💡 Note: The % column shows the percentage of members that NGC 1980 shares with each listed object.

Visualization
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NGC 1980 UCC
NGC 1980 HUNT23
NGC 1980 CANTAT20
Galactocentric position diagram