NGC 2141

(Collinder 79; MWSC 710; OCL 487; FSR 0971; FoF 28)

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1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
Nm (P>50%) 1357
Core radius and density 2.9 [pc], 12 [pc-2]
C3 classification AA
  • CN 1.0 Very rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
NGC 2141 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by low extinction. It is catalogued as a very massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the metallicity and mass parameters (see Parameters). It is very well-studied in the literature.

Note: This object contains blue stragglers according to at least one source.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Rain et al. (2024)
The cluster contains many BSS candidates, some possibly misidentified near the turnoff. The majority, however, are well reproduced by binary evolution models, including the single YSS.

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.0707, e_all=0.0594.

Rain et al. (2021)
The red limit of the yellow straggler area is BP-RP=1.45. There are several stragglers candidates with a radius larger than the apparent radius of the cluster (r=10 arcmin (Dias et al., 2002A&A...389..871D, Cat. B/ocl). This object probably suffers from differential reddening. We suggest exploring this effect in future works.

Data
🔍 Search references for NGC 2141 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– 90.739 10.456 0.204 -0.074 -0.757 25.128
Li et al. 2025 90.734 10.451 0.196 -0.028 -0.767 –
Hu & Soubiran 2025 90.738 10.454 – – – –
Carrasco-Varela et al. 2025 90.965 10.422 – – – –
Almeida et al. 2025 90.731 10.444 – – – –
Zhang et al. 2024 90.744 10.456 – – – –
Hunt & Reffert 2024 90.744 10.456 0.203 -0.083 -0.755 26.135
Cavallo et al. 2024 90.738 10.454 0.204 – – –
Rain et al. 2024 90.741 10.455 0.21 -0.076 -0.755 –
Hunt & Reffert 2023 90.744 10.456 0.203 -0.083 -0.755 26.135
Angelo et al. 2023 90.725 10.452 – -0.09 -0.75 –
Just et al. 2023 90.719 10.461 – – – –
Jadhav & Subramaniam 2021 90.734 10.451 – – – –
Jaehnig et al. 2021 90.74 10.457 0.215 -0.049 -0.764 –
Rain et al. 2021 90.734 10.451 0.196 -0.028 -0.767 –
Dias et al. 2021 90.731 10.444 0.198 -0.031 -0.773 39.714
Cantat-Gaudin et al. 2020 90.734 10.451 0.196 -0.028 -0.767 –
Zhong et al. 2020 90.734 10.451 – -0.028 -0.767 21.368
Cantat-Gaudin & Anders 2020 90.734 10.451 0.196 -0.028 -0.767 –
Liu & Pang 2019 90.739 10.45 0.282 -0.015 -0.697 –
Soubiran et al. 2018 90.734 10.451 – – – 26.96
Bica et al. 2019 90.751 10.429 – – – –
Cantat-Gaudin et al. 2018 90.734 10.451 0.196 -0.028 -0.767 –
Dias et al. 2018 – – – 0.1 -1.69 –
Loktin & Popova 2017 90.735 10.448 – 0.105 -0.535 43.2
Sampedro et al. 2017 90.729 10.447 – 0.34 -4.96 –
Kharchenko et al. 2016 90.719 10.461 – – – –
Netopil et al. 2016 90.729 10.447 – – – –
Dias et al. 2014 90.729 10.447 – 0.03 -4.82 –
Kharchenko et al. 2013 90.727 10.46 – -0.85 -0.78 43.2
Gozha et al. 2012 90.729 10.447 – – – –
Bukowiecki et al. 2011 90.742 10.455 – – – –
Kharchenko et al. 2007 90.73 10.45 – 0.08 – –
Ahumada & Lapasset 2007 90.725 10.45 – – – –
van den Bergh 2006 90.775 10.433 – – – –
Chen et al. 2003 90.756 10.41 – 1.38 -1.78 43.0
Dias et al. 2002 90.729 10.447 – 0.03 -4.82 24.1
Lynga 1987 90.76 10.434 – – – –
Sulentic et al. 1973 90.771 10.432 – – – –

💡 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– 4.23 0.965 0.33 1862 -0.163 8024 0.36 20
Li et al. 2025 4.30 1.34 – 2353 -0.447 – – –
Hu & Soubiran 2025 – – – – -0.230(5) – – –
Carrasco-Varela et al. 2025 4.21 0.99 – 2291 0.270 – – 23(1)
Almeida et al. 2025 4.21 0.83 – 2897 – 5627 – –
Zhang et al. 2024 – – – – 0.062(1) – – –
Hunt & Reffert 2024 4.23 0.95 0.33 1832 – 10420(1) – –
Cavallo et al. 2024 3.39 1.06 – 3020 0.010 – – –
Rain et al. 2024 4.08 1.11 – 2614 – 26251 0.36 –
Hunt & Reffert 2023 4.23 0.95 0.33 1832 – – – –
Angelo et al. 2023 3.89 0.91 – 2512 0.220 20(1) – –
Just et al. 2023 – – – 1758 – 2173 – –
Spina et al. 2022 – – – – -0.084 – – –
Jadhav & Subramaniam 2021 5.18 0.97 – 1862 – 15302 – 17(1)
Jaehnig et al. 2021 4.57(1) – – – – – – –
Rain et al. 2021 4.44 0.79 – 1698 – – – 18
Dias et al. 2021 4.21 0.83 – 2897 0.300 – – –
Cantat-Gaudin et al. 2020 5.18 0.97 – 1862 – – – –
Kounkel et al. 2020 4.07 1.08 – 1288 – – – –
Zhong et al. 2020 4.44(1) 0.98 – 9245 -0.163 – – –
Cantat-Gaudin & Anders 2020 4.44 – – – – – – –
Liu & Pang 2019 – – – 2630 0.500 – – –
Soubiran et al. 2018 4.44 – – – – – – –
Cantat-Gaudin et al. 2018 4.44 – – – – – – –
Loktin & Popova 2017 3.61 0.96 – 1265 – – – –
Kharchenko et al. 2016 4.36 0.98 – 1758 – – – –
Netopil et al. 2016 12.05 – – 2190 – – – –
Kharchenko et al. 2013 4.36 0.98 – 1758 -0.180 – – –
Gozha et al. 2012 4.03 – – 1702 -0.180 – – –
Bukowiecki et al. 2011 3.97(1) 1.14 – 1995 – – – –
Ahumada & Lapasset 2007 – 0.79 – 1698 – – – 24
van den Bergh 2006 4.03 0.79 – 1698 – – – –
Chen et al. 2003 4.03 0.79 – 1700 -0.260(1) – – –
Dias et al. 2002 4.03 0.79 – 1702 -0.180 – – –
Lynga 1987 4.40 – – 3981 -0.460 – – –

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

Visualization
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NGC 2141 UCC
NGC 2141 HUNT23
NGC 2141 CANTAT20
Galactocentric position diagram