NGC 381

(MWSC 105; FoF 2128)

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0.92 UTI
0.84
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 334
Radius (P>50% members) 7.7 [arcmin]
  • CN 0.84 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 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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NGC 381 is a rich, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age 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.
Relatively close Moderate extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for NGC 381 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 – 17.095 61.585 0.852 1.588 -2.301 -24.323
Li et al. 2025 17.094 61.586 0.847 1.602 -2.263 –
Hu & Soubiran 2025 17.099 61.588 – – – –
Wei et al. 2025 17.074 61.599 0.851 1.606 -2.342 –
Almeida et al. 2025 17.089 61.594 – – – –
Zhang et al. 2024 17.104 61.584 – – – –
Hunt & Reffert 2024 17.104 61.584 0.856 1.6 -2.318 -21.94
Cavallo et al. 2024 17.099 61.588 0.853 – – –
Hunt & Reffert 2023 17.104 61.584 0.856 1.6 -2.318 -21.94
Almeida et al. 2023 17.098 61.6 – – – –
Just et al. 2023 17.097 61.576 – – – –
He et al. 2022 17.09 61.586 0.855 1.599 -2.33 –
Tarricq et al. 2022 17.109 61.578 0.859 1.6 -2.347 –
Jaehnig et al. 2021 17.101 61.586 0.878 1.609 -2.261 –
Rain et al. 2021 17.094 61.586 0.847 1.602 -2.263 –
Dias et al. 2021 17.089 61.594 0.845 1.6 -2.257 –
Cantat-Gaudin et al. 2020 17.094 61.586 0.847 1.602 -2.263 –
Cantat-Gaudin & Anders 2020 17.094 61.586 0.847 1.602 -2.263 –
Liu & Pang 2019 17.085 61.597 0.854 1.599 -2.254 –
Bossini et al. 2019 17.094 61.586 – – – –
Cantat-Gaudin et al. 2018 17.094 61.586 0.847 1.602 -2.263 –
Loktin & Popova 2017 17.085 61.583 – -1.213 -1.246 -22.0
Kharchenko et al. 2016 17.097 61.576 – – – –
Dias et al. 2014 17.079 61.583 – -0.22 0.11 –
Kharchenko et al. 2013 17.107 61.579 – 0.22 -2.07 -22.0
Gozha et al. 2012 17.079 61.584 – – – –
Kharchenko et al. 2012 17.107 61.579 – 0.22 -2.07 -22.0
Piskunov et al. 2008 17.083 61.596 – – – –
Kharchenko et al. 2007 17.08 61.58 – 0.1 – -22.0
van den Bergh 2006 17.083 61.584 – – – –
Kharchenko et al. 2005 17.08 61.6 – 0.81 -1.51 -22.0
Kharchenko et al. 2003 17.07 61.58 – -0.16 -0.39 –
Chen et al. 2003 17.061 61.587 – – – –
Dias et al. 2002 17.079 61.583 – -0.22 0.11 -29.76

💡 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
Li et al. 2025 1.07 1.13 – 591 -0.027 – – –
Hu & Soubiran 2025 – – – – -0.090* – – –
Wei et al. 2025 2.63 1.56 – 501 0.500 655 0.39 –
Almeida et al. 2025 1.10 1.38 – 427 – 455 – –
Zhang et al. 2024 – – – – -0.134* – – –
Hunt & Reffert 2024 – – – – – 808* – –
Cavallo et al. 2024 1.17 1.19 – 562 0.360 – – –
Hunt & Reffert 2023 1.11 1.23 0.80 237 – – – –
Almeida et al. 2023 1.12 1.44 – 353 -0.011 369* 0.51 –
Just et al. 2023 – – – 708 – 82 – –
He et al. 2022 – 1.50 – 251 – – – –
Tarricq et al. 2022 1.14 – – 427 – – – –
Jaehnig et al. 2021 1.14* – – – – – – –
Rain et al. 2021 1.14 1.24 – 316 – – – 0
Dias et al. 2021 1.10 1.38 – 427 0.105 – – –
Cantat-Gaudin et al. 2020 1.17 0.93 – 380 – – – –
Cantat-Gaudin & Anders 2020 1.14 – – – – – – –
Liu & Pang 2019 – – – 363 0.250 – – –
Bossini et al. 2019 1.27 1.04 – 500 0.070 – – –
Cantat-Gaudin et al. 2018 1.14 – – – – – – –
Loktin & Popova 2017 1.09 1.05 – 362 – – – –
Kharchenko et al. 2016 1.20 1.05 – 708 – – – –
Kharchenko et al. 2013 1.20 1.05 – 708 0.070 – – –
Gozha et al. 2012 1.15 – – 320 0.020 33 – –
Kharchenko et al. 2012 1.20 1.05 – 708 0.070 – – –
Piskunov et al. 2008 1.06 1.05 – 589 – – – –
van den Bergh 2006 1.15 1.24 – 316 – – – –
Kharchenko et al. 2005 1.06 1.05 – 589 – – – –
Kharchenko et al. 2003 1.05 1.05 – – – – – –
Chen et al. 2003 1.15 1.24 – 320 0.070* – – –
Dias et al. 2002 1.15 1.24 – 320 0.070 – – –

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

Visualization
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NGC 381 UCC
NGC 381 HUNT23
NGC 381 CANTAT20
Galactocentric position diagram