NGC 2225

(MWSC 868; FSR 1135; FoF 11)

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0.95 UTI
0.76
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 130
Radius (P>50% members) 2.5 [arcmin]
  • CN 0.76 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 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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NGC 2225 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, well below the mid-plane, affected by moderate extinction. It is catalogued as a 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.
Distant Moderate extinction Near-solar metallicity Old

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for NGC 2225 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 – 96.651 -9.644 0.281 -0.282 0.5 39.029
Li et al. 2025 96.652 -9.643 0.29 -0.28 0.501 –
Hu & Soubiran 2025 96.651 -9.645 – – – –
Almeida et al. 2025 96.646 -9.644 – – – –
Hunt & Reffert 2024 96.654 -9.642 0.285 -0.294 0.507 41.633
Cavallo et al. 2024 96.651 -9.645 0.286 – – –
Hunt & Reffert 2023 96.654 -9.642 0.285 -0.294 0.507 41.633
Almeida et al. 2023 96.648 -9.639 – – – –
Just et al. 2023 96.65 -9.639 – – – –
Dias et al. 2021 96.646 -9.644 0.287 -0.257 0.491 –
Cantat-Gaudin et al. 2020 96.652 -9.643 0.29 -0.28 0.501 –
Cantat-Gaudin & Anders 2020 96.652 -9.643 0.29 -0.28 0.501 –
Liu & Pang 2019 96.644 -9.637 0.276 -0.273 0.553 –
Soubiran et al. 2018 96.652 -9.643 – – – 41.66
Bica et al. 2019 96.66 -9.634 – – – –
Cantat-Gaudin et al. 2018 96.652 -9.643 0.29 -0.28 0.501 –
Loktin & Popova 2017 96.645 -9.637 – 1.31 -1.97 –
Kharchenko et al. 2016 96.65 -9.639 – – – –
Dias et al. 2014 96.65 -9.638 – -3.31 -3.87 –
Kharchenko et al. 2013 96.655 -9.64 – 1.31 -1.97 –
Gozha et al. 2012 96.65 -9.638 – – – –
Dias et al. 2002 96.65 -9.638 – 1.31 -1.97 –

💡 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 2.92 1.50 – 1171 -0.067 – – –
Hu & Soubiran 2025 – – – – -0.170* – – –
Almeida et al. 2025 2.72 1.40 – 1365 – 316 – –
Hunt & Reffert 2024 – – – – – 1113* – –
Cavallo et al. 2024 2.70 1.19 – 1514 0.320 – – –
Hunt & Reffert 2023 3.10 1.33 0.92 1459 – – – –
Almeida et al. 2023 2.89 1.63 – 1245 -0.199 470* 0.77 –
Just et al. 2023 – – – 1462 – 1099 – –
Dias et al. 2021 2.72 1.40 – 1365 0.012 – – –
Cantat-Gaudin et al. 2020 3.39 0.96 – 1380 – – – –
Cantat-Gaudin & Anders 2020 3.14 – – – – – – –
Liu & Pang 2019 – – – 2040 -0.500 – – –
Soubiran et al. 2018 3.14 – – – – – – –
Cantat-Gaudin et al. 2018 3.14 – – – – – – –
Loktin & Popova 2017 4.46 1.57 – 1047 – – – –
Kharchenko et al. 2016 3.20 1.10 – 1462 – – – –
Kharchenko et al. 2013 3.20 1.10 – 1462 -0.400 – – –
Gozha et al. 2012 3.20 – – 1288 -0.400 – – –
Dias et al. 2002 3.20 1.08 – 1288 -0.380 – – –

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

Visualization
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NGC 2225 UCC
NGC 2225 HUNT23
NGC 2225 CANTAT20
Galactocentric position diagram