Melotte 179

(Collinder 349; IC 4665; MWSC 2689; OCL 85; FoF 2432; OCSN 206)

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0.97 UTI
0.84
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 348
Stellar density (N50/rad) 33.1 [N/pc2]
C3 classification AA
  • CN 0.84 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¸
Melotte 179 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very close distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, young cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is very well-studied in the literature.

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Melotte 179 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 266.568 5.576 2.897 -0.851 -8.533 -15.003
Li et al. 2025 266.554 5.615 2.868 -0.909 -8.52 –
Wei et al. 2025 266.518 5.622 2.904 -0.864 -8.532 –
Almeida et al. 2025 266.554 5.58 – – – –
Alfonso et al. 2024 266.597 5.595 2.855 -0.838 -8.521 –
Zhang et al. 2024 266.532 5.635 – – – –
Hunt & Reffert 2024 266.532 5.635 2.867 -0.881 -8.532 -17.295
Cavallo et al. 2024 266.588 5.56 2.877 – – –
Hunt & Reffert 2023 266.532 5.635 2.867 -0.881 -8.532 -17.295
Almeida et al. 2023 266.671 5.502 – – – –
Qin et al. 2023 266.47 5.7 2.88 -0.89 -8.54 -14.74
Just et al. 2023 266.558 5.694 – – – –
He et al. 2022 266.512 5.597 2.9 -0.87 -8.555 –
Jaehnig et al. 2021 266.543 5.658 2.909 -0.942 -8.494 –
Rain et al. 2021 266.554 5.615 2.868 -0.909 -8.52 –
Dias et al. 2021 266.554 5.58 2.86 -0.896 -8.504 -14.142
Cantat-Gaudin et al. 2020 266.554 5.615 2.868 -0.909 -8.52 –
Cantat-Gaudin & Anders 2020 266.554 5.615 2.868 -0.909 -8.52 –
Liu & Pang 2019 266.438 5.681 2.896 -0.905 -8.477 –
Bossini et al. 2019 266.554 5.615 – – – –
Soubiran et al. 2018 266.554 5.615 – – – -14.4
Bica et al. 2019 266.551 5.665 – – – –
Cantat-Gaudin et al. 2018 266.554 5.615 2.868 -0.909 -8.52 –
Loktin & Popova 2017 266.58 5.717 – -0.86 -8.1 -12.2
Kharchenko et al. 2016 266.558 5.694 – – – –
Dias et al. 2014 266.575 5.717 – 1.45 -4.95 –
Kharchenko et al. 2013 266.565 5.695 – -0.6 -8.0 -12.2
Gozha et al. 2012 266.575 5.717 – – – –
Piskunov et al. 2008 266.577 5.716 – – – –
Kharchenko et al. 2007 266.58 5.72 – 1.0 – -10.26
Piskunov et al. 2007 266.577 5.716 – – – –
van den Bergh 2006 266.575 5.717 – – – –
Kharchenko et al. 2005 266.58 5.72 – -0.57 -7.4 -10.26
Kharchenko et al. 2003 266.53 5.66 – -0.3 -6.76 –
Chen et al. 2003 266.55 5.708 – -0.99 -7.77 -13.0
Dias et al. 2002 266.575 5.717 – -0.86 -8.1 -15.95
Dambis 1999 266.575 5.717 – – – –

💡 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– 0.35 0.53 0.98 42 -0.004 255 0.5 0.0
Li et al. 2025 0.35 0.56 – 42 0.057 – – –
Wei et al. 2025 0.43 0.87 – 41 0.000 285 0.21 –
Almeida et al. 2025 0.33 0.71 – 53 – 190 – –
Alfonso et al. 2024 0.35 0.45 – 35 -0.004 – – –
Zhang et al. 2024 – – – – -0.019(1) – – –
Hunt & Reffert 2024 – – – – – 251(1) – –
Cavallo et al. 2024 0.36 0.94 – 22 0.140 – – –
Hunt & Reffert 2023 0.34 0.56 0.98 33 – – – –
Almeida et al. 2023 0.31 0.51 – 204 0.112 308(1) 0.79 –
Qin et al. 2023 0.46 0.71 – 28 – – – –
Just et al. 2023 – – – 43 – 56 – –
He et al. 2022 – 0.90 – 35 – – – –
Jaehnig et al. 2021 0.34(1) – – – – – – –
Rain et al. 2021 0.35 0.37 – 38 – – – 0
Dias et al. 2021 0.33 0.71 – 53 -0.005 – – –
Cantat-Gaudin et al. 2020 0.35 0.45 – 33 – – – –
Cantat-Gaudin & Anders 2020 0.35 – – – – – – –
Liu & Pang 2019 – – – 33 0.250 – – –
Bossini et al. 2019 0.31 0.40 – 38 -0.030 – – –
Soubiran et al. 2018 0.35 – – – – – – –
Cantat-Gaudin et al. 2018 0.35 – – – – – – –
Loktin & Popova 2017 0.35 0.54 – 43 – – – –
Kharchenko et al. 2016 0.35 0.53 – 43 – – – –
Kharchenko et al. 2013 0.35 0.53 – 43 -0.030 – – –
Gozha et al. 2012 0.35 – – 43 -0.030 479 – –
Piskunov et al. 2008 0.35 0.53 – 43 – 259(1) – –
Piskunov et al. 2007 0.35 0.53 – 43 – 140 – –
van den Bergh 2006 0.35 0.53 – 43 – – – –
Kharchenko et al. 2005 0.35 0.53 – 43 – – – –
Kharchenko et al. 2003 0.35 0.53 – – – – – –
Chen et al. 2003 0.35 – – 40 – – – –
Dias et al. 2002 0.35 0.54 – 43 -0.030 – – –
Dambis 1999 0.33 0.60 – 40 – – – –

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

Visualization
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Melotte 179 UCC
Melotte 179 HUNT23
Melotte 179 CANTAT20
Galactocentric position diagram