Melotte 212

(Collinder 389; NGC 6694; MWSC 2987; M 26; OCL 67; FSR 0071; FoF 69)

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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) 332
Stellar density (N50/rad) 71.6 [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
πŸ“₯ Members πŸ“Š Colab πŸ”¬ Bayestar19 MOCAMOCA πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
Melotte 212 is a rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, below 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.

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Melotte 212 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 281.317 -9.39 0.513 0.148 -1.44 -7.012
Li et al. 2025 281.317 -9.386 0.524 0.144 -1.411 –
Wei et al. 2025 281.329 -9.39 0.518 0.165 -1.389 –
Almeida et al. 2025 281.317 -9.385 – – – –
Hunt & Reffert 2024 281.319 -9.386 0.507 0.143 -1.425 -2.875
Cavallo et al. 2024 281.315 -9.387 0.508 – – –
Hunt & Reffert 2023 281.319 -9.386 0.507 0.143 -1.425 -2.875
Almeida et al. 2023 281.317 -9.379 – – – –
Just et al. 2023 281.31 -9.382 – – – –
Jaehnig et al. 2021 281.32 -9.388 0.552 0.153 -1.416 –
Rain et al. 2021 281.317 -9.386 0.524 0.144 -1.411 –
Dias et al. 2021 281.317 -9.385 0.528 0.142 -1.406 -10.226
Cantat-Gaudin et al. 2020 281.317 -9.386 0.524 0.144 -1.411 –
SΓ‘nchez et al. 2020 281.325 -9.383 – 0.15 -1.539 –
Cantat-Gaudin & Anders 2020 281.317 -9.386 0.524 0.144 -1.411 –
Liu & Pang 2019 281.315 -9.388 0.528 0.158 -1.397 –
Soubiran et al. 2018 281.317 -9.386 – – – -10.54
Bica et al. 2019 281.318 -9.389 – – – –
Cantat-Gaudin et al. 2018 281.317 -9.386 0.524 0.144 -1.411 –
Loktin & Popova 2017 281.325 -9.384 – -0.641 -6.612 4.0
Kharchenko et al. 2016 281.31 -9.382 – – – –
Dias et al. 2014 281.325 -9.383 – -1.25 -1.54 –
Kharchenko et al. 2013 281.317 -9.38 – -2.29 -3.24 4.0
Gozha et al. 2012 281.325 -9.383 – – – –
Piskunov et al. 2008 281.322 -9.38 – – – –
Kharchenko et al. 2007 281.32 -9.38 – 0.12 – 4.0
van den Bergh 2006 281.325 -9.383 – – – –
Kharchenko et al. 2005 281.32 -9.38 – -2.02 -3.13 4.0
Kharchenko et al. 2003 281.31 -9.4 – -2.14 -3.06 –
Chen et al. 2003 281.323 -9.358 – -1.73 -0.91 -9.2
Dias et al. 2002 281.325 -9.383 – -1.73 -0.91 -9.1
Dambis 1999 281.325 -9.383 – – – –

πŸ’‘ 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– 1.67 1.82 1.41 132 0.155 959 0.455 0.0
Li et al. 2025 1.42 1.75 – 210 -0.150 – – –
Wei et al. 2025 2.13 1.59 – 100 0.250 1570 0.41 –
Almeida et al. 2025 1.66 1.87 – 101 – 710 – –
Hunt & Reffert 2024 – – – – – 2641(1) – –
Cavallo et al. 2024 1.85 2.04 – 102 0.250 – – –
Hunt & Reffert 2023 1.82 1.77 1.41 135 – – – –
Almeida et al. 2023 1.68 1.89 – 100 0.173 1208(1) 0.50 –
Just et al. 2023 – – – 132 – 418 – –
Jaehnig et al. 2021 1.80(1) – – – – – – –
Rain et al. 2021 1.81 1.58 – 182 – – – 0
Dias et al. 2021 1.66 1.87 – 101 0.155 – – –
Cantat-Gaudin et al. 2020 1.92 1.63 – 141 – – – –
Cantat-Gaudin & Anders 2020 1.81 – – – – – – –
Liu & Pang 2019 – – – 204 -0.250 – – –
Soubiran et al. 2018 1.81 – – – – – – –
Cantat-Gaudin et al. 2018 1.81 – – – – – – –
Loktin & Popova 2017 1.59 1.83 – 84 – – – –
Kharchenko et al. 2016 1.75 1.81 – 132 – – – –
Kharchenko et al. 2013 1.75 1.81 – 132 – – – –
Gozha et al. 2012 1.60 – – 85 – 229 – –
Piskunov et al. 2008 1.58 1.86 – 200 – – – –
van den Bergh 2006 1.60 1.83 – 85 – – – –
Kharchenko et al. 2005 1.58 1.86 – 200 – – – –
Kharchenko et al. 2003 1.60 1.71 – – – – – –
Chen et al. 2003 1.60 – – 80 – – – –
Dias et al. 2002 1.66 1.58 – 182 -0.090 – – –
Dambis 1999 1.32 1.86 – 79 – – – –

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

Visualization
ℹ️
Melotte 212 UCC
Melotte 212 HUNT23
Melotte 212 CANTAT20
Galactocentric position diagram