Platais 12

(MWSC 2173; HIP 67440 Group)

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0.86 UTI
0.81
CN
1.0
Cdens
0.75
CC3
0.86
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 257
Radius (P>50% members) 36.5 [arcmin]
  • CN 0.81 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.86 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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Platais 12 is a rich, very dense object of high C3 quality. Its parallax locates it at a very close distance, near the mid-plane, affected by low extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster (see Parameters). It is well-studied in the literature.

Note: This object shares a significant percentage of members with 2 later reported entries. See table with shared members information.

Very close Low extinction Massive Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Platais 12 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 – 208.015 -63.535 2.221 -8.347 -5.437 -11.95
Hunt & Reffert 2024 207.919 -63.454 2.219 -8.31 -5.409 -12.249
Cavallo et al. 2024 207.421 -63.578 2.224 – – –
Hunt & Reffert 2023 207.919 -63.454 2.219 -8.31 -5.409 -12.249
Just et al. 2023 208.135 -63.402 – – – –
He et al. 2022 207.406 -63.7 2.236 -8.435 -5.365 –
Bica et al. 2019 207.912 -63.45 – – – –
Loktin & Popova 2017 207.93 -63.453 – -8.29 -5.04 -12.0
Kharchenko et al. 2016 208.135 -63.402 – – – –
Dias et al. 2014 207.933 -63.453 – -5.5 -5.67 –
Kharchenko et al. 2013 208.147 -63.405 – -8.05 -4.62 -12.0
Gozha et al. 2012 207.933 -63.453 – – – –
Piskunov et al. 2008 208.12 -63.366 – – – –
Kharchenko et al. 2007 207.93 -63.45 – 1.25 – -11.99
Piskunov et al. 2007 208.12 -63.366 – – – –
van den Bergh 2006 207.933 -63.453 – – – –
Kharchenko et al. 2005 208.12 -63.37 – -8.05 -4.62 -11.99

💡 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
Hunt & Reffert 2024 – – – – – 213* – –
Cavallo et al. 2024 0.45 0.71 – 87 0.140 – – –
Hunt & Reffert 2023 0.43 0.23 0.68 147 – – – –
Just et al. 2023 – – – 251 – 62 – –
He et al. 2022 – 0.55 – 79 – – – –
Loktin & Popova 2017 0.42 0.31 – 170 – – – –
Kharchenko et al. 2016 0.49 0.42 – 251 – – – –
Kharchenko et al. 2013 0.49 0.42 – 251 0.027 – – –
Gozha et al. 2012 0.40 – – 170 – 3236 – –
Piskunov et al. 2008 0.43 0.31 – 170 – 4667* – –
Piskunov et al. 2007 0.43 0.31 – 170 – 2399 – –
van den Bergh 2006 0.40 – – 200 – – – –
Kharchenko et al. 2005 0.43 0.31 – 170 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OCSN 90 73.2 207.81 -63.57 2.24 -8.39 -5.43 -11.95 0.02
CWWDL 14613 35.0 207.78 -63.51 2.24 -8.38 -5.46 -11.95 0.0

💡 Note: The % column shows the percentage of members that Platais 12 shares with each listed object.

Visualization
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Platais 12 UCC
Platais 12 HUNT23
Galactocentric position diagram