ESO 430 18

(MWSC 1431)

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0.45 UTI
0.25
CN
0.22
Cdens
0.5
CC3
0.65
Clit
1.0
Cdup
C3 classification BB
Number of members (P>50%) 25
Radius (P>50% members) 4.0 [arcmin]
  • CN 0.25 Poorly populated
  • Cdens 0.22 Very loose
  • CC3 0.5 Intermediate quality
  • Clit 0.65 Moderately 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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ESO 430 18 is a poorly populated, very loose object of intermediate C3 quality. Its parallax locates it at a moderate* distance, above the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~4.14 kpc) differs significantly from the median photometric distance (~0.87 kpc).

Note: This object shares a large percentage of members with a later reported entry. See table with shared members information.

Close Low extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for ESO 430 18 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 – 121.791 -30.878 0.241 -2.595 3.231 50.361
Hunt & Reffert 2024 121.726 -30.876 0.227 -2.599 3.25 –
Cavallo et al. 2024 121.799 -30.874 0.233 – – –
Hunt & Reffert 2023 121.726 -30.876 0.227 -2.599 3.25 –
Just et al. 2023 121.757 -30.832 – – – –
Bica et al. 2019 121.718 -30.837 – – – –
Kharchenko et al. 2016 121.757 -30.832 – – – –
Dias et al. 2014 121.717 -30.837 – -2.56 0.86 –
Kharchenko et al. 2013 121.762 -30.835 – -6.25 -0.54 –
Piskunov et al. 2008 121.701 -30.834 – – – –
Piskunov et al. 2007 121.701 -30.834 – – – –
Kharchenko et al. 2005 121.71 -30.84 – -7.91 -0.81 –

💡 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 – – – – – 132* – –
Cavallo et al. 2024 3.39 1.09 – 100 -0.330 – – –
Hunt & Reffert 2023 4.13 0.66 2.08 85 – – – –
Just et al. 2023 – – – 750 – 81 – –
Kharchenko et al. 2016 0.87 0.00 – 750 – – – –
Kharchenko et al. 2013 0.87 0.00 – 750 – – – –
Piskunov et al. 2008 0.83 0.00 – 1122 – 23* – –
Piskunov et al. 2007 0.83 0.00 – 1122 – 5 – –
Kharchenko et al. 2005 0.83 0.00 – 1122 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
UBC 470 76.0 121.79 -30.89 0.24 -2.62 3.22 – 0.1

💡 Note: The % column shows the percentage of members that ESO 430 18 shares with each listed object.

Visualization
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ESO 430 18 UCC
ESO 430 18 HUNT23
Galactocentric position diagram