Ruprecht 43

(MWSC 1401; OCL 684; ESO 430 06; Turner-Majaess 1)

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0.67 UTI
0.58
CN
0.5
Cdens
0.75
CC3
0.75
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 66
Radius (P>50% members) 2.8 [arcmin]
  • CN 0.58 Moderately populated
  • Cdens 0.5 Moderately dense
  • CC3 0.75 High quality
  • Clit 0.75 Well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Ruprecht 43 is a moderately populated, moderately dense object of high C3 quality. Its parallax locates it at a large* distance, above the mid-plane, affected by low extinction. It is catalogued as a low-mass, near-solar metallicity, intermediate-age cluster (see Parameters). It is well-studied in the literature.

(*): The parallax distance estimate (~6.34 kpc) differs significantly from the median photometric distance (~1.30 kpc).

Relatively close Low extinction Low mass Near-solar metallicity Intermediate age

Data
🔍 Search references for Ruprecht 43 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 – 119.682 -28.816 0.158 -2.199 3.048 114.157
Li et al. 2025 119.697 -28.805 0.105 -2.23 3.041 –
Just et al. 2023 119.814 -28.867 – – – –
Cantat-Gaudin et al. 2020 119.697 -28.805 0.105 -2.23 3.041 –
Cantat-Gaudin & Anders 2020 119.697 -28.805 0.105 -2.23 3.041 –
Soubiran et al. 2018 119.697 -28.805 – – – 103.56
Bica et al. 2019 119.818 -28.966 – – – –
Cantat-Gaudin et al. 2018 119.697 -28.805 0.105 -2.23 3.041 –
Kharchenko et al. 2016 119.814 -28.867 – – – –
Dias et al. 2014 119.692 -28.811 – -1.82 0.4 113.37
Kharchenko et al. 2013 119.82 -28.87 – -1.03 1.18 113.4
Piskunov et al. 2008 119.811 -28.899 – – – –
Kharchenko et al. 2005 119.82 -28.9 – -3.57 -0.08 –
Kharchenko et al. 2003 119.67 -28.87 – -4.63 -1.9 –

💡 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 5.11 1.32 – 612 0.060 – – –
Just et al. 2023 – – – 251 – 48 – –
Cantat-Gaudin & Anders 2020 7.46 – – – – – – –
Soubiran et al. 2018 7.46 – – – – – – –
Cantat-Gaudin et al. 2018 7.46 – – – – – – –
Kharchenko et al. 2016 0.97 0.64 – 251 – – – –
Kharchenko et al. 2013 0.97 0.64 – 251 – – – –
Piskunov et al. 2008 1.30 0.84 – 295 – – – –
Kharchenko et al. 2005 1.30 0.84 – 295 – – – –
Kharchenko et al. 2003 1.00 0.16 – – – – – –

Visualization
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Ruprecht 43 UCC
Ruprecht 43 CANTAT20
Galactocentric position diagram