Ruprecht 47

(MWSC 1419; OCL 699; ESO 430 08; FSR 1344)

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0.90 UTI
0.76
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 121
Radius (P>50% members) 3.0 [arcmin]
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Ruprecht 47 is a rich, very dense object of high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.
Distant Low extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Ruprecht 47 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 120.568 -31.075 0.256 -2.446 2.727 92.011
Li et al. 2025 120.57 -31.074 0.234 -2.5 2.727 –
Almeida et al. 2025 120.565 -31.071 – – – –
Hunt & Reffert 2024 120.57 -31.073 0.26 -2.44 2.723 89.241
Celli et al. 2024 120.57 -31.074 – – – –
Cavallo et al. 2024 120.564 -31.083 0.261 – – –
Hunt & Reffert 2023 120.57 -31.073 0.26 -2.44 2.723 89.241
Just et al. 2023 120.58 -31.067 – – – –
Dias et al. 2021 120.565 -31.071 0.241 -2.507 2.73 –
Cantat-Gaudin et al. 2020 120.57 -31.074 0.234 -2.5 2.727 –
Cantat-Gaudin & Anders 2020 120.57 -31.074 0.234 -2.5 2.727 –
Soubiran et al. 2018 120.57 -31.074 – – – 74.2
Bica et al. 2019 120.576 -31.066 – – – –
Cantat-Gaudin et al. 2018 120.57 -31.074 0.234 -2.5 2.727 –
Kharchenko et al. 2016 120.58 -31.067 – – – –
Dias et al. 2014 120.579 -31.067 – -1.68 -0.45 –
Kharchenko et al. 2013 120.585 -31.07 – 0.14 0.56 59.7
Gozha et al. 2012 120.579 -31.067 – – – –
Piskunov et al. 2008 120.576 -31.066 – – – –
Kharchenko et al. 2007 120.58 -31.07 – 0.15 – 59.7
van den Bergh 2006 120.575 -31.078 – – – –
Kharchenko et al. 2005 120.58 -31.07 – -0.74 -0.04 59.7
Kharchenko et al. 2003 120.57 -31.07 – -0.99 -0.27 –
Dias et al. 2002 120.579 -31.067 – -1.68 -0.45 59.7

💡 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 3.54 0.98 – 117 -0.037 – – –
Almeida et al. 2025 3.43 1.09 – 139 – 386 – –
Hunt & Reffert 2024 – – – – – 564* – –
Celli et al. 2024 – – – 30 – 335 – –
Cavallo et al. 2024 3.75 0.84 – 209 0.480 – – –
Hunt & Reffert 2023 3.59 0.44 0.38 245 – – – –
Just et al. 2023 – – – 151 – 1963 – –
Dias et al. 2021 3.43 1.09 – 139 -0.123 – – –
Cantat-Gaudin et al. 2020 3.72 0.93 – 30 – – – –
Cantat-Gaudin & Anders 2020 3.80 – – – – – – –
Soubiran et al. 2018 3.80 – – – – – – –
Cantat-Gaudin et al. 2018 3.80 – – – – – – –
Kharchenko et al. 2016 2.89 0.90 – 151 – – – –
Kharchenko et al. 2013 2.89 0.90 – 151 – – – –
Gozha et al. 2012 3.01 – – 78 – 1995 – –
Piskunov et al. 2008 3.01 0.78 – 117 – – – –
van den Bergh 2006 3.01 0.87 – 78 – – – –
Kharchenko et al. 2005 3.01 0.78 – 117 – – – –
Kharchenko et al. 2003 3.01 0.87 – – – – – –
Dias et al. 2002 3.01 0.87 – 78 – – – –

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

Visualization
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Ruprecht 47 UCC
Ruprecht 47 HUNT23
Ruprecht 47 CANTAT20
Galactocentric position diagram