Ruprecht 147

(NGC 6774; MWSC 3078; OCL 65; FoF 2390; OCSN 261)

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0.96 UTI
0.81
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 273
Stellar density (N50/rad) 19.3 [N/pc2]
C3 classification AA
  • CN 0.81 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Ruprecht 147 is a rich, very dense object of very 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 near-solar metallicity, old cluster, but with a large variance across recent sources for the absorption and age parameters (see Parameters). It is very well-studied in the literature.

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

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Ruprecht 147 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 289.077 -16.312 3.264 -0.932 -26.591 41.751
Li et al. 2025 289.087 -16.333 3.25 -0.939 -26.576 –
Hu & Soubiran 2025 289.075 -16.359 – – – –
Almeida et al. 2025 289.053 -16.331 – – – –
Alfonso et al. 2024 289.057 -16.337 3.237 -0.922 -26.707 –
Hunt & Reffert 2024 289.141 -16.269 3.275 -0.949 -26.672 43.448
Cavallo et al. 2024 289.075 -16.359 3.276 – – –
Hunt & Reffert 2023 289.141 -16.269 3.275 -0.949 -26.672 43.448
Qin et al. 2023 289.07 -16.42 3.27 -0.91 -26.7 41.77
Just et al. 2023 289.084 -16.252 – – – –
Tarricq et al. 2022 289.082 -16.31 3.27 -0.87 -26.602 –
Dias et al. 2021 289.053 -16.331 3.259 -0.97 -26.63 41.993
Cantat-Gaudin et al. 2020 289.087 -16.333 3.25 -0.939 -26.576 –
Donor et al. 2020 289.092 -16.25 – -0.87 -26.72 42.4
Cantat-Gaudin & Anders 2020 289.087 -16.333 3.25 -0.939 -26.576 –
Liu & Pang 2019 289.116 -16.405 3.234 -0.92 -26.636 –
Soubiran et al. 2018 289.087 -16.333 – – – 41.84
Bica et al. 2019 289.159 -16.278 – – – –
Cantat-Gaudin et al. 2018 289.087 -16.333 3.25 -0.939 -26.576 –
Yen et al. 2018 289.076 -16.29 3.53 -1.04 -26.92 –
Loktin & Popova 2017 289.17 -16.284 – -0.338 -10.758 41.07
Kharchenko et al. 2016 289.084 -16.252 – – – –
Dias et al. 2014 289.175 -16.283 – -1.56 -2.79 –
Kharchenko et al. 2013 289.092 -16.25 – -1.59 -28.04 41.0
Gozha et al. 2012 289.175 -16.283 – – – –
Piskunov et al. 2008 289.159 -16.3 – – – –
Kharchenko et al. 2007 289.17 -16.28 – 1.23 – 41.0
Piskunov et al. 2007 289.159 -16.3 – – – –
van den Bergh 2006 289.175 -16.3 – – – –
Kharchenko et al. 2005 289.17 -16.3 – -0.56 -27.74 41.0
Kharchenko et al. 2003 289.06 -16.2 – -0.92 -29.27 –
Dias et al. 2002 289.175 -16.283 – -1.1 -27.3 41.07

💡 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– 0.3 0.34 0.81 2455 0.089 117 – –
Li et al. 2025 0.30 0.31 – 2769 0.060 – – –
Hu & Soubiran 2025 – – – – -0.080(5) – – –
Almeida et al. 2025 0.30 0.29 – 2825 – 131 – –
Alfonso et al. 2024 0.32 0.06 – 3403 0.091 – – –
Hunt & Reffert 2024 – – – – – 126(1) – –
Cavallo et al. 2024 0.30 0.84 – 1072 0.030 – – –
Hunt & Reffert 2023 0.29 0.31 0.81 889 – – – –
Qin et al. 2023 0.32 0.25 – 2818 – – – –
Just et al. 2023 – – – 2138 – 108 – –
Tarricq et al. 2022 0.32 – – 3090 – – – –
Dias et al. 2021 0.30 0.29 – 2825 0.089 – – –
Cantat-Gaudin et al. 2020 0.32 0.06 – 3020 – – – –
Donor et al. 2020 – – – – 0.120 – – –
Cantat-Gaudin & Anders 2020 0.30 – – – – – – –
Liu & Pang 2019 – – – 912 0.500 – – –
Soubiran et al. 2018 0.30 – – – – – – –
Cantat-Gaudin et al. 2018 0.30 – – – – – – –
Yen et al. 2018 0.27 0.18 – 724 – – – –
Loktin & Popova 2017 0.47 0.63 – 16 – – – –
Kharchenko et al. 2016 0.27 0.34 – 2138 – – – –
Kharchenko et al. 2013 0.27 0.34 – 2138 – – – –
Gozha et al. 2012 0.17 – – 3 – 59 – –
Piskunov et al. 2008 0.17 0.46 – 2455 – 141(1) – –
Piskunov et al. 2007 0.17 0.46 – 2455 – 72 – –
van den Bergh 2006 0.17 0.46 – – – – – –
Kharchenko et al. 2005 0.17 0.46 – 2455 – – – –
Kharchenko et al. 2003 0.33 – – – – – – –
Dias et al. 2002 0.29 0.78 – 2512 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 14561 13.6 289.19 -16.57 3.26 -1.01 -26.52 42.04 0.0

💡 Note: The % column shows the percentage of members that Ruprecht 147 shares with each listed object.

Visualization
ℹī¸
Ruprecht 147 UCC
Ruprecht 147 HUNT23
Ruprecht 147 CANTAT20
Galactocentric position diagram