Ruprecht 143

(MWSC 2945; OCL 62; MWSC 1408)

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0.82 UTI
0.8
CN
1.0
Cdens
1.0
CC3
0.65
Clit
1.0
Cdup
Nm (P>50%) 242
Core radius and density 1.4 [pc], 8.0 [pc-2]
C3 classification AA
  • CN 0.8 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.65 Moderately studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Ruprecht 143 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by high 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 moderately studied in the literature.

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: intermediate fit. Silver sample.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD classes: 0.97 (50th percentile), true positive (human-assigned).

Hunt & Reffert (2023)
Classified as open cluster. CMD classes: 0.97 (50th percentile), true positive (human-assigned).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.2633, e_all=0.0675.

Morales et al. (2013)
Classified as morphological type 'OC2' (totally exposed cluster without correlation with ATLASGAL emission). Morphological flag: exposed cluster, without submm emission.

Data
🔍 Search references for Ruprecht 143 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 278.173 -12.15 0.343 0.727 -1.1 11.005
Li et al. 2025 278.174 -12.148 0.323 0.722 -1.086 –
Almeida et al. 2025 278.171 -12.149 – – – –
Hunt & Reffert 2024 278.174 -12.151 0.348 0.71 -1.103 3.874
Cavallo et al. 2024 278.166 -12.146 0.349 – – –
Hunt & Reffert 2023 278.174 -12.151 0.348 0.71 -1.103 3.874
Just et al. 2023 278.142 -12.141 – – – –
Dias et al. 2022 278.159 -12.14 0.344 0.708 -1.106 0.163
Jadhav & Subramaniam 2021 278.174 -12.148 – – – –
Dias et al. 2021 278.171 -12.149 0.32 0.728 -1.078 12.447
Cantat-Gaudin et al. 2020 278.174 -12.148 0.323 0.722 -1.086 –
Cantat-Gaudin & Anders 2020 278.174 -12.148 0.323 0.722 -1.086 –
Soubiran et al. 2018 278.174 -12.148 – – – 11.31
Bica et al. 2019 278.164 -12.133 – – – –
Cantat-Gaudin et al. 2018 278.174 -12.148 0.323 0.722 -1.086 –
Sampedro et al. 2017 278.15 -12.133 – 0.06 -0.76 –
Kharchenko et al. 2016 278.142 -12.141 – – – –
Dias et al. 2014 278.15 -12.133 – -0.36 -0.58 –
Kharchenko et al. 2013 278.149 -12.14 – -2.21 -3.68 –
Morales et al. 2013 278.15 -12.133 – – – –
Dias et al. 2002 278.15 -12.133 – -0.36 -0.58 –
Lynga 1987 278.155 -12.128 – – – –

💡 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– 2.48 3.08 2.08 408 0.120 816 – 0
Li et al. 2025 2.23 2.87 – 466 0.053 – – –
Almeida et al. 2025 2.43 2.77 – 326 – 701 – –
Hunt & Reffert 2024 2.53 3.12 2.08 128 – 2618(1) – –
Cavallo et al. 2024 1.94 3.27 – 468 -0.420 – – –
Hunt & Reffert 2023 2.53 3.12 2.08 128 – – – –
Just et al. 2023 – – – 447 – 237 – –
Dias et al. 2022 2.26(1) 2.98(1) – 333(1) 0.188(1) – – –
Jadhav & Subramaniam 2021 2.77 2.38 – 398 – 930 – 0(1)
Dias et al. 2021 2.43 2.77 – 326 0.188 – – –
Cantat-Gaudin et al. 2020 2.77 2.38 – 398 – – – –
Kounkel et al. 2020 2.74 3.08 – 417 – – – –
Cantat-Gaudin & Anders 2020 2.84 – – – – – – –
Soubiran et al. 2018 2.84 – – – – – – –
Cantat-Gaudin et al. 2018 2.84 – – – – – – –
Kharchenko et al. 2016 2.06 3.22 – 447 – – – –
Kharchenko et al. 2013 2.06 3.22 – 447 – – – –
Dias et al. 2002 2.06 3.22 – 447 – – – –

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

Visualization
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Ruprecht 143 UCC
Ruprecht 143 HUNT23
Ruprecht 143 CANTAT20
Galactocentric position diagram