Ruprecht 83

(VDBH80; FSR 1508; MWSC 1718; OCL 791; vdBergh-Hagen 80; ESO 167 07)

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0.96 UTI
0.81
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 267
Radius (P>50% members) 2.4 [arcmin]
  • 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 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Ruprecht 83 is a rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is very well-studied in the literature.

Note: This object shares a small percentage of members with 4 later reported entries. See table with shared members information.

Distant Moderate extinction Massive Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Ruprecht 83 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 – 147.315 -54.608 0.253 -4.607 2.892 25.151
Li et al. 2025 147.307 -54.611 0.217 -4.639 2.897 –
Almeida et al. 2025 147.31 -54.609 – – – –
Hunt & Reffert 2024 147.325 -54.606 0.259 -4.613 2.886 24.314
Cavallo et al. 2024 147.314 -54.596 0.252 – – –
Hunt & Reffert 2023 147.325 -54.606 0.259 -4.613 2.886 24.314
Just et al. 2023 147.325 -54.608 – – – –
Dias et al. 2021 147.31 -54.609 0.219 -4.633 2.923 24.615
Cantat-Gaudin et al. 2020 147.307 -54.611 0.217 -4.639 2.897 –
Cantat-Gaudin & Anders 2020 147.307 -54.611 0.217 -4.639 2.897 –
Soubiran et al. 2018 147.307 -54.611 – – – 24.75
Bica et al. 2019 147.316 -54.59 – – – –
Cantat-Gaudin et al. 2018 147.307 -54.611 0.217 -4.639 2.897 –
Loktin & Popova 2017 147.315 -54.6 – -9.655 0.943 –
Kharchenko et al. 2016 147.325 -54.608 – – – –
Dias et al. 2014 147.312 -54.6 – -5.1 -1.4 –
Kharchenko et al. 2013 147.33 -54.612 – -8.44 3.27 –
Froebrich et al. 2007 147.317 -54.606 – – – –
van den Bergh 2006 147.278 -54.569 – – – –
Dias et al. 2002 147.312 -54.6 – -5.1 -1.4 –

💡 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 3.05 2.61 – 725 -0.145 – – –
Almeida et al. 2025 3.11 2.58 – 153 – 792 – –
Hunt & Reffert 2024 – – – – – 2079* – –
Cavallo et al. 2024 3.47 2.84 – 251 0.490 – – –
Hunt & Reffert 2023 3.54 2.98 2.20 102 – – – –
Just et al. 2023 – – – 3 – 1607 – –
Dias et al. 2021 3.11 2.58 – 153 0.151 – – –
Cantat-Gaudin et al. 2020 3.70 2.38 – 112 – – – –
Cantat-Gaudin & Anders 2020 4.06 – – – – – – –
Soubiran et al. 2018 4.06 – – – – – – –
Cantat-Gaudin et al. 2018 4.06 – – – – – – –
Loktin & Popova 2017 2.54 1.44 – 290 – – – –
Kharchenko et al. 2016 6.02 3.87 – 3 – – – –
Kharchenko et al. 2013 6.02 3.87 – 3 – – – –
van den Bergh 2006 2.46 1.40 – 282 – – – –
Dias et al. 2002 2.46 1.40 – 282 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0525 10.1 147.31 -54.6 0.22 -4.6 2.87 – 0.0
OC 0526 9.4 147.32 -54.61 0.26 -4.64 2.87 – 0.0
OC 0527 9.4 147.32 -54.61 0.26 -4.61 2.88 – 0.0
OC 0528 9.4 147.31 -54.62 0.29 -4.6 2.92 25.6 0.0

💡 Note: The % column shows the percentage of members that Ruprecht 83 shares with each listed object.

Visualization
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Ruprecht 83 UCC
Ruprecht 83 HUNT23
Ruprecht 83 CANTAT20
Galactocentric position diagram