Ruprecht 83

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

Click to load Aladin Lite
0.87 UTI
0.81
CN
1.0
Cdens
1.0
CC3
0.77
Clit
1.0
Cdup
Nm (P>50%) 267
Core radius and density 1.8 [pc], 8.6 [pc-2]
C3 classification AA
  • CN 0.81 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.77 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 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 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.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.99 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.2475, e_all=0.0918.

Data
🔍 Search references for Ruprecht 83 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 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 –
Dias et al. 2018 – – – -4.88 1.43 –
Loktin & Popova 2017 147.315 -54.6 – -9.655 0.943 –
Sampedro et al. 2017 147.312 -54.6 – -4.65 -1.27 –
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 –
Bukowiecki et al. 2011 147.329 -54.591 – – – –
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 –
Lynga 1987 147.3 -54.569 – – – –
van den Bergh & Hagen 1975 146.875 -54.333 – – – –

💡 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– 3.505 2.595 2.2 153 0.151 1410 – –
Li et al. 2025 3.05 2.61 – 725 -0.145 – – –
Almeida et al. 2025 3.11 2.58 – 153 – 792 – –
Hunt & Reffert 2024 3.54 2.98 2.20 102 – 2079(1) – –
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 – – – –
Kounkel et al. 2020 3.80 3.08 – 126 – – – –
Cantat-Gaudin & Anders 2020 4.06 – – – – – – –
Soubiran et al. 2018 4.06 – – – – – – –
Cantat-Gaudin et al. 2018 4.06 – – – – – – –
Loktin & Popova 2017 2.54 1.46 – 290 – – – –
Kharchenko et al. 2016 6.02 3.94 – 3 – – – –
Kharchenko et al. 2013 6.02 3.94 – 3 – – – –
Bukowiecki et al. 2012 – – – – – 1214 – –
Bukowiecki et al. 2011 1.74(1) 1.77 – 447 – – – –
van den Bergh 2006 2.46 1.42 – 282 – – – –
Dias et al. 2002 2.46 1.43 – 282 – – – –
Lynga 1987 2.24 – – – – – – –

(N): Indicates that there are N extra values assigned to this parameter 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
ℹī¸
Ruprecht 83 UCC
Ruprecht 83 HUNT23
Ruprecht 83 CANTAT20
Galactocentric position diagram