Ruprecht 94

(MWSC 1950)

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0.70 UTI
0.73
CN
0.25
Cdens
1.0
CC3
0.77
Clit
1.0
Cdup
Nm (P>50%) 96
Core radius and density 3.3 [pc], 1.2 [pc-2]
C3 classification AA
  • CN 0.73 Moderately populated
  • Cdens 0.25 Loose
  • 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 94 is a moderately populated, loose object of very high C3 quality. Its parallax locates it at a moderate distance, below the mid-plane, affected by low extinction. It is catalogued as a massive, near-solar metallicity, very young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is well-studied in the literature.

Liu et al. (2025)
Classified as primordial binary cluster 268 along with IC_2944, and of multiple system 74 along with IC_2944 and Stock_14.

Palma et al. (2025)
Part of multiple system G208, along with IC_2944 and Stock_14.

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

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=0.1664, e_all=0.0224.

Piecka & Paunzen (2021)
Belongs to cluster aggregate 'Agg09' along with BH 121 and IC 2948.

Data
🔍 Search references for Ruprecht 94 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 172.684 -63.423 0.385 -6.389 0.836 3.217
Liu et al. 2025 172.64 -63.46 0.39 -6.42 0.88 -0.1
Almeida et al. 2025 172.867 -63.458 – – – –
Hunt & Reffert 2024 172.638 -63.456 0.386 -6.417 0.877 -0.096
Celli et al. 2024 172.772 -63.426 – – – –
Cavallo et al. 2024 172.648 -63.435 0.386 – – –
Hunt & Reffert 2023 172.638 -63.456 0.386 -6.417 0.877 -0.096
Just et al. 2023 172.626 -63.476 – – – –
Dias et al. 2021 172.867 -63.458 0.37 -6.364 0.772 –
Cantat-Gaudin et al. 2020 172.772 -63.426 0.369 -6.378 0.769 –
Cantat-Gaudin & Anders 2020 172.772 -63.426 0.369 -6.378 0.769 –
Dias et al. 2019 172.654 -63.433 0.369 -6.366 0.886 1.633
Soubiran et al. 2018 172.772 -63.426 – – – -8.71
Cantat-Gaudin et al. 2018 172.772 -63.426 0.369 -6.378 0.769 –
Loktin & Popova 2017 172.65 -63.433 – -5.601 0.667 2.0
Sampedro et al. 2017 172.654 -63.433 – -4.15 -2.62 –
Kharchenko et al. 2016 172.626 -63.476 – – – –
Dias et al. 2014 172.654 -63.433 – -4.19 -2.71 –
Kharchenko et al. 2013 172.635 -63.48 – -5.06 0.59 2.0
Gozha et al. 2012 172.654 -63.433 – – – –
Piskunov et al. 2008 172.664 -63.45 – – – –
Kharchenko et al. 2007 172.65 -63.43 – 0.25 – 2.0
Piskunov et al. 2007 172.664 -63.45 – – – –
Kharchenko et al. 2005 172.68 -63.45 – -4.87 -0.15 2.0
Kharchenko et al. 2003 172.44 -63.39 – -3.84 -4.96 –
Lynga 1987 172.6 -63.441 – – – –

💡 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– 2.445 0.99 1.48 14 0.115 1679 – –
Liu et al. 2025 4.19 0.45 – 10 – – – –
Almeida et al. 2025 2.33 1.19 – 14 – 297 – –
Hunt & Reffert 2024 2.38 1.14 1.48 9 – 638(1) – –
Celli et al. 2024 – – – 24 – 351 – –
Cavallo et al. 2024 1.91 0.81 – 38 0.170 – – –
Hunt & Reffert 2023 2.38 1.14 1.48 9 – – – –
Just et al. 2023 – – – 10 – 1679 – –
Dias et al. 2021 2.33 1.19 – 14 0.115 – – –
Cantat-Gaudin et al. 2020 2.25 0.82 – 25 – – – –
Kounkel et al. 2020 2.54 1.71 – 11 – – – –
Cantat-Gaudin & Anders 2020 2.51 – – – – – – –
Dias et al. 2019 1.80 1.01 – 14 -0.705 – – –
Soubiran et al. 2018 2.51 – – – – – – –
Cantat-Gaudin et al. 2018 2.51 – – – – – – –
Loktin & Popova 2017 1.14 0.97 – 28 – – – –
Kharchenko et al. 2016 2.93 1.61 – 10 – – – –
Kharchenko et al. 2013 2.93 1.61 – 10 – – – –
Gozha et al. 2012 1.11 – – 15 – 26303 – –
Piskunov et al. 2008 3.40 0.95 – 15 – 29040(1) – –
Piskunov et al. 2007 3.40 0.95 – 15 – 5470 – –
Kharchenko et al. 2005 3.40 0.95 – 15 – – – –
Kharchenko et al. 2003 1.11 0.32 – – – – – –

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

Visualization
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Ruprecht 94 UCC
Ruprecht 94 HUNT23
Ruprecht 94 CANTAT20
Galactocentric position diagram