Ruprecht 127

(MWSC 2649)

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0.90 UTI
0.76
CN
1.0
Cdens
1.0
CC3
0.87
Clit
1.0
Cdup
Nm (P>50%) 126
Core radius and density 1.4 [pc], 5.6 [pc-2]
C3 classification AA
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.87 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 127 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, young cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is well-studied in the literature.

Palma et al. (2025)
Part of multiple system G170, along with HSC_2912, CWNU_50, HSC_2921 and UBC_564.

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

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.94 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.94 (50th percentile).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.1267, e_all=0.1332.

Data
🔍 Search references for Ruprecht 127 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 264.462 -36.314 0.401 -0.294 -2.292 32.665
Almeida et al. 2025 264.466 -36.308 – – – –
Hunt & Reffert 2024 264.454 -36.312 0.395 -0.295 -2.279 16.834
Celli et al. 2024 264.462 -36.309 – – – –
Cavallo et al. 2024 264.469 -36.305 0.394 – – –
Hunt & Reffert 2023 264.454 -36.312 0.395 -0.295 -2.279 16.834
Almeida et al. 2023 264.467 -36.306 – – – –
Just et al. 2023 264.458 -36.304 – – – –
Jaehnig et al. 2021 264.467 -36.302 0.43 -0.285 -2.278 –
Rain et al. 2021 264.462 -36.309 0.385 -0.297 -2.266 –
Richer et al. 2021 264.46 -36.309 0.386 -0.294 -2.265 –
Dias et al. 2021 264.466 -36.308 0.391 -0.289 -2.26 –
Cantat-Gaudin et al. 2020 264.462 -36.309 0.385 -0.297 -2.266 –
Cantat-Gaudin & Anders 2020 264.462 -36.309 0.385 -0.297 -2.266 –
Cantat-Gaudin et al. 2018 264.462 -36.309 0.385 -0.297 -2.266 –
Dias et al. 2018 – – – -0.97 -2.62 –
Loktin & Popova 2017 264.465 -36.301 – -4.813 -2.97 -29.0
Sampedro et al. 2017 264.462 -36.3 – 0.36 -2.51 –
Joshi et al. 2016 264.468 -36.304 – – – –
Kharchenko et al. 2016 264.458 -36.304 – – – –
Dias et al. 2014 264.462 -36.3 – 0.68 -2.69 –
Kharchenko et al. 2013 264.468 -36.304 – -0.92 -2.09 -29.0
Gozha et al. 2012 264.462 -36.3 – – – –
Kharchenko et al. 2007 264.46 -36.3 – 0.04 – –
Ahumada & Lapasset 2007 264.45 -36.3 – – – –
van den Bergh 2006 264.425 -36.267 – – – –
Dias et al. 2002 264.462 -36.3 – 0.68 -2.69 -28.9
Dambis 1999 264.462 -36.3 – – – –
Lynga 1987 264.419 -36.266 – – – –

💡 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– 2.14 3.12 2.56 22 0.153 716 0.64 0
Almeida et al. 2025 2.63 2.85 – 6 – 716 – –
Hunt & Reffert 2024 2.36 3.38 2.56 11 – 2510(1) – –
Celli et al. 2024 – – – 14 – 716 – –
Cavallo et al. 2024 2.08 3.47 – 23 0.090 – – –
Hunt & Reffert 2023 2.36 3.38 2.56 11 – – – –
Almeida et al. 2023 2.14 2.99 – 13 0.153 913(1) 0.64 –
Just et al. 2023 – – – 35 – 57 – –
Jaehnig et al. 2021 2.32(1) – – – – – – –
Rain et al. 2021 2.41 3.12 – 22 – – – 0
Richer et al. 2021 – 2.34 – – – – – –
Dias et al. 2021 2.63 2.85 – 6 0.233 – – –
Cantat-Gaudin et al. 2020 2.30 3.04 – 13 – – – –
Kounkel et al. 2020 2.45 3.49 – 89 – – – –
Cantat-Gaudin & Anders 2020 2.41 – – – – – – –
Cantat-Gaudin et al. 2018 2.41 – – – – – – –
Loktin & Popova 2017 1.48 3.10 – 24 – – – –
Joshi et al. 2016 1.44 3.58 – 35 – – – –
Kharchenko et al. 2016 1.44 3.58 – 35 – – – –
Kharchenko et al. 2013 1.44 3.58 – 35 – – – –
Gozha et al. 2012 1.47 – – 22 – – – –
Ahumada & Lapasset 2007 – 3.12 – 22 – – – 0
van den Bergh 2006 1.47 3.12 – 22 – – – –
Dias et al. 2002 1.47 3.12 – 22 – – – –
Dambis 1999 1.39 3.27 – 20 – – – –
Lynga 1987 1.50 3.12 – 6 – – – –

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

Visualization
ℹī¸
Ruprecht 127 UCC
Ruprecht 127 HUNT23
Ruprecht 127 CANTAT20
Galactocentric position diagram