Ruprecht 120

(MWSC 2426)

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0.76 UTI
0.68
CN
1.0
Cdens
0.5
CC3
0.82
Clit
1.0
Cdup
C3 classification BB
Number of members (P>50%) 85
Radius (P>50% members) 3.8 [arcmin]
  • CN 0.68 Moderately populated
  • Cdens 1.0 Very dense
  • CC3 0.5 Intermediate quality
  • Clit 0.82 Well-studied
  • Cdup 1.0 Unique
πŸ“₯ Members πŸ“Š Colab πŸ”¬ Bayestar19 πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
Ruprecht 120 is a moderately populated, very dense object of intermediate C3 quality. Its parallax locates it at a moderate distance, near the mid-plane, affected by moderate extinction. It is catalogued as a 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.
Relatively close Moderate extinction Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Ruprecht 120 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 248.791 -48.285 0.465 -0.851 -2.159 –
Li et al. 2025 248.789 -48.282 0.415 -0.88 -2.2 –
Almeida et al. 2025 248.789 -48.282 – – – –
Hunt & Reffert 2024 248.807 -48.277 0.488 -0.862 -2.148 –
Cavallo et al. 2024 248.795 -48.278 0.485 – – –
He et al. 2023 248.785 -48.268 0.514 -0.884 -2.184 –
Hunt & Reffert 2023 248.807 -48.277 0.488 -0.862 -2.148 –
Almeida et al. 2023 248.792 -48.286 – – – –
Just et al. 2023 248.779 -48.299 – – – –
Dias et al. 2021 248.789 -48.282 0.415 -0.88 -2.2 –
SΓ‘nchez et al. 2020 248.792 -48.283 – -1.405 -3.757 –
Kharchenko et al. 2016 248.779 -48.299 – – – –
Dias et al. 2014 248.792 -48.283 – -0.67 -2.77 –
Kharchenko et al. 2013 248.79 -48.3 – -2.43 -0.39 –
van den Bergh 2006 248.85 -48.3 – – – –
Dias et al. 2002 248.792 -48.283 – -1.24 -3.44 –

πŸ’‘ 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 1.08 1.75 – 954 -0.027 – – –
Almeida et al. 2025 2.10 2.51 – 18 – 366 – –
Hunt & Reffert 2024 – – – – – 407* – –
Cavallo et al. 2024 1.51 2.76 – 151 -0.370 – – –
He et al. 2023 1.91 3.20 – 50 – – – –
Hunt & Reffert 2023 1.91 2.56 1.53 66 – – – –
Almeida et al. 2023 1.75 2.41 – 25 0.177 221* 0.60 –
Just et al. 2023 – – – 282 – 105 – –
Dias et al. 2021 2.10 2.51 – 18 0.266 – – –
Kharchenko et al. 2016 1.48 2.45 – 282 – – – –
Kharchenko et al. 2013 1.48 2.45 – 282 – – – –
van den Bergh 2006 2.00 2.17 – 151 – – – –
Dias et al. 2002 2.00 2.17 – 151 – – – –

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

Visualization
ℹ️
Ruprecht 120 UCC
Ruprecht 120 HUNT23
Galactocentric position diagram