Berkeley 93

(MWSC 3574; OCL 239)

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0.81 UTI
0.76
CN
1.0
Cdens
1.0
CC3
0.65
Clit
1.0
Cdup
N50 (P>50% members) 132
Radius (P>50% members) 1.4 [arcmin]
C3 classification AA
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 0.65 Moderately studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
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Berkeley 93 is a rich, very dense object of very high C3 quality. Its parallax locates it at a very large* distance, well above the mid-plane, affected by high extinction. It is catalogued as a very massive, near-solar metallicity, young cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~10.50 kpc) differs significantly from the median photometric distance (~5.73 kpc).

Note: This object shares a significant percentage of members with a later reported entry. See table with shared members information.

Very distant High extinction Very massive Near-solar metallicity Young

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Berkeley 93 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 99999– 328.864 63.938 0.095 -2.587 -1.464 -72.711
Hu & Soubiran 2025 328.889 63.938 – – – –
Hunt & Reffert 2024 328.872 63.927 0.056 -2.483 -1.449 -72.713
Cavallo et al. 2024 328.889 63.938 0.056 – – –
Hunt & Reffert 2023 328.872 63.927 0.056 -2.483 -1.449 -72.713
Just et al. 2023 328.945 63.942 – – – –
Bica et al. 2019 328.882 63.928 – – – –
Kharchenko et al. 2016 328.945 63.942 – – – –
Kharchenko et al. 2013 328.95 63.945 – -1.27 -0.33 –
Kharchenko et al. 2012 328.875 63.94 – -0.96 -1.03 –
van den Bergh 2006 329.05 63.933 – – – –
Dias et al. 2002 329.05 63.933 – -0.96 -1.03 –

💡 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– 5.73 4.65 1.46 64 -0.435 5876 – –
Hu & Soubiran 2025 – – – – -0.400(5) – – –
Hunt & Reffert 2024 – – – – – 1799(1) – –
Cavallo et al. 2024 8.47 2.67 – 1622 -0.470 – – –
Hunt & Reffert 2023 10.77 3.13 1.46 497 – – – –
Just et al. 2023 – – – 28 – 9954 – –
Kharchenko et al. 2016 5.73 9.23 – 28 – – – –
Kharchenko et al. 2013 5.73 9.23 – 28 – – – –
Kharchenko et al. 2012 11.00 9.22 – 14 – – – –
van den Bergh 2006 5.60 4.65 – 100 – – – –
Dias et al. 2002 5.60 4.65 – 100 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWNU 3125 58.3 328.87 63.94 0.12 -2.58 -1.43 -72.71 0.01

💡 Note: The % column shows the percentage of members that Berkeley 93 shares with each listed object.

Visualization
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Berkeley 93 UCC
Berkeley 93 HUNT23
Galactocentric position diagram