Berkeley 64

(MWSC 182)

Click to load Aladin Lite
0.91 UTI
0.78
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 176
Radius (P>50% members) 2.5 [arcmin]
  • CN 0.78 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Berkeley 64 is a rich, very dense object of high C3 quality. Its parallax locates it at a large* distance, above the mid-plane, affected by moderate extinction. It is catalogued as a massive, metal-poor, old cluster (see Parameters). It is very well-studied in the literature.

(*): The parallax distance estimate (~6.09 kpc) differs significantly from the median photometric distance (~4.67 kpc).

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

Distant Moderate extinction Massive Metal-poor Old

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Berkeley 64 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 35.426 65.887 0.164 -0.553 0.942 -40.495
Li et al. 2025 35.428 65.888 0.159 -0.511 0.998 –
Almeida et al. 2025 35.42 65.893 – – – –
Hunt & Reffert 2024 35.433 65.888 0.166 -0.562 0.939 -35.386
Cavallo et al. 2024 35.443 65.897 0.166 – – –
Hunt & Reffert 2023 35.433 65.888 0.166 -0.562 0.939 -35.386
Just et al. 2023 35.402 65.888 – – – –
Jaehnig et al. 2021 35.429 65.884 0.188 -0.519 1.01 –
Dias et al. 2021 35.42 65.893 0.163 -0.502 0.996 –
Cantat-Gaudin et al. 2020 35.428 65.888 0.159 -0.511 0.998 –
Bica et al. 2019 35.428 65.893 – – – –
Loktin & Popova 2017 35.415 65.89 – -1.836 1.516 –
Kharchenko et al. 2016 35.402 65.888 – – – –
Kharchenko et al. 2013 35.415 65.89 – -2.19 2.38 –
Gozha et al. 2012 35.275 65.9 – – – –
Kharchenko et al. 2012 35.415 65.89 – -2.2 2.38 –
van den Bergh 2006 35.262 65.897 – – – –
Chen et al. 2003 35.25 65.898 – – – –
Dias et al. 2002 35.275 65.9 – -2.2 2.38 –

💡 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 4.67 2.98 – 847 0.016 – – –
Almeida et al. 2025 4.55 2.95 – 843 – 593 – –
Hunt & Reffert 2024 – – – – – 1896* – –
Cavallo et al. 2024 5.83 3.52 – 331 -0.270 – – –
Hunt & Reffert 2023 4.97 3.06 1.51 430 – – – –
Just et al. 2023 – – – 1000 – 1079 – –
Jaehnig et al. 2021 5.26* – – – – – – –
Dias et al. 2021 4.55 2.95 – 843 -0.203 – – –
Cantat-Gaudin et al. 2020 4.79 2.28 – 1230 – – – –
Loktin & Popova 2017 3.61 2.03 – 1000 – – – –
Kharchenko et al. 2016 4.80 2.79 – 1000 – – – –
Kharchenko et al. 2013 4.80 2.79 – 1000 -0.610 – – –
Gozha et al. 2012 3.98 – – 1000 -0.610 – – –
Kharchenko et al. 2012 4.80 2.79 – 1000 -0.610 – – –
van den Bergh 2006 3.98 3.26 – 1000 – – – –
Chen et al. 2003 3.98 3.26 – 1000 -0.610* – – –
Dias et al. 2002 3.98 3.26 – 1000 -0.610 – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0241 14.2 35.43 65.9 0.17 -0.53 0.94 -38.05 0.0

💡 Note: The % column shows the percentage of members that Berkeley 64 shares with each listed object.

Visualization
ℹī¸
Berkeley 64 UCC
Berkeley 64 HUNT23
Berkeley 64 CANTAT20
Galactocentric position diagram