Berkeley 87

(MWSC 3325)

Click to load Aladin Lite
0.28 UTI
0.76
CN
1.0
Cdens
1.0
CC3
1.0
Clit
0.3
Cdup
N50 (P>50% members) 139
Stellar density (N50/rad) 21.7 [N/pc2]
C3 classification AA
  • CN 0.76 Rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very high quality
  • Clit 1.0 Very well-studied
  • Cdup 0.3 Possibly duplicate
πŸ“₯ Members πŸ“Š Colab πŸ”¬ Bayestar19 MOCAMOCA πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
Berkeley 87 is a rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by high extinction. It is catalogued as a massive, near-solar metallicity, very young cluster, but with a large variance across recent sources for the distance, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

⚠️ Warning: This is possibly a duplicate object, which shares a significant percentage of members with at least one previously reported entry. See table with shared members information.

Liu et al. (2025)
Classified as primordial binary cluster 36 along with Berkeley_86, and of multiple system 17 along with NGC_6913, FoF_2179 and Berkeley_86.

Palma et al. (2025)
Part of multiple system G75, along with HSC_599, Berkeley_86, LP_2179 and NGC_6913.

Almeida et al. (2025)
Mass determination: invalid due to poor quality CMD. Isochrone match: worst fit.

Cavallo et al. (2024)
Silver sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.93 (50th percentile).

Ahumada & Lapasset (2007)
The dereddened diagram of possible members in (1982PASP...94..789T) was examined.

Data
πŸ” Search references for Berkeley 87 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 305.408 37.431 0.563 -3.627 -6.317 -7.33
Liu et al. 2025 305.41 37.41 0.56 -3.63 -6.35 8.95
Almeida et al. 2025 305.39 37.442 – – – –
Hunt & Reffert 2024 305.407 37.415 0.563 -3.626 -6.352 8.946
Celli et al. 2024 305.396 37.433 – – – –
Cavallo et al. 2024 305.397 37.422 0.562 – – –
Hunt & Reffert 2023 305.407 37.415 0.563 -3.626 -6.352 8.946
Almeida et al. 2023 305.365 37.452 – – – –
Just et al. 2023 305.403 37.402 – – – –
Jaehnig et al. 2021 305.4 37.406 0.598 -3.654 -6.268 –
Rain et al. 2021 305.396 37.433 0.573 -3.654 -6.264 –
Dias et al. 2021 305.39 37.442 0.571 -3.647 -6.25 –
Cantat-Gaudin et al. 2020 305.396 37.433 0.573 -3.654 -6.264 –
SΓ‘nchez et al. 2020 305.425 37.367 – -3.522 -6.348 –
Zhong et al. 2020 305.396 37.433 – -3.654 -6.264 49.377
Cantat-Gaudin & Anders 2020 305.396 37.433 0.573 -3.654 -6.264 –
Soubiran et al. 2018 305.396 37.433 – – – -7.5
Cantat-Gaudin et al. 2018 305.396 37.433 0.573 -3.654 -6.264 –
Loktin & Popova 2017 305.43 37.405 – -0.678 -0.156 -8.6
Kharchenko et al. 2016 305.403 37.402 – – – –
Dias et al. 2014 305.425 37.367 – -1.93 -3.11 -65.0
Kharchenko et al. 2013 305.407 37.405 – -5.2 -2.4 -8.6
Ahumada & Lapasset 2007 305.425 37.367 – – – –
van den Bergh 2006 305.429 37.37 – – – –
Dias et al. 2002 305.425 37.367 – -1.93 -3.11 -65.0

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] Bfrac BSS
UCC 99999– 1.66 4.27 2.67 14 0.025 1196 0.69 0
Liu et al. 2025 5.55 1.46 – 25 – – – –
Almeida et al. 2025 1.71 3.77 – 6 – 992 – –
Hunt & Reffert 2024 – – – – – 1196(1) – –
Celli et al. 2024 – – – 8 – 1279 – –
Cavallo et al. 2024 1.71 4.21 – 15 0.520 – – –
Hunt & Reffert 2023 1.73 4.66 2.67 5 – – – –
Almeida et al. 2023 1.67 3.97 – 8 0.051 1779(1) 0.69 –
Just et al. 2023 – – – 13 – 86 – –
Jaehnig et al. 2021 1.67(1) – – – – – – –
Rain et al. 2021 1.66 4.29 – 14 – – – 0
Dias et al. 2021 1.71 3.77 – 6 -0.233 – – –
Cantat-Gaudin et al. 2020 1.64 3.68 – 8 – – – –
Kounkel et al. 2020 1.74 3.47 – 42 – – – –
Zhong et al. 2020 1.24 4.27 – 7100 0.000 – – –
Cantat-Gaudin & Anders 2020 1.66 – – – – – – –
Soubiran et al. 2018 1.66 – – – – – – –
Cantat-Gaudin et al. 2018 1.66 – – – – – – –
Loktin & Popova 2017 0.74 4.57 – 15 – – – –
Kharchenko et al. 2016 1.24 4.27 – 13 – – – –
Kharchenko et al. 2013 1.24 4.27 – 13 – – – –
Ahumada & Lapasset 2007 – 4.32 – 14 – – – 0
van den Bergh 2006 0.63 4.32 – 14 – – – –
Dias et al. 2002 0.63 4.32 – 14 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
DB2001 5 70.5 305.41 37.42 0.56 -3.63 -6.35 -7.33 0.55

πŸ’‘ Note: The % column shows the percentage of members that Berkeley 87 shares with each listed object.

Visualization
ℹ️
Berkeley 87 UCC
Berkeley 87 HUNT23
Berkeley 87 CANTAT20
Galactocentric position diagram