ESO 092 05

(MWSC 1752)

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0.70 UTI
1.0
CN
0.65
Cdens
0.75
CC3
0.55
Clit
1.0
Cdup
Nm (P>50%) 565
Core radius and density 3.1 [pc], 3.2 [pc-2]
C3 classification AB
  • CN 1.0 Very rich
  • Cdens 0.65 Moderately dense
  • CC3 0.75 High quality
  • Clit 0.55 Moderately studied
  • Cdup 1.0 Unique
πŸ“₯ Members πŸ“Š Colab πŸ”¬ Bayestar19 MOCAMOCA πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
ESO 092 05 is a very rich, moderately dense object of high C3 quality. Its parallax locates it at a very large distance, well below the mid-plane, affected by low extinction. It is catalogued as a very massive, near-solar metallicity, old cluster, but with a large variance across recent sources for the age and mass parameters (see Parameters). It is moderately studied in the literature.

Note: This object contains blue stragglers according to at least one source.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.40 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.40 (50th percentile).

Perren et al. (2022)
Ortolani 2008 used BVI photometry to estimate 6 Gyr and 11 kpc, and noted a strongly sub-solar metallicity of [Fe/H]~βˆ’0.7. ASteCA gives 12.7 kpc, 6 Gyr, and [Fe/H]~βˆ’0.12 β€” the age agrees well, the distance is somewhat larger, and the metallicity differs substantially. CG20 gives 12.4 kpc and 6 Gyr, in good agreement with ASteCA. The metallicity discrepancy with Ortolani et al. is likely due to their overestimation of the extinction (E_BV=0.17 vs. ASteCA's 0.11, which is closer to the maximum Schlafly 2011 value for the region).

Hu et al. (2021)
Ellipticities (core, all): e_core=0.1768, e_all=0.3012.

Data
πŸ” Search references for ESO 092 05 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 150.802 -64.752 0.075 -3.039 2.44 70.537
Hu & Soubiran 2025 150.787 -64.762 – – – –
Hunt & Reffert 2024 150.79 -64.754 0.059 -3.024 2.462 27.465
Cavallo et al. 2024 150.787 -64.762 0.057 – – –
Hunt & Reffert 2023 150.79 -64.754 0.059 -3.024 2.462 27.465
Just et al. 2023 150.797 -64.791 – – – –
Perren et al. 2022 150.808 -64.753 – – – –
Jadhav & Subramaniam 2021 150.801 -64.755 – – – –
Cantat-Gaudin et al. 2020 150.801 -64.755 0.061 -2.919 2.397 –
SΓ‘nchez et al. 2020 150.808 -64.753 – -2.767 2.43 –
Cantat-Gaudin & Anders 2020 150.801 -64.755 0.061 -2.919 2.397 –
Bica et al. 2019 150.802 -64.749 – – – –
Cantat-Gaudin et al. 2018 150.801 -64.755 0.061 -2.919 2.397 –
Dias et al. 2018 – – – -5.91 2.55 –
Sampedro et al. 2017 150.808 -64.753 – -6.42 4.84 –
Kharchenko et al. 2016 150.797 -64.791 – – – –
Dias et al. 2014 150.808 -64.753 – -6.56 3.79 –
Kharchenko et al. 2013 150.802 -64.795 – -13.39 4.57 –

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– 11.15 0.35 1.51 1995 -0.290 5858 0.74 2
Hu & Soubiran 2025 – – – – -0.300(5) – – –
Hunt & Reffert 2024 12.23 0.69 1.51 1584 – 693(1) – –
Cavallo et al. 2024 8.09 0.62 – 7413 -0.280 – – –
Hunt & Reffert 2023 12.23 0.69 1.51 1585 – – – –
Just et al. 2023 – – – 1995 – 845 – –
Perren et al. 2022 12.71 0.35 – 6026 -0.120 33000 0.74 –
Spina et al. 2022 – – – – -0.344 – – –
Jadhav & Subramaniam 2021 12.42 0.17 – 4467 – 10870 – 2(1)
Cantat-Gaudin et al. 2020 12.42 0.17 – 4467 – – – –
Kounkel et al. 2020 7.30 1.22 – 1072 – – – –
Cantat-Gaudin & Anders 2020 11.15 – – – – – – –
Cantat-Gaudin et al. 2018 11.15 – – – – – – –
Kharchenko et al. 2016 5.17 0.33 – 1995 – – – –
Kharchenko et al. 2013 5.17 0.33 – 1995 – – – –

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

Visualization
ℹ️
ESO 092 05 UCC
ESO 092 05 HUNT23
ESO 092 05 CANTAT20
Galactocentric position diagram