ESO 092 18

(MWSC 1781)

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0.86 UTI
0.83
CN
1.0
Cdens
0.75
CC3
0.86
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 310
Radius (P>50% members) 1.0 [arcmin]
  • CN 0.83 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 0.86 Well-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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ESO 092 18 is a rich, very 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 well-studied in the literature.

(*): The parallax distance estimate (~18.73 kpc) differs significantly from the median photometric distance (~10.61 kpc).

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

Extremely distant Low extinction Very massive Near-solar metallicity Old

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for ESO 092 18 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 – 153.735 -64.614 0.053 -3.549 2.74 55.454
Hu & Soubiran 2025 153.732 -64.609 – – – –
Hunt & Reffert 2024 153.735 -64.613 0.054 -3.513 2.737 52.165
Cavallo et al. 2024 153.732 -64.609 0.063 – – –
Hunt & Reffert 2023 153.735 -64.613 0.054 -3.513 2.737 52.165
Just et al. 2023 153.692 -64.586 – – – –
Perren et al. 2022 153.73 -64.611 – – – –
Cantat-Gaudin et al. 2020 153.73 -64.611 0.032 -3.551 2.761 –
Cantat-Gaudin & Anders 2020 153.73 -64.611 0.032 -3.551 2.761 –
Bica et al. 2019 153.733 -64.603 – – – –
Cantat-Gaudin et al. 2018 153.73 -64.611 0.032 -3.551 2.761 –
Loktin & Popova 2017 153.735 -64.612 – -7.758 -2.085 –
Kharchenko et al. 2016 153.692 -64.586 – – – –
Dias et al. 2014 153.742 -64.612 – -5.41 3.93 –
Kharchenko et al. 2013 153.697 -64.59 – -6.21 2.95 –
van den Bergh 2006 153.725 -64.617 – – – –
Dias et al. 2002 153.742 -64.612 – -5.41 3.93 –

💡 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
Hu & Soubiran 2025 – – – – -0.350* – – –
Hunt & Reffert 2024 – – – – – 1055* – –
Cavallo et al. 2024 7.80 0.65 – 9550 -0.320 – – –
Hunt & Reffert 2023 13.08 1.51 1.54 565 – – – –
Just et al. 2023 – – – 1413 – 5188 – –
Perren et al. 2022 11.22 0.74 – 4786 -0.300 52000 0.60 –
Cantat-Gaudin et al. 2020 9.91 0.47 – 2884 – – – –
Cantat-Gaudin & Anders 2020 16.35 – – – – – – –
Cantat-Gaudin et al. 2018 16.35 – – – – – – –
Loktin & Popova 2017 9.29 1.53 – 1074 – – – –
Kharchenko et al. 2016 9.55 0.97 – 1413 – – – –
Kharchenko et al. 2013 9.55 0.97 – 1413 – – – –
van den Bergh 2006 10.61 1.55 – 1047 – – – –
Dias et al. 2002 10.61 1.55 – 1057 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
HSC 2365 9.4 153.73 -64.61 0.07 -3.53 2.74 57.31 0.0

💡 Note: The % column shows the percentage of members that ESO 092 18 shares with each listed object.

Visualization
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ESO 092 18 UCC
ESO 092 18 HUNT23
ESO 092 18 CANTAT20
Galactocentric position diagram