ESO 521 38

(MWSC 2825)

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0.56 UTI
0.52
CN
0.44
Cdens
1.0
CC3
0.42
Clit
1.0
Cdup
Nm (P>50%) 55
Core radius and density 1.1 [pc], 2.2 [pc-2]
C3 classification AA
  • CN 0.52 Moderately populated
  • Cdens 0.44 Loose
  • CC3 1.0 Very high quality
  • Clit 0.42 Poorly 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 521 38 is a moderately populated, loose object of very high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by low extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the mass parameter (see Parameters). It is poorly studied in the literature.

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

Palma et al. (2025)
Part of multiple system G203, along with NGC_6530, UBC_94, HSC_94 and Collinder_367.

Cavallo et al. (2024)
Gold sample.

Hunt & Reffert (2024)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Hunt & Reffert (2023)
Classified as open cluster. CMD class: 0.98 (50th percentile).

Data
πŸ” Search references for ESO 521 38 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 272.397 -24.544 0.816 0.381 -2.413 -14.889
Hunt & Reffert 2024 272.399 -24.543 0.807 0.376 -2.404 -8.834
Cavallo et al. 2024 272.38 -24.573 0.808 – – –
Hunt & Reffert 2023 272.399 -24.543 0.807 0.376 -2.404 -8.834
Just et al. 2023 272.332 -24.531 – – – –
SΓ‘nchez et al. 2020 272.354 -24.53 – -0.132 -2.104 –
Bica et al. 2019 272.342 -24.53 – – – –
Dias et al. 2018 – – – 0.34 -2.24 –
Sampedro et al. 2017 272.354 -24.53 – – – –
Joshi et al. 2016 272.34 -24.53 – – – –
Kharchenko et al. 2016 272.332 -24.531 – – – –
Dias et al. 2014 272.354 -24.53 – 1.77 -2.47 –
Kharchenko et al. 2013 272.34 -24.53 – -0.85 -2.46 –
Piskunov et al. 2008 272.342 -24.53 – – – –
Kharchenko et al. 2005 272.35 -24.53 – 0.41 -2.07 –
Dias et al. 2002 272.354 -24.53 – 1.77 -2.47 –

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– 1.49 0.83 0.88 208 -0.140 191 – –
Hunt & Reffert 2024 1.19 0.83 0.88 209 – 404(1) – –
Cavallo et al. 2024 1.10 1.24 – 132 -0.140 – – –
Hunt & Reffert 2023 1.19 0.83 0.88 208 – – – –
Just et al. 2023 – – – 248 – 22 – –
Joshi et al. 2016 1.49 1.31 – 248 – 191 – –
Kharchenko et al. 2016 1.49 1.31 – 248 – – – –
Kharchenko et al. 2013 1.49 1.31 – 248 – – – –
Piskunov et al. 2008 1.80 0.69 – 126 – – – –
Kharchenko et al. 2005 1.80 0.69 – 126 – – – –
Dias et al. 2002 1.80 0.69 – 126 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWNU 3094 87.3 272.4 -24.54 0.82 0.38 -2.4 -14.89 0.01

πŸ’‘ Note: The % column shows the percentage of members that ESO 521 38 shares with each listed object.

Visualization
ℹ️
ESO 521 38 UCC
ESO 521 38 HUNT23
Galactocentric position diagram