ESO 261 03

(MWSC 1634)

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0.61 UTI
0.48
CN
0.94
Cdens
0.75
CC3
0.44
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 48
Radius (P>50% members) 7.4 [arcmin]
  • CN 0.48 Poorly populated
  • Cdens 0.94 Very dense
  • CC3 0.75 High quality
  • Clit 0.44 Poorly 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 261 03 is a poorly populated, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, near the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster (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.

Relatively close Moderate extinction Near-solar metallicity Intermediate age

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for ESO 261 03 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 – 137.843 -47.038 0.675 -5.039 3.555 5.136
Hunt & Reffert 2024 137.831 -47.026 0.672 -5.049 3.549 6.394
Cavallo et al. 2024 137.8 -47.03 0.676 – – –
Hunt & Reffert 2023 137.831 -47.026 0.672 -5.049 3.549 6.394
Just et al. 2023 137.823 -47.057 – – – –
Kharchenko et al. 2016 137.823 -47.057 – – – –
Dias et al. 2014 137.846 -47.04 – -2.88 3.17 –
Kharchenko et al. 2013 137.827 -47.06 – -3.5 7.01 –

💡 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
Hunt & Reffert 2024 – – – – – 245* – –
Cavallo et al. 2024 1.85 2.79 – 112 0.440 – – –
Hunt & Reffert 2023 1.40 3.08 2.65 74 – – – –
Just et al. 2023 – – – 412 – 63 – –
Kharchenko et al. 2016 1.06 1.62 – 412 – – – –
Kharchenko et al. 2013 1.06 1.62 – 412 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWNU 2315 85.4 137.86 -47.05 0.68 -5.04 3.56 5.14 0.01

💡 Note: The % column shows the percentage of members that ESO 261 03 shares with each listed object.

Visualization
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ESO 261 03 UCC
ESO 261 03 HUNT23
Galactocentric position diagram