ESO 275 01

(FSR 1723; MWSC 2335; MWSC 2334; FoF 1998)

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0.91 UTI
0.8
CN
1.0
Cdens
0.75
CC3
1.0
Clit
1.0
Cdup
C3 classification AB
Number of members (P>50%) 236
Radius (P>50% members) 3.6 [arcmin]
  • CN 0.8 Rich
  • Cdens 1.0 Very dense
  • CC3 0.75 High quality
  • Clit 1.0 Very well-studied
  • Cdup 1.0 Unique
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
ESO 275 01 is a rich, very dense object of high C3 quality. Its parallax locates it at a relatively close distance, above the mid-plane, affected by moderate extinction. It is catalogued as a near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age parameter (see Parameters). It is very well-studied in the literature.
Relatively close Moderate extinction Near-solar metallicity Intermediate age

Almeida et al. (2025)
Mass determination: intermediate fit. Isochrone match: good fit. Silver sample.

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for ESO 275 01 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 – 238.776 -46.014 0.63 -0.246 -1.392 -22.6
Li et al. 2025 238.769 -46.014 0.642 -0.196 -1.395 –
Almeida et al. 2025 238.769 -46.013 – – – –
Hunt & Reffert 2024 238.781 -46.011 0.625 -0.258 -1.399 -11.116
Cavallo et al. 2024 238.773 -46.015 0.627 – – –
Hunt & Reffert 2023 238.781 -46.011 0.625 -0.258 -1.399 -11.116
Almeida et al. 2023 238.776 -46.014 – – – –
Just et al. 2023 238.766 -46.009 – – – –
Tarricq et al. 2022 238.775 -46.013 0.625 -0.243 -1.397 –
Dias et al. 2021 238.769 -46.013 0.64 -0.216 -1.408 –
Cantat-Gaudin et al. 2020 238.769 -46.014 0.642 -0.196 -1.395 –
Cantat-Gaudin & Anders 2020 238.769 -46.014 0.642 -0.196 -1.395 –
Liu & Pang 2019 238.775 -46.005 0.634 -0.224 -1.393 –
Bossini et al. 2019 238.769 -46.014 – – – –
Bica et al. 2019 238.765 -46.02 – – – –
Cantat-Gaudin et al. 2018 238.769 -46.014 0.642 -0.196 -1.395 –
Kharchenko et al. 2016 238.766 -46.009 – – – –
Dias et al. 2014 238.767 -46.015 – -1.67 -1.07 –
Kharchenko et al. 2013 238.777 -46.01 – -5.43 -3.77 –
Froebrich et al. 2007 238.771 -46.014 – – – –
Dias et al. 2002 238.767 -46.015 – -1.67 -1.07 –

💡 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
Li et al. 2025 1.38 1.38 – 280 -0.050 – – –
Almeida et al. 2025 1.46 1.56 – 126 – 482 – –
Hunt & Reffert 2024 – – – – – 507* – –
Cavallo et al. 2024 1.56 1.58 – 219 0.240 – – –
Hunt & Reffert 2023 1.49 1.50 1.19 124 – – – –
Almeida et al. 2023 1.48 1.58 – 132 0.075 412* 0.47 –
Just et al. 2023 – – – 589 – 108 – –
Tarricq et al. 2022 1.44 – – 191 – – – –
Dias et al. 2021 1.46 1.56 – 126 0.083 – – –
Cantat-Gaudin et al. 2020 1.50 1.04 – 178 – – – –
Cantat-Gaudin & Anders 2020 1.49 – – – – – – –
Liu & Pang 2019 – – – 151 0.250 – – –
Bossini et al. 2019 1.46 1.08 – 283 0.000 – – –
Cantat-Gaudin et al. 2018 1.49 – – – – – – –
Kharchenko et al. 2016 1.51 0.97 – 589 – – – –
Kharchenko et al. 2013 1.51 0.97 – 589 – – – –
Dias et al. 2002 1.48 1.24 – 71 – – – –

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

Visualization
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ESO 275 01 UCC
ESO 275 01 HUNT23
ESO 275 01 CANTAT20
Galactocentric position diagram