Melotte 71

(Collinder 155; MWSC 1287; OCL 587; FSR 1222; FoF 585)

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1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
C3 classification AA
Number of members (P>50%) 1474
Radius (P>50% members) 7.0 [arcmin]
  • CN 1.0 Very rich
  • Cdens 1.0 Very dense
  • CC3 1.0 Very 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¸
Melotte 71 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a moderate distance, above the mid-plane, affected by low extinction. It is catalogued as a massive, near-solar metallicity, intermediate-age cluster, but with a large variance across recent sources for the age and metallicity parameters (see Parameters). It is very well-studied in the literature.
Relatively close Low extinction Massive Near-solar metallicity Intermediate age

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

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Melotte 71 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC – 114.381 -12.069 0.437 -2.388 4.203 50.312
Nizovkina et al. 2025 114.378 -12.058 – – – –
Li et al. 2025 114.383 -12.065 0.434 -2.446 4.21 –
Hu & Soubiran 2025 114.371 -12.071 – – – –
Wei et al. 2025 114.381 -12.069 0.44 -2.369 4.2 –
Carrasco-Varela et al. 2025 114.593 -12.125 – – – –
Almeida et al. 2025 114.378 -12.068 – – – –
Hunt & Reffert 2024 114.378 -12.058 0.439 -2.389 4.216 48.421
Cavallo et al. 2024 114.372 -12.071 0.439 – – –
Hunt & Reffert 2023 114.378 -12.058 0.439 -2.389 4.216 48.421
Cordoni et al. 2023 114.378 -12.068 0.437 -2.444 4.208 –
Just et al. 2023 114.384 -12.053 – – – –
Jaehnig et al. 2021 114.386 -12.064 0.465 -2.447 4.204 –
Rain et al. 2021 114.383 -12.065 0.434 -2.446 4.21 –
Dias et al. 2021 114.378 -12.068 0.437 -2.444 4.208 51.369
Cantat-Gaudin et al. 2020 114.383 -12.065 0.434 -2.446 4.21 –
Donor et al. 2020 114.39 -12.055 – -2.38 4.13 50.5
Cantat-Gaudin & Anders 2020 114.383 -12.065 0.434 -2.446 4.21 –
Liu & Pang 2019 114.376 -12.07 0.443 -2.445 4.201 –
Bossini et al. 2019 114.383 -12.065 – – – –
Soubiran et al. 2018 114.383 -12.065 – – – 51.26
Bica et al. 2019 114.386 -12.062 – – – –
Cantat-Gaudin et al. 2018 114.383 -12.065 0.434 -2.446 4.21 –
Loktin & Popova 2017 114.39 -12.055 – -1.021 4.298 50.1
Kharchenko et al. 2016 114.384 -12.053 – – – –
Dias et al. 2014 114.375 -12.067 – -5.07 5.76 0.55
Kharchenko et al. 2013 114.39 -12.055 – -0.94 4.72 50.1
Gozha et al. 2012 114.375 -12.067 – – – –
Piskunov et al. 2008 114.369 -12.072 – – – –
Kharchenko et al. 2007 114.37 -12.07 – 0.15 – –
van den Bergh 2006 114.334 -12.098 – – – –
Kharchenko et al. 2005 114.37 -12.07 – -3.59 6.26 –
Kharchenko et al. 2003 114.37 -12.06 – -3.3 5.54 –
Chen et al. 2003 114.373 -12.08 – – – –
Dias et al. 2002 114.375 -12.067 – -5.07 5.76 0.55

💡 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
Nizovkina et al. 2025 1.98* 0.51* – 1352* -0.334* – – –
Li et al. 2025 2.11 0.53 – 1330 -0.162 – – –
Hu & Soubiran 2025 – – – – -0.200* – – –
Wei et al. 2025 2.66 0.66 – 977 0.000 1866 0.72 –
Carrasco-Varela et al. 2025 1.93 0.50 – 1327 -0.200 – – 0.08*
Almeida et al. 2025 1.93 0.56 – 1327 – 2068 – –
Hunt & Reffert 2024 – – – – – 4184* – –
Cavallo et al. 2024 2.04 0.51 – 1413 -0.030 – – –
Hunt & Reffert 2023 2.08 0.17 0.43 1291 – – – –
Cordoni et al. 2023 1.93 0.56 – 1327 -0.154 2881 0.36 0.05
Just et al. 2023 – – – 944 – 2118 – –
Jaehnig et al. 2021 2.14* – – – – – – –
Rain et al. 2021 2.16 0.34 – 234 – – – 5
Dias et al. 2021 1.93 0.56 – 1327 -0.154 – – –
Cantat-Gaudin et al. 2020 2.14 0.38 – 977 – – – –
Donor et al. 2020 – – – – -0.130 – – –
Cantat-Gaudin & Anders 2020 2.16 – – – – – – –
Liu & Pang 2019 – – – 1150 0.000 – – –
Bossini et al. 2019 2.04 0.48 – 1294 -0.270 – – –
Soubiran et al. 2018 2.16 – – – – – – –
Cantat-Gaudin et al. 2018 2.16 – – – – – – –
Loktin & Popova 2017 3.16 0.33 – 272 – – – –
Kharchenko et al. 2016 2.47 0.32 – 944 – – – –
Kharchenko et al. 2013 2.47 0.32 – 944 -0.220 – – –
Gozha et al. 2012 3.15 – – 235 -0.320 1047 – –
Piskunov et al. 2008 3.15 0.34 – 234 – – – –
van den Bergh 2006 3.15 0.34 – 234 – – – –
Kharchenko et al. 2005 3.15 0.34 – 234 – – – –
Kharchenko et al. 2003 3.12 0.34 – – – – – –
Chen et al. 2003 3.15 0.35 – 230 -0.300* – – –
Dias et al. 2002 3.15 0.35 – 235 -0.320 – – –

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

Visualization
ℹī¸
Melotte 71 UCC
Melotte 71 HUNT23
Melotte 71 CANTAT20
Galactocentric position diagram