Melotte 54

(Collinder 119; NGC 2301; FSR 1071; MWSC 1000; OCL 540; FoF 2215)

Click to load Aladin Lite
1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 1134
Stellar density (N50/rad) 85.6 [N/pc2]
C3 classification AA
  • 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
πŸ“₯ Members πŸ“Š Colab πŸ”¬ Bayestar19 MOCAMOCA πŸ” CDS πŸ” Simbad πŸ” CDS (Ξ±, Ξ΄) πŸ” Simbad (Ξ±, Ξ΄)

Overview
ℹ️
Melotte 54 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a 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 age, metallicity, and mass parameters (see Parameters). It is very well-studied in the literature.

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

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Melotte 54 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 102.938 0.469 1.143 -1.37 -2.191 25.091
Li et al. 2025 102.943 0.465 1.135 -1.367 -2.179 –
Wei et al. 2025 102.942 0.475 1.153 -1.356 -2.189 –
Almeida et al. 2025 102.951 0.472 – – – –
Alfonso et al. 2024 102.942 0.477 1.111 -1.357 -2.188 –
Zhang et al. 2024 102.937 0.462 – – – –
Hunt & Reffert 2024 102.937 0.462 1.149 -1.368 -2.185 25.8
Cavallo et al. 2024 102.957 0.476 1.148 – – –
Hunt & Reffert 2023 102.937 0.462 1.149 -1.368 -2.185 25.8
Almeida et al. 2023 102.947 0.469 – – – –
Just et al. 2023 102.938 0.467 – – – –
He et al. 2022 102.948 0.474 1.151 -1.361 -2.181 –
Tarricq et al. 2022 102.944 0.454 1.15 -1.355 -2.193 –
Jaehnig et al. 2021 102.943 0.461 1.169 -1.336 -2.183 –
Rain et al. 2021 102.943 0.465 1.135 -1.367 -2.179 –
Dias et al. 2021 102.951 0.472 1.135 -1.369 -2.188 25.732
Cantat-Gaudin et al. 2020 102.943 0.465 1.135 -1.367 -2.179 –
SΓ‘nchez et al. 2020 102.938 0.46 – -1.383 -2.002 –
Cantat-Gaudin & Anders 2020 102.943 0.465 1.135 -1.367 -2.179 –
Liu & Pang 2019 102.965 0.464 1.132 -1.364 -2.18 –
Soubiran et al. 2018 102.943 0.465 – – – 26.53
Bica et al. 2019 102.93 0.476 – – – –
Cantat-Gaudin et al. 2018 102.943 0.465 1.135 -1.367 -2.179 –
Loktin & Popova 2017 102.945 0.46 – -0.052 -1.181 39.6
Kharchenko et al. 2016 102.938 0.467 – – – –
Dias et al. 2014 102.937 0.46 – -0.83 -2.76 –
Kharchenko et al. 2013 102.945 0.465 – -0.71 -4.07 39.6
Gozha et al. 2012 102.938 0.46 – – – –
Piskunov et al. 2008 102.939 0.459 – – – –
Kharchenko et al. 2007 102.94 0.46 – 0.25 – 39.65
Piskunov et al. 2007 102.939 0.459 – – – –
Froebrich et al. 2007 102.846 0.561 – – – –
van den Bergh 2006 102.95 0.467 – – – –
Kharchenko et al. 2005 102.94 0.46 – -1.5 -4.35 62.0
Kharchenko et al. 2003 102.93 0.46 – -1.4 -5.01 –
Chen et al. 2003 102.962 0.448 – -2.31 -3.31 21.2
Dias et al. 2002 102.938 0.46 – -0.83 -2.76 13.54

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– 0.86 0.1 0.53 185 0.060 418 0.44 0.0
Li et al. 2025 0.85 0.18 – 259 0.050 – – –
Wei et al. 2025 0.86 0.17 – 98 0.250 1127 0.53 –
Almeida et al. 2025 0.85 0.23 – 185 – 1055 – –
Alfonso et al. 2024 0.86 0.08 – 272 0.059 – – –
Zhang et al. 2024 – – – – -0.102(1) – – –
Hunt & Reffert 2024 – – – – – 1498(1) – –
Cavallo et al. 2024 0.86 0.23 – 145 0.190 – – –
Hunt & Reffert 2023 0.82 0.12 0.53 139 – – – –
Almeida et al. 2023 0.83 0.25 – 202 -0.031 725(1) 0.35 –
Just et al. 2023 – – – 224 – 33 – –
He et al. 2022 – 0.40 – 79 – – – –
Tarricq et al. 2022 0.83 – – 209 – – – –
Jaehnig et al. 2021 0.86(1) – – – – – – –
Rain et al. 2021 0.86 0.09 – 158 – – – 0
Dias et al. 2021 0.85 0.23 – 185 0.057 – – –
Cantat-Gaudin et al. 2020 0.86 0.08 – 214 – – – –
Cantat-Gaudin & Anders 2020 0.86 – – – – – – –
Liu & Pang 2019 – – – 98 0.250 – – –
Soubiran et al. 2018 0.86 – – – – – – –
Cantat-Gaudin et al. 2018 0.86 – – – – – – –
Loktin & Popova 2017 0.87 0.10 – 163 – – – –
Kharchenko et al. 2016 0.81 0.19 – 224 – – – –
Kharchenko et al. 2013 0.81 0.19 – 224 0.060 – – –
Gozha et al. 2012 0.87 – – 158 0.060 112 – –
Piskunov et al. 2008 0.86 0.09 – 204 – 94(1) – –
Piskunov et al. 2007 0.86 0.09 – 204 – 38 – –
van den Bergh 2006 0.87 0.09 – 166 – – – –
Kharchenko et al. 2005 0.86 0.09 – 204 – – – –
Kharchenko et al. 2003 0.87 0.09 – – – – – –
Chen et al. 2003 0.87 0.09 – 160 0.060(1) – – –
Dias et al. 2002 0.87 0.09 – 158 0.060 – – –

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

Visualization
ℹ️
Melotte 54 UCC
Melotte 54 HUNT23
Melotte 54 CANTAT20
Galactocentric position diagram