Melotte 26

(Collinder 54; NGC 1647; MWSC 416; OCL 457; FoF 2261)

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) 1337
Stellar density (N50/rad) 73.2 [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
đŸ“Ĩ Members 📊 Colab đŸ”Ŧ Bayestar19 MOCAMOCA 🔍 CDS 🔍 Simbad 🔍 CDS (Îą, δ) 🔍 Simbad (Îą, δ)

Overview
ℹī¸
Melotte 26 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a close distance, below the mid-plane, affected by moderate extinction. It is catalogued as a massive, 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.

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

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 26 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 71.473 19.09 1.695 -1.082 -1.548 -6.717
Li et al. 2025 71.481 19.079 1.675 -1.057 -1.502 –
Wei et al. 2025 71.478 19.08 1.697 -1.079 -1.547 –
Almeida et al. 2025 71.478 19.064 – – – –
Alfonso et al. 2024 71.479 19.092 1.659 -1.082 -1.545 –
Zhang et al. 2024 71.488 19.163 – – – –
Hunt & Reffert 2024 71.488 19.163 1.697 -1.091 -1.531 -7.681
Cavallo et al. 2024 71.477 19.079 1.693 – – –
Hunt & Reffert 2023 71.488 19.163 1.697 -1.091 -1.531 -7.681
Just et al. 2023 71.489 19.17 – – – –
He et al. 2022 71.482 19.1 1.693 -1.08 -1.542 –
Tarricq et al. 2022 71.527 19.128 1.682 -1.074 -1.541 –
Jaehnig et al. 2021 71.491 19.094 1.713 -1.047 -1.496 –
Rain et al. 2021 71.481 19.079 1.675 -1.057 -1.502 –
Dias et al. 2021 71.478 19.064 1.67 -1.045 -1.525 -6.633
Cantat-Gaudin et al. 2020 71.481 19.079 1.675 -1.057 -1.502 –
Cantat-Gaudin & Anders 2020 71.481 19.079 1.675 -1.057 -1.502 –
Liu & Pang 2019 71.466 19.099 1.698 -1.036 -1.503 –
Soubiran et al. 2018 71.481 19.079 – – – -6.69
Bica et al. 2019 71.507 19.083 – – – –
Cantat-Gaudin et al. 2018 71.481 19.079 1.675 -1.057 -1.502 –
Loktin & Popova 2017 71.475 19.115 – 0.014 -7.416 -6.1
Kharchenko et al. 2016 71.489 19.17 – – – –
Dias et al. 2014 71.479 19.115 – -0.74 -0.57 –
Kharchenko et al. 2013 71.497 19.17 – -1.94 -3.56 -6.1
Gozha et al. 2012 71.479 19.115 – – – –
Piskunov et al. 2008 71.468 19.115 – – – –
Kharchenko et al. 2007 71.47 19.11 – 0.63 – -6.12
Piskunov et al. 2007 71.468 19.115 – – – –
van den Bergh 2006 71.475 19.117 – – – –
Kharchenko et al. 2005 71.47 19.11 – -1.43 -1.83 –
Kharchenko et al. 2003 71.5 19.13 – -1.71 -1.76 –
Chen et al. 2003 71.495 19.05 – -1.37 -1.02 -2.0
Dias et al. 2002 71.479 19.115 – -0.74 -0.57 -7.02
Dambis 1999 71.479 19.115 – – – –

💡 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– 0.57 1.15 1.58 144 0.119 1047 0.46 0.0
Li et al. 2025 0.55 1.18 – 336 0.041 – – –
Wei et al. 2025 1.06 1.60 – 85 0.250 1272 0.46 –
Almeida et al. 2025 0.58 1.35 – 256 – 1279 – –
Alfonso et al. 2024 0.64 0.64 – 1126 0.119 – – –
Zhang et al. 2024 – – – – -0.005(1) – – –
Hunt & Reffert 2024 – – – – – 1867(1) – –
Cavallo et al. 2024 0.61 1.36 – 145 0.500 – – –
Hunt & Reffert 2023 0.56 1.35 1.58 117 – – – –
Just et al. 2023 – – – 200 – 240 – –
He et al. 2022 – 1.70 – 79 – – – –
Tarricq et al. 2022 0.62 – – 389 – – – –
Jaehnig et al. 2021 0.58(1) – – – – – – –
Rain et al. 2021 0.59 1.15 – 141 – – – 0
Dias et al. 2021 0.58 1.35 – 256 0.119 – – –
Cantat-Gaudin et al. 2020 0.64 0.64 – 363 – – – –
Cantat-Gaudin & Anders 2020 0.59 – – – – – – –
Liu & Pang 2019 – – – 98 0.500 – – –
Soubiran et al. 2018 0.59 – – – – – – –
Cantat-Gaudin et al. 2018 0.59 – – – – – – –
Loktin & Popova 2017 0.54 1.19 – 144 – – – –
Kharchenko et al. 2016 0.57 1.10 – 200 – – – –
Kharchenko et al. 2013 0.57 1.10 – 200 – – – –
Gozha et al. 2012 0.54 – – 144 – 347 – –
Piskunov et al. 2008 0.54 0.99 – 91 – 1047(1) – –
Piskunov et al. 2007 0.54 0.99 – 91 – 345 – –
van den Bergh 2006 0.54 1.15 – 145 – – – –
Kharchenko et al. 2005 0.54 0.99 – 91 – – – –
Kharchenko et al. 2003 0.54 1.15 – – – – – –
Chen et al. 2003 0.54 – – 140 – – – –
Dias et al. 2002 0.54 1.15 – 144 – – – –
Dambis 1999 0.41 1.08 – 158 – – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
LP 13 1.9 71.08 19.31 1.71 -1.12 -1.42 -5.1 0.0

💡 Note: The % column shows the percentage of members that Melotte 26 shares with each listed object.

Visualization
ℹī¸
Melotte 26 UCC
Melotte 26 HUNT23
Melotte 26 CANTAT20
Galactocentric position diagram