Melotte 68

(Collinder 152; NGC 2422; MWSC 1278; M 47; OCL 596; Escorial 21; FoF 2325; OCSN 229)

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1.0 UTI
1.0
CN
1.0
Cdens
1.0
CC3
1.0
Clit
1.0
Cdup
N50 (P>50% members) 1348
Stellar density (N50/rad) 126.4 [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 68 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a very 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 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. Gold sample.

Cavallo et al. (2024)
Gold sample.

Data
🔍 Search references for Melotte 68 in: SciX Simbad
ℹī¸
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 114.14 -14.486 2.093 -7.046 1.024 34.361
Li et al. 2025 114.147 -14.489 2.07 -7.057 0.993 –
Wei et al. 2025 114.15 -14.48 2.102 -7.046 1.018 –
Almeida et al. 2025 114.142 -14.483 – – – –
Alfonso et al. 2024 114.153 -14.482 2.068 -7.046 1.026 –
Hunt & Reffert 2024 114.169 -14.493 2.1 -7.069 1.042 34.313
Cavallo et al. 2024 114.127 -14.466 2.102 – – –
Hunt & Reffert 2023 114.169 -14.493 2.1 -7.069 1.042 34.313
Cordoni et al. 2023 114.142 -14.483 2.069 -7.053 0.968 –
Qin et al. 2023 114.16 -14.49 2.1 -7.04 1.03 34.91
Just et al. 2023 114.159 -14.488 – – – –
He et al. 2022 114.13 -14.488 2.098 -7.036 1.031 –
Tarricq et al. 2022 114.169 -14.51 2.106 -7.036 1.055 –
Jaehnig et al. 2021 114.156 -14.495 2.098 -7.042 1.003 –
Rain et al. 2021 114.147 -14.489 2.07 -7.057 0.993 –
Dias et al. 2021 114.142 -14.483 2.069 -7.053 0.968 35.75
Cantat-Gaudin et al. 2020 114.147 -14.489 2.07 -7.057 0.993 –
Cantat-Gaudin & Anders 2020 114.147 -14.489 2.07 -7.057 0.993 –
Liu & Pang 2019 114.148 -14.483 2.063 -7.07 0.989 –
Bossini et al. 2019 114.147 -14.489 – – – –
Soubiran et al. 2018 114.147 -14.489 – – – 36.18
Bica et al. 2019 114.134 -14.504 – – – –
Cantat-Gaudin et al. 2018 114.147 -14.489 2.07 -7.057 0.993 –
Loktin & Popova 2017 114.15 -14.482 – -5.276 7.024 36.7
Kharchenko et al. 2016 114.159 -14.488 – – – –
Dias et al. 2014 114.146 -14.483 – -3.35 0.77 –
Kharchenko et al. 2013 114.165 -14.49 – -6.63 2.11 36.7
Gozha et al. 2012 114.146 -14.483 – – – –
Piskunov et al. 2008 114.142 -14.476 – – – –
Kharchenko et al. 2007 114.15 -14.48 – 0.51 – 36.72
Piskunov et al. 2007 114.142 -14.476 – – – –
van den Bergh 2006 114.15 -14.483 – – – –
Kharchenko et al. 2005 114.15 -14.48 – -6.91 1.87 36.72
Kharchenko et al. 2003 114.15 -14.48 – -6.74 2.17 –
Dias et al. 2002 114.146 -14.483 – -7.15 1.1 25.92
Dambis 1999 114.146 -14.483 – – – –

💡 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– 0.485 0.22 0.6 110 0.132 427 0.2 0.0
Li et al. 2025 0.49 0.33 – 108 0.135 – – –
Wei et al. 2025 0.65 0.83 – 50 -0.250 785 0.19 –
Almeida et al. 2025 0.48 0.31 – 155 – 625 – –
Alfonso et al. 2024 0.51 0.18 – 84 0.134 – – –
Hunt & Reffert 2024 – – – – – 1356(1) – –
Cavallo et al. 2024 0.49 0.52 – 81 0.190 – – –
Hunt & Reffert 2023 0.45 0.16 0.60 109 – – – –
Cordoni et al. 2023 0.48 0.31 – 155 0.132 897 0.21 0.00
Qin et al. 2023 0.48 0.22 – 158 – – – –
Just et al. 2023 – – – 132 – 70 – –
He et al. 2022 – 0.40 – 79 – – – –
Tarricq et al. 2022 0.50 – – 112 – – – –
Jaehnig et al. 2021 0.47(1) – – – – – – –
Rain et al. 2021 0.48 0.22 – 72 – – – 1
Dias et al. 2021 0.48 0.31 – 155 0.132 – – –
Cantat-Gaudin et al. 2020 0.51 0.18 – 110 – – – –
Cantat-Gaudin & Anders 2020 0.48 – – – – – – –
Liu & Pang 2019 – – – 58 0.250 – – –
Bossini et al. 2019 0.45 0.20 – 127 0.090 – – –
Soubiran et al. 2018 0.48 – – – – – – –
Cantat-Gaudin et al. 2018 0.48 – – – – – – –
Loktin & Popova 2017 0.49 0.22 – 72 – – – –
Kharchenko et al. 2016 0.47 0.32 – 132 – – – –
Kharchenko et al. 2013 0.47 0.32 – 132 0.008 – – –
Gozha et al. 2012 0.49 – – 73 0.110 229 – –
Piskunov et al. 2008 0.49 0.22 – 132 – 155(1) – –
Piskunov et al. 2007 0.49 0.22 – 132 – 77 – –
van den Bergh 2006 0.49 0.22 – 72 – – – –
Kharchenko et al. 2005 0.49 0.22 – 132 – – – –
Kharchenko et al. 2003 0.50 0.22 – – – – – –
Dias et al. 2002 0.49 0.22 – 73 0.110 – – –
Dambis 1999 0.42 0.27 – 100 – – – –

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

Visualization
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Melotte 68 UCC
Melotte 68 HUNT23
Melotte 68 CANTAT20
Galactocentric position diagram