Melotte 78

(Collinder 165; VDBH 13; NGC 2477; MWSC 1363; OCL 720; vdBergh-Hagen 13; ESO 311 17; FSR 1369; FoF 35)

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) 3687
Stellar density (N50/rad) 187.7 [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 78 is a very rich, very dense object of very high C3 quality. Its parallax locates it at a relatively close distance, below 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 mass parameter (see Parameters). It is very well-studied in the literature.

Note: This object contains blue stragglers according to at least one source.

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.

Cavallo et al. (2024)
Gold sample.

Data
πŸ” Search references for Melotte 78 in: SciX Simbad
ℹ️
Reference Year RA [deg] DEC [deg] Plx [mas] pmRA [mas/yr] pmDE [mas/yr] Rv [km/s]
UCC 99999– 118.049 -38.539 0.689 -2.43 0.899 7.515
Li et al. 2025 118.046 -38.537 0.665 -2.449 0.87 –
Hu & Soubiran 2025 118.049 -38.54 – – – –
Wei et al. 2025 118.045 -38.538 0.69 -2.426 0.905 –
Carrasco-Varela et al. 2025 118.197 -38.612 – – – –
Almeida et al. 2025 118.044 -38.537 – – – –
Hunt & Reffert 2024 118.045 -38.534 0.692 -2.427 0.908 7.926
Cavallo et al. 2024 118.049 -38.54 0.691 – – –
Hunt & Reffert 2023 118.045 -38.534 0.692 -2.427 0.908 7.926
Just et al. 2023 118.031 -38.528 – – – –
Tarricq et al. 2022 118.055 -38.535 0.687 -2.428 0.901 –
Jaehnig et al. 2021 118.042 -38.539 0.694 -2.457 0.874 –
Rain et al. 2021 118.046 -38.537 0.665 -2.449 0.87 –
Dias et al. 2021 118.044 -38.537 0.667 -2.455 0.866 8.713
Cantat-Gaudin et al. 2020 118.046 -38.537 0.665 -2.449 0.87 –
SΓ‘nchez et al. 2020 118.042 -38.53 – -2.349 1.031 –
Cantat-Gaudin & Anders 2020 118.046 -38.537 0.665 -2.449 0.87 –
Liu & Pang 2019 118.054 -38.543 0.672 -2.442 0.866 –
Soubiran et al. 2018 118.046 -38.537 – – – 7.9
Bica et al. 2019 118.048 -38.523 – – – –
Cantat-Gaudin et al. 2018 118.046 -38.537 0.665 -2.449 0.87 –
Loktin & Popova 2017 118.035 -38.53 – -4.247 6.721 7.3
Kharchenko et al. 2016 118.031 -38.528 – – – –
Dias et al. 2014 118.042 -38.53 – -0.58 1.81 –
Kharchenko et al. 2013 118.035 -38.53 – -0.5 2.0 7.3
Gozha et al. 2012 118.042 -38.53 – – – –
Piskunov et al. 2008 118.037 -38.528 – – – –
Kharchenko et al. 2007 118.03 -38.53 – 0.22 – –
Piskunov et al. 2007 118.037 -38.528 – – – –
van den Bergh 2006 118.025 -38.533 – – – –
Kharchenko et al. 2005 118.03 -38.53 – -0.23 1.83 –
Kharchenko et al. 2003 118.06 -38.55 – -0.73 1.22 –
Chen et al. 2003 118.067 -38.549 – – – –
Dias et al. 2002 118.042 -38.53 – -0.58 1.81 7.26

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– 1.38 0.9 1.23 808 0.010 1091 0.7 0.05
Li et al. 2025 1.41 1.00 – 1064 0.053 – – –
Hu & Soubiran 2025 – – – – -0.080(5) – – –
Wei et al. 2025 1.99 1.27 – 955 0.000 6283 0.70 –
Carrasco-Varela et al. 2025 1.35 1.19 – 940 -0.050 – – 0.05(1)
Almeida et al. 2025 1.35 1.19 – 940 – 6154 – –
Hunt & Reffert 2024 – – – – – 12080(1) – –
Cavallo et al. 2024 1.45 1.27 – 794 0.220 – – –
Hunt & Reffert 2023 1.38 1.05 1.23 701 – – – –
Just et al. 2023 – – – 822 – 1091 – –
Tarricq et al. 2022 1.42 – – 1122 – – – –
Jaehnig et al. 2021 1.44(1) – – – – – – –
Rain et al. 2021 1.44 0.96 – 708 – – – 5
Dias et al. 2021 1.35 1.19 – 940 0.075 – – –
Cantat-Gaudin et al. 2020 1.45 0.68 – 1122 – – – –
Cantat-Gaudin & Anders 2020 1.44 – – – – – – –
Liu & Pang 2019 – – – 2240 -0.750 – – –
Soubiran et al. 2018 1.44 – – – – – – –
Cantat-Gaudin et al. 2018 1.44 – – – – – – –
Loktin & Popova 2017 1.28 0.86 – 708 – – – –
Kharchenko et al. 2016 1.45 0.90 – 822 – – – –
Kharchenko et al. 2013 1.45 0.90 – 822 -0.192 – – –
Gozha et al. 2012 1.30 – – 603 0.070 257 – –
Piskunov et al. 2008 1.22 0.87 – 407 – 308(1) – –
Piskunov et al. 2007 1.22 0.87 – 407 – 90 – –
van den Bergh 2006 1.22 0.87 – 708 – – – –
Kharchenko et al. 2005 1.22 0.87 – 407 – – – –
Kharchenko et al. 2003 1.22 0.87 – – – – – –
Chen et al. 2003 1.22 0.86 – 700 0.010(1) – – –
Dias et al. 2002 1.34 0.96 – 708 0.070 – – –

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

Cluster % RA DEC Plx pmRA pmDE Rv UTI
OC 0443 1.0 118.29 -38.89 0.69 -2.39 0.9 12.0 0.09

πŸ’‘ Note: The % column shows the percentage of members that Melotte 78 shares with each listed object.

Visualization
ℹ️
Melotte 78 UCC
Melotte 78 HUNT23
Melotte 78 CANTAT20
Galactocentric position diagram