Melotte 73
(Collinder 157; NGC 2432; FSR 1267; MWSC 1310; OCL 620; ESO 560 06; FoF 378)
- CN 0.83 Rich
- Cdens 1.0 Very dense
- CC3 0.75 High quality
- Clit 1.0 Very well-studied
- Cdup 1.0 Unique
Overview
Data
| Reference | Year | RA [deg] | DEC [deg] | Plx [mas] | pmRA [mas/yr] | pmDE [mas/yr] | Rv [km/s] |
|---|---|---|---|---|---|---|---|
| UCC | – | 115.223 | -19.076 | 0.524 | -0.689 | 1.622 | 49.641 |
| Hu & Soubiran | 2025 | 115.229 | -19.085 | – | – | – | – |
| Almeida et al. | 2025 | 115.222 | -19.086 | – | – | – | – |
| Hunt & Reffert | 2024 | 115.22 | -19.075 | 0.512 | -0.691 | 1.631 | 44.935 |
| Cavallo et al. | 2024 | 115.229 | -19.085 | 0.52 | – | – | – |
| Hunt & Reffert | 2023 | 115.22 | -19.075 | 0.512 | -0.691 | 1.631 | 44.935 |
| Just et al. | 2023 | 115.219 | -19.083 | – | – | – | – |
| Dias et al. | 2021 | 115.222 | -19.086 | 0.493 | -0.69 | 1.611 | 51.48 |
| Cantat-Gaudin et al. | 2020 | 115.223 | -19.078 | 0.493 | -0.684 | 1.614 | – |
| Liu & Pang | 2019 | 115.218 | -19.084 | 0.498 | -0.725 | 1.616 | – |
| Bossini et al. | 2019 | 115.223 | -19.078 | – | – | – | – |
| Soubiran et al. | 2018 | 115.223 | -19.078 | – | – | – | 51.63 |
| Bica et al. | 2019 | 115.217 | -19.066 | – | – | – | – |
| Cantat-Gaudin et al. | 2018 | 115.223 | -19.078 | 0.493 | -0.684 | 1.614 | – |
| Loktin & Popova | 2017 | 115.23 | -19.082 | – | -3.128 | 4.184 | 14.4 |
| Kharchenko et al. | 2016 | 115.219 | -19.083 | – | – | – | – |
| Kharchenko et al. | 2013 | 115.225 | -19.085 | – | -2.65 | 3.62 | 14.4 |
| Piskunov et al. | 2008 | 115.316 | -19.151 | – | – | – | – |
| Kharchenko et al. | 2007 | 115.21 | -19.08 | – | 0.2 | – | 14.4 |
| Froebrich et al. | 2007 | 115.237 | -19.073 | – | – | – | – |
| Kharchenko et al. | 2005 | 115.32 | -19.15 | – | -3.68 | 1.62 | 14.4 |
| Kharchenko et al. | 2003 | 115.29 | -19.12 | – | -5.64 | 1.27 | – |
| Dias et al. | 2002 | 115.221 | -19.077 | – | -0.85 | 1.42 | 14.4 |
💡 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 |
|---|---|---|---|---|---|---|---|---|---|
| Hu & Soubiran | 2025 | – | – | – | – | -0.140* | – | – | – |
| Almeida et al. | 2025 | 1.65 | 0.73 | – | 935 | – | 640 | – | – |
| Hunt & Reffert | 2024 | – | – | – | – | – | 1101* | – | – |
| Cavallo et al. | 2024 | 1.96 | 0.97 | – | 776 | 0.160 | – | – | – |
| Hunt & Reffert | 2023 | 1.75 | 0.43 | 1.02 | 975 | – | – | – | – |
| Just et al. | 2023 | – | – | – | 447 | – | 140 | – | – |
| Dias et al. | 2021 | 1.65 | 0.73 | – | 935 | 0.014 | – | – | – |
| Cantat-Gaudin et al. | 2020 | 1.91 | 0.72 | – | 692 | – | – | – | – |
| Liu & Pang | 2019 | – | – | – | 955 | 0.000 | – | – | – |
| Bossini et al. | 2019 | 1.98 | 0.74 | – | 705 | 0.000 | – | – | – |
| Soubiran et al. | 2018 | 1.92 | – | – | – | – | – | – | – |
| Cantat-Gaudin et al. | 2018 | 1.92 | – | – | – | – | – | – | – |
| Loktin & Popova | 2017 | 2.47 | 0.06 | – | 851 | – | – | – | – |
| Kharchenko et al. | 2016 | 1.59 | 0.90 | – | 447 | – | – | – | – |
| Kharchenko et al. | 2013 | 1.59 | 0.90 | – | 447 | – | – | – | – |
| Piskunov et al. | 2008 | 2.03 | 0.37 | – | 151 | – | – | – | – |
| Kharchenko et al. | 2005 | 2.03 | 0.37 | – | 151 | – | – | – | – |
| Kharchenko et al. | 2003 | 1.91 | 0.71 | – | – | – | – | – | – |
| Dias et al. | 2002 | 1.90 | 0.71 | – | 501 | – | – | – | – |
💡 Note: The parameters are sometimes
transformed from their original values to match the format of the
columns shown here, see FAQ.
The columns DAv, Bfr, BSS correspond to differential
extinction, binary fraction, and blue stragglers, respectively.
BSS values can be listed as fractions or integers.
(*): indicates that this parameter is
assigned more than one value in the corresponding reference.


Almeida et al. (2025): Mass determination: good fit. Isochrone match: good fit.
Cavallo et al. (2024): Gold sample.