Melotte 56
(Collinder 122; NGC 2309; MWSC 1026; OCL 557; FSR 1148)
Summary
Melotte 56 is a rich, very dense object of high C3 quality. It is located at a moderate distance from the Sun, below the mid-plane. It is well-studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 104.013 | -7.175 | – | 3.46 | -4.53 | – |
| Kharchenko et al. (2013) | 104.02 | -7.175 | – | 1.58 | -1.23 | – |
| Kharchenko et al. (2016) | 104.014 | -7.174 | – | – | – | – |
| Loktin & Popova (2017) | 104.01 | -7.175 | – | 0.452 | -0.536 | – |
| Cantat-Gaudin et al. (2018) | 104.02 | -7.18 | 0.393 | -0.495 | -0.634 | – |
| Bica et al. (2019) | 104.015 | -7.168 | – | – | – | – |
| Soubiran et al. (2018) | 104.02 | -7.18 | – | – | – | 55.64 |
| Cantat-Gaudin et al. (2020) | 104.02 | -7.18 | 0.393 | -0.495 | -0.634 | – |
| Dias et al. (2021) | 104.019 | -7.182 | 0.397 | -0.496 | -0.649 | – |
| Just et al. (2023) | 104.014 | -7.174 | – | – | – | – |
| Hunt & Reffert (2023) | 104.021 | -7.177 | 0.38 | -0.527 | -0.636 | 50.781 |
| Cavallo et al. (2024) | 104.022 | -7.182 | 0.379 | – | – | – |
| Hunt & Reffert (2024) | 104.021 | -7.177 | 0.38 | -0.527 | -0.636 | 50.781 |
| Almeida et al. (2025) | 104.019 | -7.182 | – | – | – | – |
| UCC | 104.021 | -7.176 | 0.374 | -0.53 | -0.638 | 51.82 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.35, Dist=2511.0, Age=8.4 |
| Kharchenko et al. (2013) | E(B-V)=0.354, d=2384.0, logt=8.735 |
| Kharchenko et al. (2016) | E(B-V)=0.354, d=2384.0, logt=8.735 |
| Loktin & Popova (2017) | E(B-V)=0.286, Dist=2704, logt=8.66 |
| Cantat-Gaudin et al. (2018) | dmode=2370.9 |
| Soubiran et al. (2018) | dmode=2370.9 |
| Cantat-Gaudin et al. (2020) | AVNN=1.07, DistPc=2431.0, AgeNN=8.07 |
| Dias et al. (2021) | Av=1.326, Dist=2076, logage=8.343, [Fe/H]=-0.111 |
| Just et al. (2023) | logt=8.735, logmt=2.901 |
| Hunt & Reffert (2023) | AV50=1.228, diffAV50=1.95, MOD50=11.895, logAge50=8.297 |
| Cavallo et al. (2024) | AV50=1.43, dMod50=11.96, logAge50=8.42, [Fe/H]50=0.14 |
| Hunt & Reffert (2024) | MassJ=1817.45, MassTot=1858.29 |
| Almeida et al. (2025) | AV=1.326, Dist=2076, logAge=8.343, MassRk=1105.5 |
Search coordinates in Bayestar19