Melotte 239
(Collinder 445; IC 1434; OCL 223; FSR 0343; MWSC 3592; FoF 165)
Summary
Melotte 239 is a very rich, very dense object of very high C3 quality. It is located at a moderate distance from the Sun, below the mid-plane. It is very well-studied in the literature.
This object shares a very small percentage of members with 2 later reported entries.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 332.642 | 52.828 | – | -3.06 | -0.52 | – |
| Kharchenko et al. (2012) | 332.603 | 52.86 | – | -6.52 | -3.46 | – |
| Loktin & Popova (2017) | 332.595 | 52.86 | – | -5.587 | -2.617 | – |
| Cantat-Gaudin et al. (2018) | 332.625 | 52.858 | 0.278 | -3.904 | -3.328 | – |
| Bica et al. (2019) | 332.588 | 52.854 | – | – | – | – |
| Soubiran et al. (2018) | 332.625 | 52.858 | – | – | – | -60.12 |
| Liu & Pang (2019) | 332.619 | 52.872 | 0.287 | -3.843 | -3.327 | – |
| Cantat-Gaudin et al. (2020) | 332.625 | 52.858 | 0.278 | -3.904 | -3.328 | – |
| Dias et al. (2021) | 332.627 | 52.856 | 0.284 | -3.919 | -3.323 | -60.435 |
| Hunt & Reffert (2023) | 332.625 | 52.862 | 0.28 | -3.882 | -3.356 | -69.239 |
| Cavallo et al. (2024) | 332.626 | 52.855 | 0.278 | – | – | – |
| Hunt & Reffert (2024) | 332.625 | 52.862 | 0.28 | -3.882 | -3.356 | -69.239 |
| Almeida et al. (2025) | 332.627 | 52.856 | – | – | – | – |
| UCC | 332.623 | 52.856 | 0.276 | -3.879 | -3.357 | -62.145 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.13, Dist=2600.0, Age=8.9 |
| Kharchenko et al. (2012) | e_bv=0.521, distance=3210, log_age=8.245 |
| Loktin & Popova (2017) | E(B-V)=0.07, Dist=3777, logt=8.81 |
| Cantat-Gaudin et al. (2018) | dmode=3253.3 |
| Soubiran et al. (2018) | dmode=3253.3 |
| Liu & Pang (2019) | Age=0.562, Z=0.5 |
| Cantat-Gaudin et al. (2020) | AVNN=0.58, DistPc=3481.0, AgeNN=8.44 |
| Dias et al. (2021) | Av=1.406, Dist=2802, logage=8.117, [Fe/H]=-0.158 |
| Hunt & Reffert (2023) | AV50=1.159, diffAV50=2.309, MOD50=12.734, logAge50=8.467 |
| Cavallo et al. (2024) | AV50=1.66, dMod50=12.8, logAge50=8.1, [Fe/H]50=0.06 |
| Hunt & Reffert (2024) | MassJ=3959.16, MassTot=4310.38 |
| Almeida et al. (2025) | AV=1.406, Dist=2802, logAge=8.117, MassRk=1537.1 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| OC 0162 | 3.8 | 332.68 | 52.9 | 0.31 | -3.91 | -3.28 | – | 0.0 |
| OC 0163 | 3.8 | 332.69 | 52.89 | 0.27 | -3.84 | -3.34 | – | 0.0 |