Melotte 42
(Collinder 86; NGC 2192; OCL 437; MWSC 820; FoF 641)
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UTI:
UCC Trust Index
Melotte 42 is a rich, very dense object of high C3 quality. It is very well-studied in the literature. This object shares a very small percentage of members with a later reported entry. |
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| C3 | N_50 |
r_50 |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AB | 337 | 3.4 | ||||||||||||
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 93.821 | 39.855 | – | 0.18 | -5.31 | – |
| Kharchenko et al. (2012) | 93.82 | 39.868 | – | -2.68 | -3.32 | – |
| Loktin & Popova (2017) | 93.825 | 39.856 | – | 0.18 | -5.31 | – |
| Bica et al. (2019) | 93.79 | 39.848 | – | – | – | – |
| Liu & Pang (2019) | 93.835 | 39.826 | 0.25 | 0.307 | -1.908 | – |
| Cantat-Gaudin et al. (2020) | 93.819 | 39.846 | 0.223 | 0.193 | -1.962 | – |
| Dias et al. (2021) | 93.824 | 39.843 | 0.219 | 0.189 | -1.977 | – |
| Jaehnig et al. (2021) | 93.816 | 39.856 | 0.268 | 0.219 | -1.978 | – |
| Hunt & Reffert (2023) | 93.822 | 39.843 | 0.228 | 0.189 | -1.969 | 20.754 |
| Cavallo et al. (2024) | 93.82 | 39.84 | 0.23 | – | – | – |
| Hunt & Reffert (2024) | 93.822 | 39.843 | 0.228 | 0.189 | -1.969 | 20.754 |
| Hu & Soubiran (2025) | 93.82 | 39.84 | – | – | – | – |
| UCC | 93.823 | 39.844 | 0.233 | 0.188 | -1.964 | 15.511 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.16, Dist=3467.0, Age=9.15, [Fe/H]=-0.31 |
| Kharchenko et al. (2012) | e_bv=0.1, distance=3501, log_age=9.25, metallicity=-0.31 |
| Loktin & Popova (2017) | E(B-V)=0.17, Dmod=12.88, logt=8.76 |
| Liu & Pang (2019) | Age=1.45, Z=-0.25 |
| Cantat-Gaudin et al. (2020) | AVNN=0.43, DMNN=12.78, AgeNN=8.99 |
| Dias et al. (2021) | Av=0.613, Dist=3485, logage=9.113, [Fe/H]=-0.181 |
| Hunt & Reffert (2023) | AV50=0.19, diffAV50=0.219, MOD50=13.08, logAge50=9.029 |
| Cavallo et al. (2024) | AV50=0.67, dMod50=12.5, logAge50=9.12, [Fe/H]50=-0.24 |
| Hunt & Reffert (2024) | MassJ=1770.82 |
| Hu & Soubiran (2025) | MA22=-0.28, MA23f=-0.43, MA23g=-0.24, MZ23=-0.29, MK24=-0.31, MF24=-0.25 |
Search coordinates in Bayestar19
Cluster region
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| OC 0291 | 8.6 | 93.84 | 39.85 | 0.25 | 0.17 | -1.96 | 18.57 | 0.0 |