Melotte 44
(Collinder 88; NGC 2204; ESO 556 07; FSR 1201; OCL 572; FoF 2)
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UTI:
UCC Trust Index
Melotte 44 is a very rich, very dense object of very 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 |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AA | 1095 | 6.6 | ||||||||||||
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 93.888 | -18.665 | – | 1.26 | 0.42 | 92.35 |
| Chen et al. (2003) | 93.892 | -18.659 | – | – | – | – |
| Kharchenko et al. (2012) | 93.888 | -18.66 | – | 0.5 | 3.36 | – |
| Loktin & Popova (2017) | 93.885 | -18.665 | – | 1.26 | 0.42 | 89.0 |
| Bica et al. (2019) | 93.902 | -18.655 | – | – | – | – |
| Liu & Pang (2019) | 93.877 | -18.691 | 0.252 | -0.538 | 1.975 | – |
| Cantat-Gaudin et al. (2020) | 93.882 | -18.67 | 0.209 | -0.56 | 1.964 | – |
| Donor et al. (2020) | 93.888 | -18.66 | – | -0.58 | 1.95 | 91.9 |
| Dias et al. (2021) | 93.882 | -18.679 | 0.212 | -0.556 | 1.978 | 92.492 |
| Jaehnig et al. (2021) | 93.882 | -18.665 | 0.238 | -0.554 | 1.974 | – |
| Hunt & Reffert (2023) | 93.885 | -18.671 | 0.201 | -0.579 | 1.957 | 93.888 |
| Cavallo et al. (2024) | 93.873 | -18.673 | 0.202 | – | – | – |
| Hunt & Reffert (2024) | 93.885 | -18.671 | 0.201 | -0.579 | 1.957 | 93.888 |
| Hu & Soubiran (2025) | 93.873 | -18.673 | – | – | – | – |
| UCC | 93.886 | -18.671 | 0.204 | -0.578 | 1.953 | 92.424 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.085, Dist=2629.0, Age=8.896, [Fe/H]=-0.23 |
| Chen et al. (2003) | E(B-V)=0.085, HDis=2629, Age=0.78, [Fe/H]_1=-0.33 |
| Kharchenko et al. (2012) | e_bv=0.021, distance=3790, log_age=9.29, metallicity=-0.32 |
| Loktin & Popova (2017) | E(B-V)=0.103, Dmod=12.244, logt=8.93 |
| Liu & Pang (2019) | Age=1.38, Z=0.25 |
| Cantat-Gaudin et al. (2020) | AVNN=0.01, DMNN=13.01, AgeNN=9.32 |
| Donor et al. (2020) | Fe/H=-0.26 |
| Dias et al. (2021) | Av=0.183, Dist=4114, logage=9.316, [Fe/H]=-0.175 |
| Hunt & Reffert (2023) | AV50=0.051, diffAV50=0.294, MOD50=13.292, logAge50=9.263 |
| Cavallo et al. (2024) | AV50=0.57, dMod50=12.52, logAge50=9.36, [Fe/H]50=-0.66 |
| Hunt & Reffert (2024) | MassJ=5224.57 |
| Hu & Soubiran (2025) | MA22=-0.41, MA23f=-0.51, MA23g=-0.37, MZ23=-0.41, MK24=-0.41, MF24=-0.36 |
Search coordinates in Bayestar19
Cluster region
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| OC 0378 | 2.3 | 93.91 | -18.72 | 0.26 | -0.59 | 1.94 | 92.94 | 0.0 |