Melotte 2
(Collinder 6; NGC 188; OCL 309; MWSC 74; FoF 651)
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UTI:
UCC Trust Index
Melotte 2 is a very rich, very dense object of very high C3 quality. It is very well-studied in the literature. This object shares a large percentage of members with a later reported entry. |
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| C3 | N_50 |
r_50 |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AA | 1337 | 8.3 | ||||||||||||
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 11.867 | 85.255 | – | -0.21 | 0.17 | -42.35 |
| Chen et al. (2003) | 11.242 | 85.35 | – | -1.48 | -0.56 | -44.0 |
| Kharchenko et al. (2012) | 11.85 | 85.255 | – | 0.15 | -1.43 | – |
| Loktin & Popova (2017) | 11.865 | 85.255 | – | 0.554 | -1.476 | -45.0 |
| Angelo et al. (2019) | 12.004 | 85.246 | – | – | – | – |
| Bica et al. (2019) | 11.943 | 85.261 | – | – | – | – |
| Bossini et al. (2019) | 11.798 | 85.244 | – | – | – | – |
| Liu & Pang (2019) | 11.767 | 85.245 | 0.508 | -2.308 | -0.95 | – |
| Cantat-Gaudin et al. (2020) | 11.798 | 85.244 | 0.507 | -2.307 | -0.96 | – |
| Donor et al. (2020) | 11.85 | 85.255 | – | -2.33 | -0.92 | -41.4 |
| Dias et al. (2021) | 11.824 | 85.241 | 0.509 | -2.302 | -0.955 | -41.602 |
| Jaehnig et al. (2021) | 11.786 | 85.244 | 0.537 | -2.308 | -0.952 | – |
| Hunt & Reffert (2023) | 11.837 | 85.251 | 0.523 | -2.318 | -1.015 | -41.127 |
| Cavallo et al. (2024) | 11.858 | 85.25 | 0.523 | – | – | – |
| Hunt & Reffert (2024) | 11.837 | 85.251 | 0.523 | -2.318 | -1.015 | -41.127 |
| Hu & Soubiran (2025) | 11.858 | 85.25 | – | – | – | – |
| UCC | 11.786 | 85.243 | 0.525 | -2.32 | -1.007 | -41.837 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.036, Dist=1714.0, Age=9.88, [Fe/H]=0.12 |
| Chen et al. (2003) | E(B-V)=0.082, HDis=2047, Age=4.28, [Fe/H]_1=-0.02, [Fe/H]_2=-0.12 |
| Kharchenko et al. (2012) | e_bv=0.085, distance=2000, log_age=9.65, metallicity=-0.01 |
| Loktin & Popova (2017) | E(B-V)=0.09, Dmod=11.606, logt=9.616 |
| Angelo et al. (2019) | dsun=1.82, Age=7.08, Mphot=323 |
| Bossini et al. (2019) | AV=0.079, Dist=11.114, logA=9.877, Fe/H=0.11 |
| Liu & Pang (2019) | Age=4.37, Z=0.25 |
| Cantat-Gaudin et al. (2020) | AVNN=0.21, DMNN=11.15, AgeNN=9.85 |
| Donor et al. (2020) | Fe/H=0.09 |
| Dias et al. (2021) | Av=0.233, Dist=1859, logage=9.792, [Fe/H]=0.112 |
| Hunt & Reffert (2023) | AV50=0.229, diffAV50=0.431, MOD50=11.309, logAge50=9.42 |
| Cavallo et al. (2024) | AV50=0.32, dMod50=11.27, logAge50=9.58, [Fe/H]50=0.18 |
| Hunt & Reffert (2024) | MassJ=3655.09 |
| Hu & Soubiran (2025) | MA22=-0.1, MA23f=-0.12, MA23g=0.05, MZ23=0.09, MK24=-0.07, MF24=0.01 |
Search coordinates in Bayestar19
Cluster region
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| CWWDL 3252 | 76.1 | 11.78 | 85.24 | 0.53 | -2.32 | -1.02 | -42.0 | 0.0 |