Ruprecht 44
(OCL 681; ESO 430 05; MWSC 1398)
Summary
Ruprecht 44 is a rich, very dense object of very high C3 quality. It is located at a large distance from the Sun, above the mid-plane. It is very well-studied in the literature.
This object shares a very small percentage of members with a later reported entry.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dambis (1999) | 119.725 | -28.583 | – | – | – | – |
| Dias et al. (2002) | 119.713 | -28.583 | – | -2.17 | 0.17 | 93.7 |
| Piskunov et al. (2008) | 119.707 | -28.58 | – | – | – | – |
| Kharchenko et al. (2012) | 119.722 | -28.585 | – | -1.58 | 1.02 | – |
| Loktin & Popova (2017) | 119.715 | -28.582 | – | -2.618 | -0.892 | 93.7 |
| Cantat-Gaudin et al. (2018) | 119.708 | -28.558 | 0.152 | -2.381 | 2.935 | – |
| Bica et al. (2019) | 119.711 | -28.566 | – | – | – | – |
| Bossini et al. (2019) | 119.708 | -28.558 | – | – | – | – |
| Dias et al. (2019) | 119.713 | -28.583 | 0.172 | -2.338 | 2.843 | 64.017 |
| Cantat-Gaudin et al. (2020) | 119.708 | -28.558 | 0.152 | -2.381 | 2.935 | – |
| Dias et al. (2021) | 119.713 | -28.569 | 0.156 | -2.378 | 2.938 | – |
| Rain et al. (2021) | 119.708 | -28.558 | 0.152 | -2.381 | 2.935 | – |
| Jaehnig et al. (2021) | 119.709 | -28.563 | 0.183 | -2.366 | 2.918 | – |
| Hunt & Reffert (2023) | 119.692 | -28.547 | 0.181 | -2.334 | 2.917 | – |
| Cavallo et al. (2024) | 119.697 | -28.562 | 0.181 | – | – | – |
| Celli et al. (2024) | 119.708 | -28.558 | – | – | – | – |
| Hunt & Reffert (2024) | 119.692 | -28.547 | 0.181 | -2.334 | 2.917 | – |
| Almeida et al. (2025) | 119.713 | -28.569 | – | – | – | – |
| UCC | 119.704 | -28.558 | 0.176 | -2.352 | 2.934 | 114.157 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dambis (1999) | E_B-V_=0.645, DM0=12.95, log_age_=6.4 |
| Dias et al. (2002) | E(B-V)=0.619, Dist=4730.0, Age=6.941 |
| Piskunov et al. (2008) | E(B-V)=0.62, Dist=4655, logt=7.33, logMA=3.931 |
| Kharchenko et al. (2012) | e_bv=0.604, distance=4666, log_age=6.8 |
| Loktin & Popova (2017) | E(B-V)=0.615, Dist=4639, logt=6.967 |
| Cantat-Gaudin et al. (2018) | dmode=5536.9 |
| Bossini et al. (2019) | AV=1.885, Dist=13.849, logA=7.132, Fe/H=0.0 |
| Dias et al. (2019) | E(B-V)=0.44, Dist=4339, logAge=7.358, Z=0.008 |
| Cantat-Gaudin et al. (2020) | AVNN=1.64, DistPc=5753.0, AgeNN=7.16 |
| Dias et al. (2021) | Av=1.957, Dist=4504, logage=7.089, [Fe/H]=-0.115 |
| Rain et al. (2021) | E(B-V)=0.6, Dist=5536.9, log(Age)=7.13, NBSS=0 |
| Jaehnig et al. (2021) | dmode=5.529 |
| Hunt & Reffert (2023) | AV50=1.789, diffAV50=1.872, MOD50=13.556, logAge50=7.309 |
| Cavallo et al. (2024) | AV50=1.86, dMod50=12.77, logAge50=7.43, [Fe/H]50=-0.29 |
| Celli et al. (2024) | Age=14.5, Mc=731.1 |
| Hunt & Reffert (2024) | MassJ=1948.01, MassTot=2006.52 |
| Almeida et al. (2025) | AV=1.957, Dist=4504, logAge=7.089, MassRk=34.4 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| FoF 1429 | 9.6 | 119.42 | -28.54 | 0.21 | -2.31 | 2.89 | 76.8 | 0.5 |