Trumpler 28
(Collinder 337; VDBH 238; OCL 1029; vdBergh-Hagen 238; ESO 455 25; MWSC 2641; FoF 2243)
Summary
Trumpler 28 is a rich, very dense object of high C3 quality. It is located at a relatively close distance from the Sun, near the mid-plane. It is very well-studied in the literature.
This object shares a significant percentage of members with 3 later reported entries.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dambis (1999) | 264.25 | -32.483 | – | – | – | – |
| Dias et al. (2002) | 264.25 | -32.483 | – | -0.56 | -1.8 | 7.0 |
| Piskunov et al. (2008) | 264.246 | -32.481 | – | – | – | – |
| Kharchenko et al. (2012) | 264.255 | -32.48 | – | -0.78 | -1.78 | – |
| Loktin & Popova (2017) | 264.255 | -32.484 | – | -0.418 | -1.86 | 7.0 |
| Cantat-Gaudin et al. (2018) | 264.231 | -32.469 | 0.678 | -0.851 | -2.824 | – |
| Bica et al. (2019) | 264.209 | -32.473 | – | – | – | – |
| Soubiran et al. (2018) | 264.231 | -32.469 | – | – | – | -23.47 |
| Dias et al. (2019) | 264.229 | -32.469 | 0.678 | -0.851 | -2.824 | -15.81 |
| Liu & Pang (2019) | 264.219 | -32.482 | 0.704 | -0.826 | -2.796 | – |
| Cantat-Gaudin et al. (2020) | 264.231 | -32.469 | 0.678 | -0.851 | -2.824 | – |
| Dias et al. (2021) | 264.236 | -32.468 | 0.669 | -0.833 | -2.79 | -39.396 |
| Rain et al. (2021) | 264.231 | -32.469 | 0.678 | -0.851 | -2.824 | – |
| Jaehnig et al. (2021) | 264.231 | -32.466 | 0.736 | -0.771 | -2.815 | – |
| Hunt & Reffert (2023) | 264.232 | -32.476 | 0.659 | -0.828 | -2.813 | -35.935 |
| Cavallo et al. (2024) | 264.22 | -32.459 | 0.665 | – | – | – |
| Hunt & Reffert (2024) | 264.232 | -32.476 | 0.659 | -0.828 | -2.813 | -35.935 |
| Almeida et al. (2025) | 264.236 | -32.468 | – | – | – | – |
| UCC | 264.224 | -32.464 | 0.646 | -0.844 | -2.826 | -48.36 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dambis (1999) | E_B-V_=0.761, DM0=10.45, log_age_=7.35 |
| Dias et al. (2002) | E(B-V)=0.733, Dist=1343.0, Age=7.29, [Fe/H]=0.326 |
| Piskunov et al. (2008) | E(B-V)=0.73, Dist=1343, logt=6.89, logMA=2.33 |
| Kharchenko et al. (2012) | e_bv=0.958, distance=1474, log_age=6.6, metallicity=0.326 |
| Loktin & Popova (2017) | E(B-V)=0.747, Dist=1359, logt=7.352 |
| Cantat-Gaudin et al. (2018) | dmode=1415.3 |
| Soubiran et al. (2018) | dmode=1415.3 |
| Dias et al. (2019) | E(B-V)=0.57, Dist=1380, logAge=7.503, Z=0.017 |
| Liu & Pang (2019) | Age=0.295, Z=0.25 |
| Cantat-Gaudin et al. (2020) | AVNN=1.79, DistPc=1397.0, AgeNN=7.89 |
| Dias et al. (2021) | Av=2.244, Dist=1355, logage=7.276, [Fe/H]=0.174 |
| Rain et al. (2021) | E(B-V)=0.73, Dist=1415.3, log(Age)=7.29, NBSS=0 |
| Jaehnig et al. (2021) | dmode=1.358 |
| Tarricq et al. (2022) | Dist=1349, logAgeNN=7.97 |
| Hunt & Reffert (2023) | AV50=2.345, diffAV50=1.287, MOD50=10.752, logAge50=7.737 |
| Cavallo et al. (2024) | AV50=2.71, dMod50=10.57, logAge50=7.16, [Fe/H]50=-1.01 |
| Hunt & Reffert (2024) | MassJ=588.297, MassTot=588.297 |
| Almeida et al. (2025) | AV=2.244, Dist=1355, logAge=7.276, MassRk=479.7 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| UBC 569 | 71.1 | 264.22 | -32.46 | 0.66 | -0.78 | -2.81 | -37.2 | 0.05 |
| Ryu 144 | 0.5 | 264.02 | -32.63 | 0.35 | -1.38 | -2.86 | -42.75 | 0.22 |
| Trumpler 28b | 0.5 | 264.25 | -32.47 | 0.26 | -0.93 | -2.52 | -12.36 | 0.29 |