Trumpler 2
(Collinder 29; OCL 365; MWSC 219; FoF 2297)
Summary
Trumpler 2 is a rich, very dense object of very high C3 quality. It is located at a close distance from the Sun, near the mid-plane. It is very well-studied in the literature.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 39.221 | 55.915 | – | 0.11 | -3.49 | 2.4 |
| Chen et al. (2003) | 39.31 | 55.971 | – | 1.36 | -5.13 | 2.4 |
| Piskunov et al. (2007) | 39.211 | 55.919 | – | – | – | – |
| Piskunov et al. (2008) | 39.211 | 55.919 | – | – | – | – |
| Kharchenko et al. (2012) | 39.367 | 55.95 | – | 0.78 | -4.0 | – |
| Loktin & Popova (2017) | 39.225 | 55.915 | – | 1.375 | -1.757 | -27.5 |
| Cantat-Gaudin et al. (2018) | 39.232 | 55.905 | 1.431 | 1.583 | -5.352 | – |
| Bica et al. (2019) | 39.281 | 55.934 | – | – | – | – |
| Soubiran et al. (2018) | 39.232 | 55.905 | – | – | – | -4.12 |
| Bossini et al. (2019) | 39.232 | 55.905 | – | – | – | – |
| Liu & Pang (2019) | 39.222 | 55.966 | 1.441 | 1.574 | -5.323 | – |
| Cantat-Gaudin et al. (2020) | 39.232 | 55.905 | 1.431 | 1.583 | -5.352 | – |
| Dias et al. (2021) | 39.239 | 55.894 | 1.435 | 1.581 | -5.343 | -3.99 |
| Rain et al. (2021) | 39.232 | 55.905 | 1.431 | 1.583 | -5.352 | – |
| Jaehnig et al. (2021) | 39.255 | 55.934 | 1.456 | 1.56 | -5.302 | – |
| Tarricq et al. (2022) | 39.217 | 55.927 | 1.434 | 1.553 | -5.375 | – |
| He et al. (2022) | 39.34 | 55.914 | 1.449 | 1.525 | -5.381 | – |
| Hunt & Reffert (2023) | 39.305 | 55.926 | 1.455 | 1.54 | -5.411 | -8.322 |
| Cavallo et al. (2024) | 38.956 | 55.889 | 1.448 | – | – | – |
| Hunt & Reffert (2024) | 39.305 | 55.926 | 1.455 | 1.54 | -5.411 | -8.322 |
| Alfonso et al. (2024) | 38.967 | 55.958 | 1.397 | 1.462 | -5.223 | – |
| Almeida et al. (2025) | 39.239 | 55.894 | – | – | – | – |
| UCC | 39.247 | 55.927 | 1.445 | 1.531 | -5.406 | -7.248 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.4, Dist=725.0, Age=7.95 |
| Chen et al. (2003) | HDis=651, Age=0.14, [Fe/H]_1=-0.45 |
| Piskunov et al. (2007) | E(B-V)=0.32, Dist=649, logt=7.93, logM=1.785 |
| Piskunov et al. (2008) | E(B-V)=0.32, Dist=649, logt=7.93, logM=2.205, logMA=2.634 |
| Kharchenko et al. (2012) | e_bv=0.321, distance=670, log_age=7.925 |
| Loktin & Popova (2017) | E(B-V)=0.328, Dist=660, logt=8.134 |
| Cantat-Gaudin et al. (2018) | dmode=684.8 |
| Soubiran et al. (2018) | dmode=684.8 |
| Bossini et al. (2019) | AV=0.954, Dist=9.335, logA=7.962, Fe/H=0.0 |
| Liu & Pang (2019) | Age=0.081, Z=0.25 |
| Cantat-Gaudin et al. (2020) | AVNN=0.86, DistPc=710.0, AgeNN=8.05 |
| Dias et al. (2021) | Av=1.101, Dist=677, logage=8.376, [Fe/H]=0.14 |
| Rain et al. (2021) | E(B-V)=0.3, Dist=684.8, log(Age)=7.96, NBSS=0 |
| Jaehnig et al. (2021) | dmode=0.687 |
| Tarricq et al. (2022) | Dist=696, logAgeNN=8.05 |
| He et al. (2022) | A0=1.2, logAge=7.9 |
| Hunt & Reffert (2023) | AV50=0.865, diffAV50=1.105, MOD50=9.076, logAge50=7.955 |
| Cavallo et al. (2024) | AV50=1.2, dMod50=9.29, logAge50=7.82, [Fe/H]50=0.4 |
| Hunt & Reffert (2024) | MassJ=701.619, MassTot=917.877 |
| Alfonso et al. (2024) | AV=0.85592, MOD=9.26127, logAge=8.24801, Z=0.13859 |
| Almeida et al. (2025) | AV=1.101, Dist=677, logAge=8.376, MassRk=423.2 |
Search coordinates in Bayestar19