Trumpler 21
(Collinder 274; VDBH 148; MWSC 2131; OCL 903; vdBergh-Hagen 148; ESO 096 15; FoF 2099)
Summary
Trumpler 21 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.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dambis (1999) | 203.05 | -62.8 | – | – | – | – |
| Dias et al. (2002) | 203.058 | -62.8 | – | -3.62 | -3.36 | – |
| Kharchenko et al. (2003) | 203.05 | -62.78 | – | -11.09 | -1.86 | – |
| Kharchenko et al. (2005) | 203.05 | -62.8 | – | -10.41 | -4.77 | – |
| Piskunov et al. (2008) | 203.047 | -62.794 | – | – | – | – |
| Kharchenko et al. (2013) | 203.055 | -62.8 | – | -10.4 | -4.5 | -32.9 |
| Kharchenko et al. (2016) | 203.043 | -62.797 | – | – | – | – |
| Loktin & Popova (2017) | 203.055 | -62.8 | – | -8.459 | -2.734 | -32.9 |
| Cantat-Gaudin et al. (2018) | 203.068 | -62.787 | 0.722 | -4.682 | -2.312 | – |
| Bica et al. (2019) | 203.043 | -62.784 | – | – | – | – |
| Bossini et al. (2019) | 203.068 | -62.787 | – | – | – | – |
| Liu & Pang (2019) | 203.066 | -62.787 | 0.728 | -4.674 | -2.273 | – |
| Cantat-Gaudin et al. (2020) | 203.068 | -62.787 | 0.722 | -4.682 | -2.312 | – |
| Dias et al. (2021) | 203.067 | -62.789 | 0.725 | -4.667 | -2.293 | – |
| Rain et al. (2021) | 203.068 | -62.787 | 0.722 | -4.682 | -2.312 | – |
| Jaehnig et al. (2021) | 203.073 | -62.788 | 0.756 | -4.671 | -2.313 | – |
| Just et al. (2023) | 203.043 | -62.797 | – | – | – | – |
| Cordoni et al. (2023) | 203.067 | -62.789 | 0.725 | -4.667 | -2.293 | – |
| Hunt & Reffert (2023) | 203.055 | -62.781 | 0.726 | -4.719 | -2.267 | -14.672 |
| Cavallo et al. (2024) | 203.048 | -62.791 | 0.731 | – | – | – |
| Hunt & Reffert (2024) | 203.055 | -62.781 | 0.726 | -4.719 | -2.267 | -14.672 |
| Almeida et al. (2025) | 203.067 | -62.789 | – | – | – | – |
| UCC | 203.057 | -62.787 | 0.736 | -4.708 | -2.258 | -13.411 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dambis (1999) | E_B-V_=0.217, DM0=10.27, log_age_=7.6 |
| Dias et al. (2002) | E(B-V)=0.197, Dist=1263.0, Age=7.696 |
| Kharchenko et al. (2003) | E(B-V)=0.2, Dist=1263 |
| Kharchenko et al. (2005) | E(B-V)=0.18, Dist=1312, logt=7.76 |
| Piskunov et al. (2008) | E(B-V)=0.18, Dist=1312, logt=7.76, logMA=2.824 |
| Kharchenko et al. (2013) | E(B-V)=0.25, d=1270.0, logt=7.85 |
| Kharchenko et al. (2016) | E(B-V)=0.25, d=1270.0, logt=7.85 |
| Loktin & Popova (2017) | E(B-V)=0.188, Dist=1319, logt=7.736 |
| Cantat-Gaudin et al. (2018) | dmode=1330.6 |
| Bossini et al. (2019) | AV=0.723, Dist=10.559, logA=7.69, Fe/H=0.0 |
| Liu & Pang (2019) | Age=0.033, Z=0.5 |
| Cantat-Gaudin et al. (2020) | AVNN=0.58, DistPc=1326.0, AgeNN=7.69 |
| Dias et al. (2021) | Av=0.85, Dist=1279, logage=7.71, [Fe/H]=0.138 |
| Rain et al. (2021) | E(B-V)=0.23, Dist=1330.6, log(Age)=7.69, NBSS=0 |
| Jaehnig et al. (2021) | dmode=1.328 |
| Tarricq et al. (2022) | Dist=1292, logAgeNN=7.71 |
| Just et al. (2023) | logt=7.85, logmt=1.907 |
| Cordoni et al. (2023) | Av=0.85, Dist=10.534, logAge=7.71, [Fe/H]=0.138, mass-single=2162.66, fbin-tot=0.333, fbss-MS=0.0 |
| Hunt & Reffert (2023) | AV50=0.598, diffAV50=0.657, MOD50=10.533, logAge50=7.98 |
| Cavallo et al. (2024) | AV50=1.02, dMod50=10.29, logAge50=7.84, [Fe/H]50=-0.45 |
| Hunt & Reffert (2024) | MassJ=527.506, MassTot=527.506 |
| Almeida et al. (2025) | AV=0.85, Dist=1279, logAge=7.71, MassRk=342.8 |
Search coordinates in Bayestar19