NGC 2439
Summary
NGC 2439 is a very rich, very dense object of very high C3 quality. It is located at a moderate distance from the Sun, below the mid-plane. It is very well-studied in the literature.
This object shares a small percentage of members with 3 later reported entries.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dambis (1999) | 115.187 | -31.693 | – | – | – | – |
| Dias et al. (2002) | 115.188 | -31.693 | – | -2.22 | 3.13 | 66.0 |
| Chen et al. (2003) | 115.231 | -31.624 | – | -2.22 | 3.13 | 68.0 |
| Piskunov et al. (2008) | 115.177 | -31.684 | – | – | – | – |
| Kharchenko et al. (2012) | 115.2 | -31.705 | – | -2.9 | 1.74 | – |
| Loktin & Popova (2017) | 115.2 | -31.705 | – | -0.301 | -0.063 | 63.3 |
| Cantat-Gaudin et al. (2018) | 115.194 | -31.694 | 0.232 | -2.283 | 3.159 | – |
| Soubiran et al. (2018) | 115.194 | -31.694 | – | – | – | 68.22 |
| Dias et al. (2019) | 115.192 | -31.694 | 0.232 | -2.283 | 3.159 | 78.975 |
| Cantat-Gaudin et al. (2020) | 115.194 | -31.694 | 0.232 | -2.283 | 3.159 | – |
| Dias et al. (2021) | 115.188 | -31.689 | 0.238 | -2.293 | 3.15 | – |
| Rain et al. (2021) | 115.194 | -31.694 | 0.232 | -2.283 | 3.159 | – |
| Jaehnig et al. (2021) | 115.19 | -31.694 | 0.265 | -2.283 | 3.17 | – |
| Hunt & Reffert (2023) | 115.207 | -31.699 | 0.262 | -2.254 | 3.187 | 68.467 |
| Cavallo et al. (2024) | 115.193 | -31.682 | 0.262 | – | – | – |
| Celli et al. (2024) | 115.194 | -31.694 | – | – | – | – |
| Hunt & Reffert (2024) | 115.207 | -31.699 | 0.262 | -2.254 | 3.187 | 68.467 |
| Almeida et al. (2025) | 115.188 | -31.689 | – | – | – | – |
| UCC | 115.196 | -31.695 | 0.256 | -2.253 | 3.185 | 68.473 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dambis (1999) | E_B-V_=0.416, DM0=12.9, log_age_=7.2 |
| Dias et al. (2002) | E(B-V)=0.37, Dist=1300.0, Age=7.0 |
| Chen et al. (2003) | HDis=3855, Age=0.01 |
| Piskunov et al. (2008) | E(B-V)=0.4, Dist=3855, logt=6.82, logMA=3.513 |
| Kharchenko et al. (2012) | e_bv=0.437, distance=3834, log_age=7.25 |
| Loktin & Popova (2017) | E(B-V)=0.403, Dist=3870, logt=7.262 |
| Cantat-Gaudin et al. (2018) | dmode=3830.5 |
| Soubiran et al. (2018) | dmode=3830.5 |
| Dias et al. (2019) | E(B-V)=0.33, Dist=2972, logAge=7.463, Z=0.002 |
| Cantat-Gaudin et al. (2020) | AVNN=1.33, DistPc=3707.0, AgeNN=7.07 |
| Dias et al. (2021) | Av=1.35, Dist=3386, logage=7.334, [Fe/H]=-0.117 |
| Rain et al. (2021) | E(B-V)=0.37, Dist=3830.5, log(Age)=7.0, NBSS=0 |
| Jaehnig et al. (2021) | dmode=3.814 |
| Hunt & Reffert (2023) | AV50=0.942, diffAV50=0.814, MOD50=12.728, logAge50=7.763 |
| Cavallo et al. (2024) | AV50=1.29, dMod50=12.67, logAge50=7.55, [Fe/H]50=-0.21 |
| Celli et al. (2024) | Age=11.7, Mc=2711.8 |
| Hunt & Reffert (2024) | MassJ=4662.39, MassTot=4772.37 |
| Almeida et al. (2025) | AV=1.35, Dist=3386, logAge=7.334, MassRk=1493.1 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| OC 0430 | 18.4 | 115.2 | -31.69 | 0.27 | -2.25 | 3.2 | 69.12 | 0.0 |
| OC 0429 | 8.7 | 115.19 | -31.7 | 0.23 | -2.25 | 3.19 | 69.12 | 0.0 |
| CWWDL 3541 | 1.3 | 115.01 | -31.56 | 0.26 | -2.22 | 3.06 | – | 0.06 |