Collinder 85
(NGC 2186; MWSC 787; OCL 498; FoF 17)
Summary
Collinder 85 is a rich, very dense object of 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 a later reported entry.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 93.033 | 5.454 | – | -0.23 | -2.79 | 20.15 |
| Kharchenko et al. (2003) | 93.03 | 5.46 | – | 1.57 | -0.86 | – |
| Kharchenko et al. (2005) | 93.03 | 5.46 | – | 1.61 | -0.29 | – |
| Piskunov et al. (2008) | 93.021 | 5.459 | – | – | – | – |
| Kharchenko et al. (2013) | 93.037 | 5.463 | – | 0.03 | -0.12 | 20.2 |
| Kharchenko et al. (2016) | 93.03 | 5.464 | – | – | – | – |
| Loktin & Popova (2017) | 93.03 | 5.454 | – | 0.168 | 0.487 | 20.2 |
| Cantat-Gaudin et al. (2018) | 93.031 | 5.453 | 0.413 | 0.415 | -1.993 | – |
| Bica et al. (2019) | 93.035 | 5.455 | – | – | – | – |
| Soubiran et al. (2018) | 93.031 | 5.453 | – | – | – | 21.98 |
| Liu & Pang (2019) | 93.047 | 5.462 | 0.426 | 0.409 | -1.967 | – |
| Cantat-Gaudin et al. (2020) | 93.031 | 5.453 | 0.413 | 0.415 | -1.993 | – |
| Dias et al. (2021) | 93.022 | 5.452 | 0.412 | 0.405 | -1.967 | – |
| Rain et al. (2021) | 93.031 | 5.453 | 0.413 | 0.415 | -1.993 | – |
| Jaehnig et al. (2021) | 93.031 | 5.457 | 0.437 | 0.423 | -1.998 | – |
| Just et al. (2023) | 93.03 | 5.464 | – | – | – | – |
| Hunt & Reffert (2023) | 93.028 | 5.451 | 0.422 | 0.383 | -1.944 | 43.378 |
| Cavallo et al. (2024) | 93.021 | 5.457 | 0.426 | – | – | – |
| Hunt & Reffert (2024) | 93.028 | 5.451 | 0.422 | 0.383 | -1.944 | 43.378 |
| Zhang et al. (2024) | 93.028 | 5.451 | – | – | – | – |
| Almeida et al. (2025) | 93.022 | 5.452 | – | – | – | – |
| UCC | 93.031 | 5.45 | 0.432 | 0.375 | -1.96 | 43.369 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.27, Dist=2700.0, Age=8.3 |
| Kharchenko et al. (2003) | E(B-V)=0.22, Dist=1449 |
| Kharchenko et al. (2005) | E(B-V)=0.26, Dist=1445, logt=8.08 |
| Piskunov et al. (2008) | E(B-V)=0.26, Dist=1445, logt=8.08, logMA=1.547 |
| Kharchenko et al. (2013) | E(B-V)=0.26, d=1445.0, logt=8.2 |
| Kharchenko et al. (2016) | E(B-V)=0.26, d=1445.0, logt=8.2 |
| Loktin & Popova (2017) | E(B-V)=0.265, Dist=1710, logt=7.81 |
| Cantat-Gaudin et al. (2018) | dmode=2260.8 |
| Soubiran et al. (2018) | dmode=2260.8 |
| Liu & Pang (2019) | Age=0.933, Z=-0.5 |
| Cantat-Gaudin et al. (2020) | AVNN=0.65, DistPc=2251.0, AgeNN=8.4 |
| Dias et al. (2021) | Av=1.058, Dist=2029, logage=8.173, [Fe/H]=-0.153 |
| Rain et al. (2021) | E(B-V)=0.27, Dist=2260.8, log(Age)=8.3, NBSS=0 |
| Jaehnig et al. (2021) | dmode=2.285 |
| Just et al. (2023) | logt=8.2, logmt=2.026 |
| Hunt & Reffert (2023) | AV50=0.6, diffAV50=1.209, MOD50=11.626, logAge50=8.536 |
| Cavallo et al. (2024) | AV50=0.93, dMod50=11.66, logAge50=8.43, [Fe/H]50=0.0 |
| Hunt & Reffert (2024) | MassJ=673.933, MassTot=675.649 |
| Zhang et al. (2024) | [Fe/H]ANN=-0.2971, [Fe/H]MCMC=-0.2905 |
| Almeida et al. (2025) | AV=1.058, Dist=2029, logAge=8.173, MassRk=417.5 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| OC 0338 | 14.4 | 93.05 | 5.45 | 0.44 | 0.36 | -1.91 | 21.69 | 0.0 |