Collinder 123
(NGC 2311; MWSC 1035; OCL 553; FSR 1127; FoF 931)
Summary
Collinder 123 is a rich, very dense object of high C3 quality. It is located at a moderate distance from the Sun, near the mid-plane. It is very well-studied in the literature.
This object shares a small percentage of members with 2 later reported entries.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dias et al. (2002) | 104.446 | -4.612 | – | -1.48 | 3.31 | – |
| Kharchenko et al. (2003) | 104.46 | -4.56 | – | -3.82 | 3.29 | – |
| Kharchenko et al. (2005) | 104.44 | -4.61 | – | -3.2 | 2.77 | – |
| Piskunov et al. (2008) | 104.436 | -4.607 | – | – | – | – |
| Kharchenko et al. (2013) | 104.445 | -4.61 | – | -0.85 | 2.89 | – |
| Kharchenko et al. (2016) | 104.438 | -4.608 | – | – | – | – |
| Loktin & Popova (2017) | 104.445 | -4.611 | – | 0.348 | 0.172 | – |
| Cantat-Gaudin et al. (2018) | 104.455 | -4.616 | 0.462 | -1.343 | 0.93 | – |
| Bica et al. (2019) | 104.445 | -4.602 | – | – | – | – |
| Liu & Pang (2019) | 104.487 | -4.655 | 0.464 | -1.391 | 0.862 | – |
| Donor et al. (2020) | 104.445 | -4.61 | – | -1.46 | 0.8 | 100.5 |
| Cantat-Gaudin et al. (2020) | 104.455 | -4.616 | 0.462 | -1.343 | 0.93 | – |
| Dias et al. (2021) | 104.464 | -4.619 | 0.468 | -1.348 | 0.938 | – |
| Rain et al. (2021) | 104.455 | -4.616 | 0.462 | -1.343 | 0.93 | – |
| Jaehnig et al. (2021) | 104.504 | -4.628 | 0.474 | -1.573 | 0.821 | – |
| Just et al. (2023) | 104.438 | -4.608 | – | – | – | – |
| Hunt & Reffert (2023) | 104.447 | -4.613 | 0.445 | -1.293 | 1.024 | 32.111 |
| Cavallo et al. (2024) | 104.454 | -4.612 | 0.448 | – | – | – |
| Hunt & Reffert (2024) | 104.447 | -4.613 | 0.445 | -1.293 | 1.024 | 32.111 |
| Almeida et al. (2025) | 104.464 | -4.619 | – | – | – | – |
| UCC | 104.448 | -4.608 | 0.446 | -1.312 | 0.996 | 32.108 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dias et al. (2002) | E(B-V)=0.33, Dist=2290.0, Age=8.6 |
| Kharchenko et al. (2003) | E(B-V)=0.28, Dist=2290 |
| Kharchenko et al. (2005) | E(B-V)=0.2, Dist=2000, logt=8.6 |
| Piskunov et al. (2008) | E(B-V)=0.2, Dist=2000, logt=8.6, logMA=2.822 |
| Kharchenko et al. (2013) | E(B-V)=0.208, d=2221.0, logt=8.815 |
| Kharchenko et al. (2016) | E(B-V)=0.208, d=2221.0, logt=8.815 |
| Loktin & Popova (2017) | E(B-V)=0.312, Dist=3119, logt=8.68 |
| Cantat-Gaudin et al. (2018) | dmode=2036.4 |
| Liu & Pang (2019) | Age=0.008, Z=0.5 |
| Donor et al. (2020) | Fe/H=-0.32 |
| Cantat-Gaudin et al. (2020) | AVNN=1.0, DistPc=2003.0, AgeNN=7.65 |
| Dias et al. (2021) | Av=1.092, Dist=1839, logage=7.777, [Fe/H]=-0.079 |
| Rain et al. (2021) | E(B-V)=0.33, Dist=2036.4, log(Age)=8.6, NBSS=0 |
| Jaehnig et al. (2021) | dmode=2.1 |
| Just et al. (2023) | logt=8.815, logmt=2.97 |
| Hunt & Reffert (2023) | AV50=0.845, diffAV50=0.889, MOD50=11.536, logAge50=7.985 |
| Cavallo et al. (2024) | AV50=0.85, dMod50=11.61, logAge50=8.0, [Fe/H]50=0.4 |
| Hunt & Reffert (2024) | MassJ=419.116, MassTot=419.116 |
| Almeida et al. (2025) | AV=1.092, Dist=1839, logAge=7.777, MassRk=435.2 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| OC 0365 | 21.2 | 104.45 | -4.61 | 0.46 | -1.32 | 1.02 | 32.11 | 0.0 |
| HSC 1722 | 1.7 | 104.57 | -4.75 | 0.43 | -1.76 | 0.75 | – | 0.37 |