NGC 6991
(FoF 2342)
Summary
NGC 6991 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 |
|---|---|---|---|---|---|---|
| Kharchenko et al. (2005) | 313.63 | 47.45 | – | 7.0 | 9.26 | -6.0 |
| Piskunov et al. (2007) | 313.634 | 47.445 | – | – | – | – |
| Kharchenko et al. (2007) | 313.72 | 47.42 | – | 0.42 | – | -6.0 |
| Piskunov et al. (2008) | 313.634 | 47.445 | – | – | – | – |
| Loktin & Popova (2017) | 313.725 | 47.417 | – | -0.272 | -0.157 | -21.77 |
| Cantat-Gaudin et al. (2018) | 313.621 | 47.4 | 1.765 | 5.593 | 8.509 | – |
| Soubiran et al. (2018) | 313.621 | 47.4 | – | – | – | -12.46 |
| Liu & Pang (2019) | 313.637 | 47.413 | 1.775 | 5.571 | 8.508 | – |
| Cantat-Gaudin et al. (2020) | 313.621 | 47.4 | 1.765 | 5.593 | 8.509 | – |
| Dias et al. (2021) | 313.689 | 47.405 | 1.766 | 5.589 | 8.505 | -12.027 |
| Tarricq et al. (2022) | 313.631 | 47.43 | 1.775 | 5.617 | 8.392 | – |
| He et al. (2022) | 313.655 | 47.395 | 1.771 | 5.622 | 8.402 | – |
| Hunt & Reffert (2023) | 313.649 | 47.377 | 1.767 | 5.604 | 8.436 | -12.326 |
| Cavallo et al. (2024) | 313.638 | 47.422 | 1.769 | – | – | – |
| Hunt & Reffert (2024) | 313.649 | 47.377 | 1.767 | 5.604 | 8.436 | -12.326 |
| Alfonso et al. (2024) | 313.608 | 47.395 | 1.741 | 5.614 | 8.415 | – |
| Almeida et al. (2025) | 313.689 | 47.405 | – | – | – | – |
| Hu & Soubiran (2025) | 313.638 | 47.422 | – | – | – | – |
| UCC | 313.61 | 47.379 | 1.769 | 5.616 | 8.422 | -12.222 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Kharchenko et al. (2005) | E(B-V)=0.0, Dist=700, logt=9.11 |
| Piskunov et al. (2007) | E(B-V)=0.0, Dist=700, logt=9.11, logM=2.17 |
| Piskunov et al. (2008) | E(B-V)=0.0, Dist=700, logt=9.11, logM=2.643, logMA=2.334 |
| Loktin & Popova (2017) | E(B-V)=0.388, Dist=3103, logt=9.18 |
| Cantat-Gaudin et al. (2018) | dmode=557.3 |
| Soubiran et al. (2018) | dmode=557.3 |
| Liu & Pang (2019) | Age=1.95, Z=-0.5 |
| Cantat-Gaudin et al. (2020) | AVNN=0.2, DistPc=577.0, AgeNN=9.19 |
| Dias et al. (2021) | Av=0.49, Dist=558, logage=9.155, [Fe/H]=-0.077 |
| Tarricq et al. (2022) | Dist=569, logAgeNN=9.21 |
| He et al. (2022) | A0=0.65, logAge=8.95 |
| Hunt & Reffert (2023) | AV50=0.288, diffAV50=0.748, MOD50=8.638, logAge50=8.995 |
| Cavallo et al. (2024) | AV50=0.6, dMod50=8.74, logAge50=9.1, [Fe/H]50=0.12 |
| Hunt & Reffert (2024) | MassJ=307.226, MassTot=511.961 |
| Alfonso et al. (2024) | AV=0.20177, MOD=8.80843, logAge=9.25031, Z=-0.0754 |
| Almeida et al. (2025) | AV=0.49, Dist=558, logAge=9.155, MassRk=373.0 |
| Hu & Soubiran (2025) | MA22=-0.18, MA23f=-0.09, MA23g=-0.07, MZ23=-0.04, MK24=-0.11, MF24=-0.05 |
Search coordinates in Bayestar19