RSG8
(OCSN 258)
Summary
RSG8 is a very rich, very dense object of very high C3 quality. It is located at a very close distance from the Sun, near the mid-plane. It is very well-studied in the literature.
This is very likely a unique object, which shares a small percentage of members with at least one previously reported entry, and a moderate percentage with at least one entry reported in the same catalogue.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Roser et al. (2016) | 344.54 | 59.16 | – | 5.81 | -0.7 | – |
| Cantat-Gaudin et al. (2018) | 344.983 | 59.371 | 2.21 | 5.343 | -1.654 | – |
| Soubiran et al. (2018) | 344.983 | 59.371 | – | – | – | -9.64 |
| Cantat-Gaudin et al. (2020) | 344.983 | 59.371 | 2.21 | 5.343 | -1.654 | – |
| Dias et al. (2021) | 345.032 | 59.37 | 2.194 | 5.374 | -1.564 | -9.41 |
| He et al. (2022) | 346.619 | 58.966 | 2.139 | 5.807 | -1.665 | – |
| Qin et al. (2023) | 344.85 | 59.25 | 2.15 | 5.67 | -1.54 | -7.96 |
| Hunt & Reffert (2023) | 345.453 | 59.509 | 2.057 | 5.664 | -1.716 | -9.656 |
| Cavallo et al. (2024) | 345.761 | 59.394 | 2.05 | – | – | – |
| Celli et al. (2024) | 344.983 | 59.371 | – | – | – | – |
| Hunt & Reffert (2024) | 345.453 | 59.509 | 2.057 | 5.664 | -1.716 | -9.656 |
| Alfonso et al. (2024) | -14.769 | 59.221 | 2.077 | 5.537 | -1.602 | – |
| Almeida et al. (2025) | 345.032 | 59.37 | – | – | – | – |
| UCC | 345.082 | 59.415 | 2.165 | 5.446 | -1.648 | -10.445 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Roser et al. (2016) | E(B-V)=0.05, Dist=331, logt=8.5 |
| Cantat-Gaudin et al. (2018) | dmode=446.7 |
| Soubiran et al. (2018) | dmode=446.7 |
| Cantat-Gaudin et al. (2020) | AVNN=0.53, DistPc=431.0, AgeNN=7.43 |
| Dias et al. (2021) | Av=0.644, Dist=450, logage=7.568, [Fe/H]=-0.023 |
| He et al. (2022) | A0=1.15, logAge=7.25 |
| Qin et al. (2023) | E(B-V)=0.28, m-M=9.11, logt=7.3 |
| Hunt & Reffert (2023) | AV50=0.42, diffAV50=0.625, MOD50=8.382, logAge50=7.133 |
| Cavallo et al. (2024) | AV50=0.83, dMod50=8.55, logAge50=6.93, [Fe/H]50=-0.14 |
| Celli et al. (2024) | Age=26.9, Mc=204.6 |
| Hunt & Reffert (2024) | MassJ=83.3106, MassTot=175.127 |
| Alfonso et al. (2024) | AV=0.52834, MOD=8.17041, logAge=7.47595, Z=-0.0233 |
| Almeida et al. (2025) | AV=0.644, Dist=450, logAge=7.568, MassRk=343.1 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| RSG7 | 48.6 | 344.32 | 59.45 | 2.25 | 5.18 | -1.78 | -11.08 | 0.49 |
| NGC 7429 | 20.3 | 344.03 | 59.88 | 2.36 | 4.81 | -2.19 | -12.68 | 0.76 |
| CWWDL 14636 | 11.2 | 345.54 | 59.54 | 2.04 | 5.66 | -1.67 | -9.39 | 0.0 |
| CWWDL 14638 | 8.9 | 344.12 | 59.28 | 2.29 | 5.37 | -0.9 | -14.39 | 0.01 |
| CWWDL 14637 | 8.7 | 343.95 | 59.81 | 2.37 | 4.78 | -2.24 | -12.62 | 0.0 |
| CWWDL 14622 | 6.1 | 345.68 | 58.22 | 2.25 | 5.43 | -1.31 | -8.93 | 0.01 |