IC 4996
Summary
IC 4996 is a rich, very dense object of very high C3 quality. It is located at a moderate distance from the Sun, above the mid-plane. It is very well-studied in the literature.
This object shares a very small percentage of members with 2 later reported entries.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Dambis (1999) | 304.125 | 37.633 | – | – | – | – |
| Dias et al. (2002) | 304.129 | 37.655 | – | -0.53 | -4.34 | -13.0 |
| Chen et al. (2003) | 304.165 | 37.669 | – | -1.98 | -5.25 | -22.0 |
| Piskunov et al. (2008) | 304.119 | 37.633 | – | – | – | – |
| Kharchenko et al. (2012) | 304.14 | 37.64 | – | -1.78 | -3.67 | – |
| Loktin & Popova (2017) | 304.14 | 37.64 | – | -1.229 | -0.877 | -2.5 |
| Cantat-Gaudin et al. (2018) | 304.135 | 37.649 | 0.487 | -2.681 | -5.348 | – |
| Soubiran et al. (2018) | 304.135 | 37.649 | – | – | – | -29.11 |
| Dias et al. (2019) | 304.129 | 37.655 | 0.479 | -2.652 | -5.272 | -34.614 |
| Cantat-Gaudin et al. (2020) | 304.135 | 37.649 | 0.487 | -2.681 | -5.348 | – |
| Dias et al. (2021) | 304.138 | 37.649 | 0.489 | -2.694 | -5.353 | – |
| Rain et al. (2021) | 304.135 | 37.649 | 0.487 | -2.681 | -5.348 | – |
| Jaehnig et al. (2021) | 304.145 | 37.644 | 0.521 | -2.674 | -5.309 | – |
| Hunt & Reffert (2023) | 304.14 | 37.648 | 0.486 | -2.636 | -5.351 | -14.255 |
| Cavallo et al. (2024) | 304.152 | 37.606 | 0.486 | – | – | – |
| Celli et al. (2024) | 304.135 | 37.649 | – | – | – | – |
| Hunt & Reffert (2024) | 304.14 | 37.648 | 0.486 | -2.636 | -5.351 | -14.255 |
| Almeida et al. (2025) | 304.138 | 37.649 | – | – | – | – |
| UCC | 304.134 | 37.648 | 0.484 | -2.632 | -5.36 | -19.944 |
Estimated members
Explore data in Colab
Fundamental parameters
| Reference | Values |
|---|---|
| Dambis (1999) | E_B-V_=0.643, DM0=10.66, log_age_=7.0 |
| Dias et al. (2002) | E(B-V)=0.71, Dist=2398.0, Age=6.87 |
| Chen et al. (2003) | HDis=1732, Age=0.0 |
| Piskunov et al. (2008) | E(B-V)=0.6, Dist=1732, logt=6.8, logMA=3.042 |
| Kharchenko et al. (2012) | e_bv=0.521, distance=1764, log_age=7.15 |
| Loktin & Popova (2017) | E(B-V)=0.664, Dist=1736, logt=6.971 |
| Cantat-Gaudin et al. (2018) | dmode=1936.6 |
| Soubiran et al. (2018) | dmode=1936.6 |
| Dias et al. (2019) | E(B-V)=0.55, Dist=2124, logAge=6.999, Z=0.012 |
| Cantat-Gaudin et al. (2020) | AVNN=1.5, DistPc=2043.0, AgeNN=7.05 |
| Dias et al. (2021) | Av=1.813, Dist=1876, logage=7.068, [Fe/H]=0.182 |
| Rain et al. (2021) | E(B-V)=0.71, Dist=1936.6, log(Age)=6.87, NBSS=0 |
| Jaehnig et al. (2021) | dmode=1.916 |
| Hunt & Reffert (2023) | AV50=1.736, diffAV50=2.08, MOD50=11.44, logAge50=6.877 |
| Cavallo et al. (2024) | AV50=1.75, dMod50=11.28, logAge50=6.97, [Fe/H]50=0.07 |
| Celli et al. (2024) | Age=11.2, Mc=436.6 |
| Hunt & Reffert (2024) | MassJ=954.517, MassTot=993.586 |
| Almeida et al. (2025) | AV=1.813, Dist=1876, logAge=7.068, MassRk=474.8 |
Search coordinates in Bayestar19
Cluster region map
Objects with shared members
| Cluster | % | RA | DEC | Plx | pmRA | pmDE | Rv | UTI |
|---|---|---|---|---|---|---|---|---|
| CWWDL 10254 | 3.1 | 304.18 | 37.44 | 0.49 | -2.72 | -5.35 | -27.25 | 0.18 |
| CWWDL 13932 | 0.6 | 303.72 | 37.4 | 0.5 | -2.75 | -5.62 | -26.78 | 0.05 |