HSC 639
Summary
HSC 639 is a sparse, very loose object of low C3 quality. It is located at a moderate distance from the Sun, below the mid-plane. It was recently reported in the literature.
Warning: contains less than 25 stars with P>0.5 estimated.
Warning: the low UTI value and no obvious signs of duplication (C_dup=1.0) indicates that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.
Positions
| Reference | RA | DEC | Plx | pmRA | pmDE | Rv |
|---|---|---|---|---|---|---|
| Hunt & Reffert (2023) | 312.409 | 40.461 | 0.216 | -2.911 | -4.235 | -46.033 |
| Cavallo et al. (2024) | 312.393 | 40.441 | 0.218 | – | – | – |
| Hunt & Reffert (2024) | 312.409 | 40.461 | 0.216 | -2.911 | -4.235 | -46.033 |
| UCC | 312.41 | 40.444 | 0.204 | -2.961 | -4.208 | -44.528 |
Estimated members
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Fundamental parameters
| Reference | Values |
|---|---|
| Hunt & Reffert (2023) | AV50=4.001, diffAV50=3.053, MOD50=12.96, logAge50=8.516 |
| Cavallo et al. (2024) | AV50=3.65, dMod50=13.29, logAge50=8.31, [Fe/H]50=0.09 |
| Hunt & Reffert (2024) | MassJ=10116.7, MassTot=11685.6 |
Search coordinates in Bayestar19