HSC 1957

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UTI:
UCC Trust Index

C_N C_dens C_C3 C_lit C_dup
0.26 0.19 0.38 0.25 0.92
C3
N_50
r_50
BC 26 6.2
Summary

HSC 1957 is a poorly populated, 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.

This is very likely a unique object, which shares a very small percentage of members with at least one previously reported entry.

Warning: the low UTI value and no obvious signs of duplication (C_dup=0.92) indicates that this is quite probably an asterism, moving group, or artifact, and not a real open cluster.

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Positions

Reference RA DEC Plx pmRA pmDE Rv
Hunt & Reffert (2023) 115.798 -28.173 0.337 -2.378 2.406 102.017
Cavallo et al. (2024) 115.746 -28.185 0.336 – – –
Hunt & Reffert (2024) 115.798 -28.173 0.337 -2.378 2.406 102.017
           
UCC 115.775 -28.159 0.343 -2.36 2.408 102.042
Galactocentric position Galactocentric position diagram

How are the galactocentric plots generated?

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Estimated members

HSC 1957 UCC
HSC 1957 HUNT23

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Fundamental parameters

Reference Values
Hunt & Reffert (2023) AV50=1.533, diffAV50=2.242, MOD50=12.082, logAge50=8.217
Cavallo et al. (2024) AV50=1.76, dMod50=12.31, logAge50=7.99, [Fe/H]50=0.2
Hunt & Reffert (2024) MassJ=346.756, MassTot=608.441

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Cluster region map

Objects with shared members

Cluster % RA DEC Plx pmRA pmDE Rv UTI
CWWDL 13327 7.7 115.7 -27.88 0.41 -2.27 2.27 – 0.06