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You will also find that which constellation an object falls in depends on the date. The boundaries as originally defined in 1930 and based on B1875 co-ordinates followed lines of constant RA and Dec. Precession means the boundaries today are not so simple. Vizier catalog VI/49 has files of co-ordiates for the boundaries. The B1875 version has 1565 rows defining the constellation corners. The J2000 version has 53684 rows to approximate the precessed boundaries.
Proper motion can also change into which constellation an object falls.
The most recent version of the NGC+IC catalog lists 60 objects as being in Carina.
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