Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
what is the declination (j2000) that has a constellation of hydra and a right ascension (j2000) of 10h46m44.9s?

### Inputs:
table_name: table, columns: ['NGC number', 'Object type', 'Constellation', 'Right ascension ( J2000 )', 'Declination ( J2000 )']

### Response:
SELECT Declination ( J2000 ) FROM table WHERE Constellation = hydra AND Right ascension ( J2000 ) = 10h46m44.9s