Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| NGC number | Object type | Constellation | Right ascension ( J2000 ) | Declination ( J2000 ) |
| --- | --- | --- | --- | --- |
| 2903.0 | Spiral galaxy | Leo | 09h32m09.7s | °30′03″ |
| 2915.0 | Irregular galaxy | Chamaeleon | 09h26m11.5s | °37′35″ |
| 2935.0 | Spiral galaxy | Hydra | 09h36m44.6s | °07′41″ |
| 2964.0 | Spiral galaxy | Leo | 09h42m54.2s | °50′49″ |
| 2968.0 | Irregular galaxy | Leo | 09h43m12.1s | °55′42″ |
| 2972.0 | Open cluster | Vela | 09h40m28.5s | °20′10″ |
| 2976.0 | Spiral galaxy | Ursa Major | 09h47m15.5s | °55′03″ |
| 2997.0 | Spiral galaxy | Antlia | 09h45m38.7s | °11′25″ |
| 2998.0 | Spiral galaxy | Ursa Major | 09h48m43.6s | °04′51″ |
| 2999.0 | Open cluster | Vela | 09h40m28.5s | °20′10″ |
| 3000.0 | Double star | Ursa Major | 09h49m | °08′ |
Question:
I want the NGC number for leo of irregular galaxy
Answer:
2968.0