NGC3139 (Galaxy)
 
                    From South El Monte , NGC3139 is visible in the dawn sky, rising at 02:51 (PDT) and reaching an altitude of 34° above the south-eastern horizon before fading from view as dawn breaks at around 06:08.
| 
                    Name
                    NGC3139                 | 
                    Object type
                    Galaxy                 | 
| Right ascension: | 10h10m [2] | 
| Declination: | −11°46' [2] | 
| Constellation: | Hydra | 
| Magnitude: | 14.62 (B) [2] 11.26 (J) [2] 10.58 (H) [2] 10.27 (K) [2] | 
| Hubble type: | S0 | 
| Distance: | 19.5 Mpc 63.6 Mlyr [1] | 
| Absolute mag (V): | -16.83 | 
All times shown in South El Monte local time.
 
                        