Orbital has been good enough to highlight the visibility from various locations here. The summary for the DC area:
- Antares will reach 5 degrees about 1 minute and 45 seconds after launch.
- It will reach a maximum elevation of about 13 degrees (your fist at the end of your outstretched arm is about 10 degrees mas o menos).
- The solid motor on the 2nd stage will be the most visible and will ignite at L+4 minutes and 23 seconds.