Cryptic crossword No 4,039

Across

1. Possible spacecraft from heart of sun starts for Orion (3)
2. Element of Vietnamese noodle soup's ours, we hear (10)
3. Way of tracking objects going in either direction (5)
4. Disorganised clan have a sudden, overwhelming influx (9)
5. Treated with great importance, beheaded and charged (7)
6. The Italian is number one after consumption in Caucasian capital (7)
7. Donald's desired accolade for stationing PA and/or Pence in Belize at random (5,5,5)
8. Cetacean perhaps becomes Prince, after week following leaderless Iran in revolt (7)
9. Hide from the French Resistance after two articles (7)
10. Renter in town houses must do this with their tenancy agreement! (5,4)
11. Complex piece of kit - it has three manuals! (5)
12. European Noblemen heard mountain giving way to fall asleep. (5,5)
13. Biblical king invokes marketing regulator (3)

Down

1. God's messenger supports left-leaning newspaper; he watches over you? (8,5)
2. Fritz's forces produce big smoke (6)
3. Words of reconciliation provide reason to use Viagra? (2,4,8)
4. Pirates, among others, are not all so malignant (6)
5. Too German about jaw with one American vegetable (8)
6. Decent golf score as holes two and three used to be in the shade? (7)
7. Prankster shakes up headless and tailless sperm with cocktail jar (9,5)
8. Average eating baked pâté - substitute one for a paella, maybe (13)
9. High chair excludes puppet (3,5)
10. Spooner's marine manure reportedly produces thick fog (3,4)
11. Long-legged birds' embraces turn her on sometimes (6)
12. Old woman banks grand with artificial intelligence prophet? (6)