Mickle apologized to his victims and said he wished he could make them whole again, according to O'Neill. Defense attorney Michael P. Parkinson could not be reached for comment.
The mothers of two of his victims gave victim-impact statements to the judge, describing a predator who abused the trust he earned as a volunteer soccer coach to manipulate the victims.
Assistant District Attorney Gwenn Cujdik said Mickle was so brazen that he attended one girl's field hockey game in October 2009 and was sending her text messages as her family sat cheering in the stands.
Mickle was arrested in March 2010 after a 16-year-old reported his overtures to police. A sometime volunteer soccer coach for Lighthouse Soccer Club, a nonprofit Northeast youth group, Mickle did not victimize the girls he coached, authorities said.
Prosecutors said Mickle posed as a 17- or 18-year-old named Vince, Vinnie or Vin, befriended the girls online, and then began "grooming them" for sexual encounters. In some cases, authorities said, Mickle sent the girls photos of his penis and in others he requested and received seminude photos of the teens.
Among the charges to which Mickle pleaded guilty were 15 counts of child pornography involving 15 images of children — including some of his victims — found on Mickle's computer in a March 4, 2010, police search of his house.
In February, Mickle waived his right to a court hearing and agreed to be classified as a "sexually violent predator" under Pennsylvania's version of Megan's Law.
According to Cujdik, that classification is the toughest under state law. When he completes his prison term, Mickle will be required to report his whereabouts for the rest of his life. On release, she said, he must immediately report to probation and parole and provide the state police with the address where he will live.
Every year thereafter, Cujdik said, Mickle will get a date on which he must reregister with state authorities verifying his address, employment and providing a new photograph. If he changes address or job, he has 48 hours to notify authorities.
Mickle will also be required to attend monthly counseling sessions when released.
The penalties for failing to register or providing inaccurate information are severe. Cujdik said a first failure to register carries a 5- to 10-year prison term; the second failure to register, or providing any inaccurate information, carry a 10- to 20-year prison term.
Contact Joseph A. Slobodzian at 215-854-2985, email@example.com, or follow him on Twitter @JoeSlobo