Delta shaped object moved from my 5 o’clock to my 11 o’clock position, moving silently, 130 KIAS, approximately 1500 AGL

I was standing on the second floor balcony looking for satellites and observing night air traffic when a delta shaped object moved from my 5 o’clock position to my 11 o’clock position. The object had three white lights. The lights were at the 3, 9, and 12 o’clock positions on the craft. The lights were a dim white almost yellowish light. The craft was completely silent and the airspeed appeared to be about 130 knots. The craft appeared to be about 1,500 ft. AGL. The color of the craft seemed to be a dark color maybe grey. I could see the faint outline of the craft against the night. sky. I lost sight of the aircraft as it continued toward the ocean. It disappeared behind the courtyard Marriott. Total time observed between 5 and 10 seconds.