Date: 201902
Local time of day: 1801-2400
Location: ZZZ.Airport, US
Flight conditions: IMC
Weather elements / visibility: Snow
Light: Night
Aircraft: B737 Undifferentiated or Other Model
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Parked
ATC / advisory: Ramp ZZZ
Second aircraft: B737 Undifferentiated or Other Model
Reporter organization: Air Carrier
Reporter function: Captain; Pilot Flying
Reporter qualification: Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Human factors: Time Pressure; Situational Awareness
Anomaly: Ground Event / Encounter Aircraft
Detector: Person Flight Crew
When detected: Taxi
Result: Aircraft Aircraft Damaged; Flight Crew Returned To Gate; General Flight Cancelled / Delayed
Contributing factors: Human Factors; Staffing
Primary problem: Human Factors

Narrative: Windy and snowy night at ZZZ. Boarded passengers and closed door. Got deiced and anti-iced at gate. Deicers couldn't deice our radome since the deicing truck couldn't get to the front of the aircraft. Deicer said they'd finish the deicing [and] spray the radome upon our push into the alley. We called for push. Ramp Tower cleared us to push. To the best of my knowledge; the Ramp Controller's exact words were; ''Cleared to push.'' The clearance was without qualification or further detail. Simply; 'Cleared to push.' I repeated same to our ground crew. We got pushed into the snowy alley. After resetting brakes; I asked ground crew to stay on interphone for a moment until I could re-establish radio contact with deicer (that is; so as to ask him if he needed engines off for the radome deicing). I believe the deicer's reply was that it didn't matter.I then cleared our ground crew to disconnect interphone; got pin and salute; etc.  We started engines and deicer deiced our radome. Upon receipt of deicer's final report; and ground crew now gone; I was now able to toggle up Comm 2 audio (Ramp Tower). Our aircraft status was: stationary; parking brake parked; both engines running; and deicing and anti-icing fully completed. About the first thing I heard over Comm 2 was someone talking about having hit something.I initially thought it was a deicing truck (not ours; of course) somewhere out on the ramp that was discussing having hit something; but it turned out that there was now a [Company] 737 off our right wing - at our 3:30 position. He was telling us that as he had been taxiing forward (from a position behind us); the leading edge of his left wingtip (winglet) had contacted the aft edge of the winglet on our right wingtip.We remained parked - did not move - and called for [Company] Aircraft Maintenance to come out and inspect us. They came out and confirmed the aforementioned contact and confirmed some visible damage - but also said that our current state was safe: ''OK to get tugged back to the gate.'' We called for a tug and crew to tug us back to a gate. Due to the 28-knot winds gently buffeting our aircraft; we had not been aware of wingtip contact. There had been no jolt or bump perceptible to us (or; if there was a slight bump or jolt; it had been disguised by the wind.). Normal deplaning of passengers.




Synopsis: Air carrier Captain reported their aircraft being struck by another aircraft while sitting still on the ramp.