Preheat oven to 450°F. Place asparagus in medium bowl. Pour enough cold water over asparagus to cover; Let stand 15 minutes. Drain. Spread asparagus in a 13x9x2-inch baking pan; drizzle with oil. Roast asparagus until crisp-tender, turning occasionally, about 10 minutes. Transfer asparagus to platter; Cool.
Using a sharp knife, cut and peel white pith from tangerines. Cut between membranes to release segments. Arrange tangerine segments atop asparagus. Whisk tangerine juice, vinegar, sesame oil, peel, garlic and ginger in a small bowl to blend. Season dressing to taste with salt and pepper. Drizzle over asparagus. Sprinkle with green onion tops and peanuts and serve.
Keyword asparagus, ginger, green onion, orange, salad, tangerine