Ok, I've found 12 different broad descriptors that you can use to help flesh out and describe a planet - as if you just stepped out of a Starship and on to the landing pad...
Let me know if I missed anything,
Scout
TIME OF DAY
Morning, Afternoon, Evening, Night
Variable for Multiple Stars
TIME OF YEAR
Spring, Summer, Fall, Winter
OUT OF ATMOSPHERE PHENOMENA
Stars, Suns, Other Planetary, Moons, Meteoric, Cometary, Other Natural, Artificial
ATMOSPHERIC/WEATHER CONDITIONS
Heat Distortion, Cloudy, Windy, Dusty, Snowing, Corrosive, Thunderstorms, Rainbow, Aurora, etc...
TEMPERATURE/HUMIDITY
Very Hot, Hot, Dry, Cool, Cold, Sticky, Very Cold, etc...
SMELLS/ODORS
Heated Asphalt, Cooking Food, Ocean Breeze, Diesel Smoke, Mountain Air, Pine Trees, etc...
SOUNDS
Birds Chirping, Electric Beeps, Mechanical Klanks, Insects Buzzing, Animals Howling, etc...
VEHICLES
Starships, Orbital Ships, Air Transports, Ground Transports, etc...
BUILDINGS
Clay Hut, Log Cabin Lodge, StratoScraper, TransAtmospheric Tower, etc...
PEOPLE
ANIMALS
SPECIFIC SIGHTS/EVENTS
Twin Moons over Cityscape, Meteor Shower, etc...