For a body to be circumpolar, the body should always be above the rational horizon i.e the body should not set. Therefore, a circumpolar body will have upper transit (upper meridian passage) which is above the elevated pole and lower transit (lower meridian passage) which is below the elevated pole.Condition required for a body to be circumpolar:Lat + Dec > 90° (For the body not to set)Latitude and declination should be the same name.1. North Latitude - Lat < Dec2. North Latitude - Lat > Dec3. South Latitude - Lat < Dec4. … [Read more...]