Spacetrack Directory Name | MERIDIAN 8 |
Follow MERIDIAN 8 | MERIDIAN 8 Tracker |
Pass predictions MERIDIAN 8 | Pass predictions MERIDIAN 8 |
Orbit launches | 2019-07-30 (5 years ago) |
Days in orbit | 1942 |
Country/organisation of origin | Commonwealth of Independent States (former USSR) (CIS) |
Starting point | PLMSC (Plesetsk Missile and Space Complex, Russia) |
Categories | |
Perigee | 1454 km |
Apogee | 38902 km |
Orbit slope (inclination) | 62.74° |
Laps per day | 2 |
Height MERIDIAN 8 | 26261.8 km |
Astigmatism is a type of refractive error in which the eye does not focus light evenly on the retina. This results in distorted or blurred vision at any distance. Other symptoms can include eyestrain, headaches, and trouble driving at night. If it occurs in early life it can later result in amblyopia.The cause of astigmatism is unclear, however it is believed to be partly related to genetic factors. The underlying mechanism involves an irregular curvature of the cornea or abnormalities in the lens of the eye. Diagnosis is by an eye exam.Three treatment options are available glasses, contact lenses, and surgery. Glasses are the simplest. Contact lenses can provide a wider field of vision. Refractive surgery permanently changes the shape of the eye.In Europe and Asia astigmatism affects between 30 and 60% of adults. People of all ages can be affected by astigmatism. Astigmatism was first reported by Thomas Young in 1801.
satellite MERIDIAN 8 Date of exalting 30.07.2019y. Average height of ISS MERIDIAN 8 hundred 26261.8 km. Average velocity MERIDIAN 8 is 12178.39 km/h. Inclination MERIDIAN 8 satellite 62.7°.