You observe the planet Jupiter at a sextant altitude (hs) of 66°27.6' on 26 May. The index error is 5.2' on the arc. The height of eye is 52 feet. What is the observed altitude (Ho)?

Question

You observe the planet Jupiter at a sextant altitude (hs) of 66&deg;27.6' on 26 May. The index error is 5.2' on the arc. The height of eye is 52 feet. What is the observed altitude (Ho)?

Accepted Answer

Option D: 66&deg;15.0'. Observed altitude (Ho) is derived from sextant altitude (hs) by applying Index Error (IE) to find apparent altitude (ha), then subtracting atmospheric refraction correction from Bowditch tables. For Jupiter, apply standard lower limb or center corrections to yield 66°15.0'.

You observe the planet Jupiter at a sextant altitude (hs) of 66&deg;27.6' on 26 May. The index error is 5.2' on the arc. The height of eye is 52 feet. What is the observed altitude (Ho)?

You observe the planet Jupiter at a sextant altitude (hs) of 66°27.6' on 26 May. The index error is 5.2' on the arc. The height of eye is 52 feet. What is the observed altitude (Ho)?