The position of the Sun and the shape of the Earth

Worldwide observation of the Sun and measurement of its position above the horizon
April 24^th, 2009
Noon measurements

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Location noon time in UT noon altitude of the sun resulting latitude resulting longitude

Essen, Germany 11:30:05 50.8° 52.2° N 6.9° E

Essen, Germany 11:26:04 51.39° 51.61° N 7.88° E

Villa Ballester 15:54 42.7° 34.3° S 59.1° W

Craiova, Romania 10:22:55 57.62° 44.71° N 24.27° E

Location	noon time in UT	noon altitude of the sun	resulting latitude	resulting longitude
Essen, Germany	11:30:05	50.8°	52.2° N	6.9° E
Essen, Germany	11:26:04	51.39°	51.61° N	7.88° E
Villa Ballester	15:54	42.7°	34.3° S	59.1° W
Craiova, Romania	10:22:55	57.62°	44.71° N	24.27° E

The geographical coordinates have been calculated using the following approximate fomulas (see a page of our Venus project):

In these equations, α_S is the right ascension of the sun at 12:00 UT, θ_G the local sideral time of Greenwich at this time, t_noon the measured time of local noon and h_S the corresponding altitude of the sun.

Udo Backhaus

last change: 28.04.2009

The position of the Sun and the shape of the Earth

Worldwide observation of the Sun and measurement of its position above the horizon April 24th, 2009 Noon measurements

Worldwide observation of the Sun and measurement of its position above the horizon
April 24^th, 2009
Noon measurements