Schlagintweit, Hermann von; Schlagintweit, Adolf; Schlagintweit, Robert von: Results of a scientific mission to India and High Asia: undertaken between the years MDCCCLIV and MDCCCLVIII, by order of the court of directors of the hon. East India Company (Band 1): Astronomical determinations of latitudes and longitudes and magnetic observations: during a scientific mission to India and High Asia (Leipzig, 1861)

group i. assam and khassia hills. 139

Jupiter.

h m B o I II o I II

3 10 47 234 44 20 24 42 45

3 29 44 238 4 25 21 '0 50

O

( 757-1 rnillim. m „ .. ( 18-5 C.

Rarom. < lemp. 01 Air { ^ ,

( 29-808 inches (65-3 Fahr.

Co-ordinates of Jupiter, interpolated for the time of the lunar observation:
3h 21-' 13s 236° 34'-4 22° 40'"6.

Corrections for reducing the apparent altitudes of the Moon and Jupiter to true
geocentric altitudes:

for Jupiter for Moon

Refraction — 2'-2 — 0'*6

Parallax O'-O + 33'-2

o /

Jupiter, true Altitude........................... 22 38 "4

Moon „ „........................... 56 36-1

Arc of the Almucantarat......................... 22 46-8

Reduced Distance of Centres ...................... 37 50-8

b in s

to which corresponds a Mean Greenwich Time of......... 3 30 20 p.m.

Mean Local Time............................. 9 36 50

(referred to December 13, the Rate I. = losing 0s-17 would give
a correction of — 3s, which, however, does not affect the result
within the 10s adopted as limit for our longitudes).

Meridional Difference in Time ..................... 6 6 30

therefore,

Longitude East Green...........................91° 37' 30"

This result happens to agree, beyond the limits which could have been expected
with the longitude of the Gr. T. S. = 91° 43' 45" East Green.

Meridian.

Calculated from Observations of the Sun by the second approximation . . 0° 3'-8.

No. 5. Chlrra Punji, in the Khassia Hills.

This station has been made the chief place for the political superintendence of
the Khassia Hills and of Kachar. It is situated on the eastern margin of the Khassia

18s