It is well known that the GPS satellite orbits were selected to have a period of half a sidereal day
(23 hours 56 minutes 4 seconds) with a daily repeating ground track [23,24].
The GPS satellite constellation at a specific location repeats at intervals of approximately one sidereal day
. MSF is based on the period of the satellite constellation being about 8 s shorter than one sidereal day
(Choi et al., 2004).
A geosynchronous orbit can, however, be elongated and inclined with respect to the Earth's equator and still have a period equal to a sidereal day
, making the satellite appear to wander around a fixed point on the sky.
Heatrow beat Ample Note by three-length while Regalle was third and Sidereal Day
Two complete orbits total 23 h 56 min, a period known to astronomers as a sidereal day
, the exact time the Earth takes to complete one rotation on its axis.
The synodic day is distinguished from the sidereal day
, which is one complete rotation in relation to distant stars.
[[sigma]'.sub.C] = 6.32000 + 0.00237i, [[sigma]'.sub.f] =-0.0146011 +0.0001533, (in radians per sidereal day
) are the complex Chandler and FCN frequencies in celestial frame, respectively, [[sigma].sub.C] = 0.01962 + 0.00237, is the complex Chandler frequency in terrestrial frame and [a.sub.p] = 9.509 x [10.sup.-2], [a.sub.w] = 5.489 x [10.sup.-4] are dimensionless constants.
Jockey Gerald Avranche steered the favourite, owned by Al Nasseriyeh and trained by Alan Smith, past Danish Express while Thaqib was third and Sidereal Day
When she isn't teaching physics, Pamela Gay blogs about our changing understanding of the cosmos one sidereal day
at a time at www.starstryder.com.
an increase in d/dt([theta](t)) at sunrise, a decrease at sunset and a maximum deflection at noon) [1,2], having a period length of 1440.24 [+ or -] 2.60 min , indicating that it is related to solar and not sidereal time (length of sidereal day
: 1436 min, solar day: 1440 min).