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335:'s slow rotational speed and fast orbit around the Sun, its synodic rotation period of 176 Earth days is three times longer than its sidereal rotational period (sidereal day) and twice as long as its orbital period.
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planet, the same side always faces its parent star, and its synodic day is infinite. Its sidereal day, however, is equal to its orbital period.
188:. Because of the variation in the length of the synodic day, the days with the longest and shortest period of daylight do not coincide with the
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of the Earth. The longest and shortest synodic days' durations differ by about 51 seconds. The mean length, however, is 24 hours (with
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215:. Each synodic day, this gradual motion is a little less than 1° eastward (360° per 365.25 days), in a manner known as
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For Earth, the synodic day is not constant, and changes over the course of the year due to the
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38:"Solar day" redirects here. For the measurement of a solar day, see
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rotational period (sidereal day) and even its orbital period.
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David W. Hughes; B.D. Yallop; C.Y. Hohenkerk (15 June 1989).
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Time in Powers of Ten: Natural
Phenomena and Their Timescales
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Astronomy
Education at the University of Nebraska-Lincoln
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404:Gerard, T. Hooft; Stefan, Vandoren (12 May 2014).
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463:Monthly Notices of the Royal Astronomical Society
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268:or synodic rotation period) is the same as its
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327:Mercury (planet) § Spin-orbit resonance
117:'s synodic day is the time it takes for the
272:with Earth and the Sun (the period of the
81:The synodic day is distinguished from the
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156:of Earth's orbit around the Sun and the
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438:. The University of Nebraska-Lincoln
184:, which can also be seen in Earth's
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294:Venus § Orbit and rotation
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599:"How long is a day on Venus?"
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31:Not to be confused with
603:TE AWAMUTU SPACE CENTRE
582:"SATELLITES AND ORBITS"
385:Day length fluctuations
168:), and is the basis of
52:synodic rotation period
18:Synodic rotation period
459:"The Equation of Time"
345:Noon § Solar noon
228:Sun-synchronous orbits
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121:to pass over the same
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325:Further information:
292:Further information:
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410:. World Scientific.
264:'s synodic day (the
209:spherical background
479:1989MNRAS.238.1529H
278:synodic lunar month
139:Southern Hemisphere
131:Northern Hemisphere
538:"Equation Of Time"
192:near the equator.
180:solar time is the
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523:978-0-943396-51-4
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166:milliseconds
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473:: 1529–35.
213:fixed stars
135:declination
125:(a line of
48:synodic day
717:Categories
632:2021-06-03
608:2021-06-03
391:References
370:Solar time
300:retrograde
224:spacecraft
170:solar time
158:axial tilt
106:Solar time
76:solar time
40:Solar time
728:Astronomy
659:Astronomy
497:0035-8711
266:lunar day
252:Lunar day
190:solstices
127:longitude
58:) is the
56:solar day
339:See also
315:sidereal
246:The Moon
226:orbits,
222:Certain
205:ecliptic
197:coplanar
186:analemma
178:apparent
123:meridian
72:orbiting
645:Portals
475:Bibcode
333:Mercury
331:Due to
321:Mercury
256:Due to
230:, have
207:, on a
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276:, the
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70:it is
62:for a
60:period
671:Stars
623:"ESO"
585:(PDF)
469:(4).
307:Venus
288:Venus
199:with
115:Earth
96:Earth
568:NASA
550:2020
518:ISBN
493:ISSN
444:2020
412:ISBN
262:Moon
176:and
174:mean
68:star
50:(or
627:ESO
483:doi
467:238
305:of
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119:Sun
110:Day
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