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  2. Sidereal time - Wikipedia

    en.wikipedia.org/wiki/Sidereal_time

    The slightly longer stellar period is measured as the Earth rotation angle (ERA), formerly the stellar angle. [4] An increase of 360° in the ERA is a full rotation of the Earth. A sidereal day on Earth is approximately 86164.0905 seconds (23 h 56 min 4.0905 s or 23.9344696 h).

  3. Hippocamp (moon) - Wikipedia

    en.wikipedia.org/wiki/Hippocamp_(moon)

    Hippocamp completes one revolution around Neptune every 22 hours and 48 minutes (0.95 days), corresponding to a semi-major axis, or orbital distance of 105,283 km (65,420 mi). [5] For comparison, this distance is approximately 4.3 Neptune radii, or just over a quarter of the Earth–Moon distance.

  4. Rotation period (astronomy) - Wikipedia

    en.wikipedia.org/wiki/Rotation_period_(astronomy)

    Rotation period with respect to distant stars, the sidereal rotation period (compared to Earth's mean Solar days) Synodic rotation period (mean Solar day) Apparent rotational period viewed from Earth Sun [i] 25.379995 days (Carrington rotation) 35 days (high latitude) 25 d 9 h 7 m 11.6 s 35 d ~28 days (equatorial) [2] Mercury: 58.6462 days [3 ...

  5. Seasons on planets - Wikipedia

    en.wikipedia.org/wiki/Seasons_on_planets

    The start and end dates of a season on any planet of the Solar System depends on same factors valid on Earth, but which have different values on different planets: North Pole direction (rotation axis direction) Vernal equinox direction; Orbit eccentricity; Year duration; Orbit plane inclination

  6. Timeline of discovery of Solar System planets and their moons

    en.wikipedia.org/wiki/Timeline_of_discovery_of...

    [3] Earth: 3rd Planet: Earth is the third planet from the Sun and the subject of historical misconception for centuries. [4] [5] Earth was never formally 'discovered' because it was never an unrecognized entity by humans. However, its shared identity with other bodies as a "planet" is a historically recent discovery.

  7. (612533) 2002 XV93 - Wikipedia

    en.wikipedia.org/wiki/(612533)_2002_XV93

    (612533) 2002 XV 93 (provisional designation 2002 XV 93) is a trans-Neptunian object (TNO) with an absolute magnitude of 5.4. [5] A 2:3 orbital resonance with Neptune makes it a plutino. [2] It has been observed with precovery images back to 1990. [3]

  8. TV Premiere Dates 2023: The Full List of Shows - AOL

    www.aol.com/tv-premiere-dates-2023-full...

    Evolution EarthSeason 1 (PBS) September 7 Star Trek: Lower Decks — Season 4 (Paramount+) Virgin River — Season 5, Part 1 (Netflix) September 8 The Changeling — Limited (Apple TV+ ...

  9. How the Universe Works - Wikipedia

    en.wikipedia.org/wiki/How_the_Universe_Works

    The third season aired between July 9 and September 3, 2014. [8] The fourth season premiered on July 14, 2015, as part of the Science Channel's "Space Week," in honor of New Horizons' flyby of Pluto that day; the season ran through September 1, 2015. The show's fifth season aired from November 22, 2016, through February 7, 2017. The sixth ...