The 23e century will begin on January 1st, 2201 and will finish on December 31st, 2300.

Astronomical events envisaged with the 23e century

• 2221 : Triple conjunction between Mars and Saturn.
• December 2nd, 2223: with 12:32 UTC Mars will occult Jupiter.
• Pluton will arrive of mouveau at the same distance from the Sun as Neptune, lasting September 2226.
  Between 2227 and 2247, Pluton will be closer to the Sun than Neptune.
  the last time that arrived, it was between 1979 and 1999.
• 2238/2239: Triple conjunction between Jupiter and Saturne.
  last triple conjunction between Jupiter and Saturne occurred in 1981.
• August 12th, 2243: with 04:52 UTC, Venus will occult Saturn.
• June 11th, 2247: Transit of Venus.
• March 4th, 2251: with 10:52 UTC, Venus will occult Uranus.
• August 1st, 2253: Mercure will occult Régulus.
  the last screening of Régulus by Mercure occurred on August 31st, 364 before our era.
• June 9th, 2255: Venus transit.
• March 29th, 2257: Eris will arrive at its Périhélie for the first time since its discovery.
• 2279: Triple conjunction between Jupiter and Saturne.
• October 6th, 2271: Conjunction very brought closer between Venus and Régulus, possible screening of Régulus by Venus.
• Sunday, August 28, 2287: The distance between Mars and the Earth will be with its minimum.
  It will be the bringing together (of perihelic Opposition) shortest since on Wednesday, August 27, 2003.