#AlBattānī's (📆 858 – 929) #astronomical 🌌 table is the earliest extant. His value for the #solar year of 365 days, 5 hours, 46 minutes and 24 seconds, is 2 minutes and 22 seconds ⏱️ from the accepted value. https://en.wikipedia.org/wiki/Al-Battani#Astronomy

Picture : https://commons.wikimedia.org/wiki/File:Latin_7266;_folio_78r_(BnF).jpg

📆 Aug 11, 2023 #NASA calls for the #amateur #astronomical community : #Observers 🔭 on #Earth can measure the distribution of bright features on #Uranus 🪐 or #Neptune. They can also track those features much longer ⏱️ than either #spacecraft. The #Hubble images will be made available in late September at #MAST *
https://www.nasa.gov/feature/all-eyes-on-the-ice-giants

* https://archive.stsci.edu

#NHIceGiants

The #Astronomical Journal, 📆 2022 October "The newly discovered 2022 AP7 is probably the largest potentially hazardous #NEO to #Earth found in several years, being some 1.5 km in size. There are likely several more 1 km sized Atira-type asteroids left to find, which probably have low semimajor axes and high inclinations, like 2021 PH27, making them hard to find for most #asteroid survey" https://iopscience.iop.org/article/10.3847/1538-3881/ac8cff