{"slug": "pluto", "label": "Pluto", "wikipedia": "https://en.wikipedia.org/wiki/Pluto", "wikidata": "https://www.wikidata.org/wiki/Q339", "qid": "Q339", "description": "dwarf planet in the Solar System", "entries": 13, "years": 12, "span": [-560, 2015], "span_label": ["561 BCE", "2015 CE"], "topics": [{"title": "Science & Discovery", "count": 13}], "related": [{"slug": "neptune", "label": "Neptune", "shared": 4}, {"slug": "nasa", "label": "NASA", "shared": 2}], "items": [{"year": -560, "year_label": "561 BCE", "section": "Science & Discovery", "date": null, "text": "All eight solar system planets, including the now redefined dwarf planet Pluto, fall into planetary alignment.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1362661595#Events", "title": "561 BC", "revid": 1362661595, "section": "Events"}}, {"year": 1483, "year_label": "1483 CE", "section": "Science & Discovery", "date": "April 30", "text": "April 30 – Pluto moves inside Neptune's orbit until July 23, 1503, according to modern orbital calculations. At the time, neither planet has been discovered by Earth astronomers. The event of Pluto being closer to the Sun than Neptune will happen again during the period lasting from 1979 to 1999.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1369188840#April–June", "title": "1483", "revid": 1369188840, "section": "Events › April–June"}}, {"year": 1503, "year_label": "1503 CE", "section": "Science & Discovery", "date": "July 23", "text": "July 23 – Orbital calculations suggest that on this day Pluto moves outside Neptune's orbit, remaining there for 233 years.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1366510845#July–September", "title": "1503", "revid": 1366510845, "section": "Events › July–September"}}, {"year": 1618, "year_label": "1618 CE", "section": "Science & Discovery", "date": "July 20", "text": "July 20 – Pluto reaches its second most recent aphelion, according to sophisticated mathematical calculations. The next one occurs in 1866, and the following one will occur in 2113.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1365216026#July–September", "title": "1618", "revid": 1365216026, "section": "Events › July–September"}}, {"year": 1866, "year_label": "1866 CE", "section": "Science & Discovery", "date": "June 5", "text": "June 5 – Calculations indicate Pluto (not known at this time) reaches its only aphelion (furthest point from the Sun) between 1618 and August 2113.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1368829327#June", "title": "1866", "revid": 1368829327, "section": "Events › June"}}, {"year": 1915, "year_label": "1915 CE", "section": "Science & Discovery", "date": "March 19", "text": "March 19 – Pluto is photographed for the first time, but is not recognised for what it is.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1373518749#March", "title": "1915", "revid": 1373518749, "section": "Events › March"}}, {"year": 1930, "year_label": "1930 CE", "section": "Science & Discovery", "date": "February 18", "text": "February 18 – While studying photographs taken in January, Clyde Tombaugh confirms the existence of Pluto, a celestial body considered a planet until redefined as a dwarf planet in 2006.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1373315156#February", "title": "1930", "revid": 1373315156, "section": "Events › February"}}, {"year": 1978, "year_label": "1978 CE", "section": "Science & Discovery", "date": "June 22", "text": "June 22 – Charon, a satellite of Pluto, is discovered.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1370022681#June", "title": "1978", "revid": 1370022681, "section": "Events › June"}}, {"year": 1979, "year_label": "1979 CE", "section": "Science & Discovery", "date": "February 7", "text": "February 7 – Pluto moves inside Neptune's orbit for the first time since either was known to science.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1371786119#February", "title": "1979", "revid": 1371786119, "section": "Events › February"}}, {"year": 1999, "year_label": "1999 CE", "section": "Science & Discovery", "date": "February 11", "text": "February 11 – Pluto moves along its eccentric orbit further from the Sun than Neptune. It had been nearer than Neptune since 1979, and will become again in 2231.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1369767946#February", "title": "1999", "revid": 1369767946, "section": "Events › February"}}, {"year": 2006, "year_label": "2006 CE", "section": "Science & Discovery", "date": "August 24", "text": "August 24 – The International Astronomical Union defines 'planet' at its 26th General Assembly, removing Pluto's status as a planet and reclassifying it as a dwarf planet 76 years after its discovery. Ironically, this was in the same year when NASA sent its first probe to the celestial body.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1373069605#August", "title": "2006", "revid": 1373069605, "section": "Events › August"}}, {"year": 2006, "year_label": "2006 CE", "section": "Science & Discovery", "date": "January 19", "text": "January 19 – NASA launches the first interplanetary space probe to Pluto, the New Horizons.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1373069605#January", "title": "2006", "revid": 1373069605, "section": "Events › January"}}, {"year": 2015, "year_label": "2015 CE", "section": "Science & Discovery", "date": "July 14", "text": "July 14 – NASA's New Horizons spacecraft performs a close flyby of Pluto, becoming the first spacecraft in history to visit the distant world.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1373300271#July", "title": "2015", "revid": 1373300271, "section": "Events › July"}}]}