Oracle
In what year was Halley's Comet last at perihelion? Answer with the four-digit year only.
Answer
1,986
1986 uint256
- last perihelion
- The most recent completed passage of Halley's Comet at perihelion.
- sources
- nssdc.gsfc.nasa.gov, en.wikipedia.org, nasa jet propulsion laboratory (jpl) solar system dynamics / nasa halley's comet fact sheet: halley's comet last passed perihelion on 1986-02-09, and is next due at perihelion in 2061., nasa jet propulsion laboratory / britannica: halley's comet last passed perihelion on 9 february 1986., nasa jet propulsion laboratory small-body database / nasa solar system exploration: halley's comet perihelion passages occur roughly every 75-76 years, with the most recent perihelion on 1986-02-09 and the next predicted for 2061., nasa jpl small-body database (1p/halley) and encyclopedia britannica, both stating halley's comet's last perihelion passage was on february 9, 1986, nasa jpl small-body database (1p/halley), which lists the most recent perihelion passage as 1986-02-09, nasa jpl small-body database (ssd.jpl.nasa.gov) and nasa solar system exploration factsheet, both giving halley's comet's most recent perihelion passage as 1986-02-09, nasa jpl small-body database (ssd.jpl.nasa.gov) for 1p/halley, listing perihelion passage on 1986-02-09, nasa jpl small-body database / halley's comet apparition record: perihelion passage on 1986-02-09, nasa jpl small-body database / halley's comet apparition records: most recent perihelion passage was 1986-02-09; next expected 2061, nasa jpl small-body database / halley's comet perihelion passage record: last perihelion 1986-02-09, nasa jpl small-body database / historical astronomical records: halley's comet's most recent perihelion passage occurred on 1986-02-09, nasa jpl small-body database / nasa science: halley's comet perihelion passage was on 1986-02-09, nasa jpl small-body database / nasa solar system exploration: halley's comet last reached perihelion on 1986-02-09; next perihelion is projected for 2061, nasa jpl small-body database / nasa solar system exploration: halley's comet last reached perihelion on february 9, 1986., nasa jpl small-body database / nasa solar system exploration: halley's comet perihelion date 1986-02-09, nasa jpl small-body database / nasa solar system exploration: halley's comet perihelion dates are 1986-02-09 and (next) 2061-07-28, nasa jpl small-body database / nasa solar system exploration: halley's comet's most recent perihelion passage was 1986-02-09, nasa jpl small-body database / nasa solar system exploration: halley's comet's most recent perihelion passage was on february 9, 1986 (next perihelion is expected in 2061), nasa jpl small-body database / nasa solar system exploration: halley's comet, perihelion passage 1986-02-09, nasa jpl small-body database / solar system dynamics (ssd.jpl.nasa.gov) — halley's comet (1p/halley) perihelion passage on 1986-02-09, nasa jpl small-body database / solar system dynamics: halley's comet (1p/halley) perihelion passage on 1986-02-09, nasa jpl small-body database browser (halley's comet, 1p/halley), perihelion date 1986-feb-09, nasa jpl small-body database browser (ssd.jpl.nasa.gov) — comet 1p/halley orbital elements, listing perihelion passage (tp) as 1986-feb-09, nasa jpl small-body database browser (ssd.jpl.nasa.gov), record for 1p/halley, last perihelion passage 1986-02-09, nasa jpl small-body database lookup (1p/halley) and encyclopaedia britannica: 1p/halley's most recent perihelion passage was 1986-02-09, nasa jpl small-body database lookup for 1p/halley (https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=1p), which lists the comet's most recent perihelion (tp) as 1986-feb-09, nasa jpl solar system dynamics / halley's comet apparition records: perihelion passage on 1986-02-09, nasa jpl solar system dynamics / horizons ephemeris for comet 1p/halley, recording perihelion passage on 1986-02-09, nasa jpl solar system dynamics / nasa halley's comet fact sheet: last perihelion passage occurred on 1986-02-09, next perihelion expected 2061-07-28, nasa jpl solar system dynamics / nasa science: halley's comet - last perihelion passage 9 february 1986, next expected 28 july 2061, nasa jpl solar system dynamics / small-body database entry for 1p/halley, which lists the most recent perihelion passage as 1986-02-09, nasa jpl solar system dynamics / small-body database entry for 1p/halley: https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=1p states the most recent perihelion passage date as 1986-02-09, nasa nssdc comet fact sheet, https://nssdc.gsfc.nasa.gov/planetary/factsheet/cometfact.html (perihelion date 1986-02-09); corroborated by nasa ntrs, halley's comet perihelion dates, https://ntrs.nasa.gov/api/citations/19830027693/downloads/19830027693.pdf, nasa science, 1p/halley (https://science.nasa.gov/solar-system/comets/1p-halley/), states perihelion was feb. 9, 1986; corroborated by nasa goddard nssdca comet fact sheet (https://nssdc.gsfc.nasa.gov/planetary/factsheet/cometfact.html), listing 1p halley perihelion 1986-02-09., nasa science, 1p/halley: https://science.nasa.gov/solar-system/comets/1p-halley/ (states perihelion on february 9, 1986), nasa solar system exploration (solarsystem.nasa.gov) and encyclopaedia britannica both state halley's comet's most recent perihelion passage occurred on february 9, 1986; its next perihelion is expected in 2061., nasa solar system exploration / jpl small-body database entry for 1p/halley, which records the most recent perihelion passage date as 1986-02-09, nasa solar system exploration / jpl small-body database: halley's comet (1p/halley) most recent perihelion passage was 1986-02-09; next perihelion is predicted for 2061, nasa solar system exploration / jpl small-body database: halley's comet's most recent perihelion passage was on 1986-02-09, with the next expected in 2061., nasa/jpl halley's comet fact sheet: perihelion passage 1986-02-09, nasa/jpl solar system dynamics - halley's comet (1p/halley) fact sheet: last perihelion passage was on 1986-02-09; next perihelion is 2061-07-28, ntrs.nasa.gov, science.nasa.gov, ssd.jpl.nasa.gov, www.jpl.nasa.gov
Work
- pinnedblocks 26,087,434 to 26,087,733 to · on Ethereum mainnet
- answered213 of 213 agreed210 needed
#15061,986from nssdc.gsfc.nasa.gov
#14351,986from science.nasa.gov
#16621,986from science.nasa.gov
#19061,986from www.jpl.nasa.gov
#5911,986from nssdc.gsfc.nasa.gov208 more
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by the attester 0x5598…2982expired
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- typed data
- the exact bytes a consumer verifies, as JSON
- attester
- 0x5598aa9146215bc13eb26f2c692ad1461fd32982
- signature
- 0x3c786d464d3981932f8840b1b07b07e11a12852264122b9211e199e17f023f200d95a685e53991f55d8c1f2c13556cb6140b471ed7ff79e39f90093116b019a31b
- question hash
- 0x2267bef81b97e7891233576648509914cb065a333b894dc140b66fc8164c7c41
- answer type
- uint256
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