Difference between revisions of "Template:Large near earth asteroid flybys 10LD"
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| − | |- | + | | title = Chronology of close approaches of large near-Earth objects since 1981 <sup>(A)</sup> |
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! rowspan=2 width=150 | [[Potentially hazardous asteroid|PHA]] | ! rowspan=2 width=150 | [[Potentially hazardous asteroid|PHA]] | ||
! rowspan=2 width=100 | Date | ! rowspan=2 width=100 | Date | ||
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! colspan=8 style="text-align: left; padding: 12px 8px; font-weight: normal;"| <sup>(A)</sup> This list includes near-Earth approaches of less than 10 [[Lunar distance (astronomy)|lunar distances]] (LD) of objects with [[Absolute magnitude (H)|H]] brighter than 16.<br /><sup>(B)</sup> [[Curve fitting|Nominal]] geocentric distance from the center of Earth to the center of the object (Earth has a [[Earth radius|radius]] of approximately 6,400 km).<br /><sup>(C)</sup> Diameter: estimated, theoretical mean-diameter based on ''H'' and [[Geometric albedo|albedo]] range between X and Y.<br /><sup>(D)</sup> Reference: data source from the [[JPL SBDB]], with [[Astronomical unit|AU]] converted into LD (1 AU≈390 LD)<br /><sup>(E)</sup> Color codes: {{Legend2|#e2e2e2|unobserved at close approach|border=1px #999 solid}} {{Legend2|#fff|observed during close approach|border=1px silver solid}} {{Legend2|#FCEED4|upcoming approaches|border=1px silver solid}} | ! colspan=8 style="text-align: left; padding: 12px 8px; font-weight: normal;"| <sup>(A)</sup> This list includes near-Earth approaches of less than 10 [[Lunar distance (astronomy)|lunar distances]] (LD) of objects with [[Absolute magnitude (H)|H]] brighter than 16.<br /><sup>(B)</sup> [[Curve fitting|Nominal]] geocentric distance from the center of Earth to the center of the object (Earth has a [[Earth radius|radius]] of approximately 6,400 km).<br /><sup>(C)</sup> Diameter: estimated, theoretical mean-diameter based on ''H'' and [[Geometric albedo|albedo]] range between X and Y.<br /><sup>(D)</sup> Reference: data source from the [[JPL SBDB]], with [[Astronomical unit|AU]] converted into LD (1 AU≈390 LD)<br /><sup>(E)</sup> Color codes: {{Legend2|#e2e2e2|unobserved at close approach|border=1px #999 solid}} {{Legend2|#fff|observed during close approach|border=1px silver solid}} {{Legend2|#FCEED4|upcoming approaches|border=1px silver solid}} | ||
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Latest revision as of 12:53, 30 October 2018
Chronology of close approaches of large near-Earth objects since 1981 (A)
| PHA | Date | Approach distance in lunar distances | Abs. mag (H) |
Diameter (C) (m) |
Ref (D) | ||
|---|---|---|---|---|---|---|---|
| Nominal (B) | Minimum | Maximum | |||||
| Template:Mpl | 1981-05-18 | 2.761 | 2.760 | 2.761 | 16.0 | 1333–4306 | data |
| Template:Mpl | 1989-08-01 | 7.034 | 6.843 | 7.224 | 16.0 | 1333–4306 | data |
| 4179 Toutatis | 1992-12-08 | 9.399 | 9.399 | 9.399 | 15.30 | 2440–2450 | data |
| 4179 Toutatis | 2004-09-29 | 4.031 | 4.031 | 4.031 | 15.30 | 2440–2450 | data |
| Template:Mpl | 2038-11-16 | 7.719 | 7.719 | 7.719 | 15.4 | 1746–4394 | data |
| (4953) 1990 MU | 2058-06-05 | 8.986 | 8.984 | 8.988 | 14.1 | 3199–10329 | data |
| 4179 Toutatis | 2069-11-05 | 7.725 | 7.724 | 7.725 | 15.30 | 2440–2450 | data |
| Template:Mpl | 2079-04-16 | 4.611 | 4.611 | 4.612 | 15.8 | 1462–4721 | data |
| Template:Mpl | 2089-06-25 | 6.936 | 6.935 | 6.938 | 15.7 | 1531–4944 | data |
| 3200 Phaethon | 2093-12-14 | 7.714 | 7.709 | 7.718 | 14.6 | 4900–5300 | data |
| Template:Mpl | 2127-04-16 | 6.536 | 6.510 | 6.563 | 15.8 | 1462–4721 | data |
| (A) This list includes near-Earth approaches of less than 10 lunar distances (LD) of objects with H brighter than 16. (B) Nominal geocentric distance from the center of Earth to the center of the object (Earth has a radius of approximately 6,400 km). (C) Diameter: estimated, theoretical mean-diameter based on H and albedo range between X and Y. (D) Reference: data source from the JPL SBDB, with AU converted into LD (1 AU≈390 LD) (E) Color codes: unobserved at close approach observed during close approach upcoming approaches | |||||||