Difference between revisions of "Template:Large near earth asteroid flybys 2LD"

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imported>Renerpho
(Size estimate for 2015 TB145, from Müller, 2017 (https://www.aanda.org/articles/aa/pdf/2017/02/aa29584-16.pdf), uncertainty taken from LCDB (http://alcdef.org))
imported>Rfassbind
(wrap table into collapsible Template:hidden begin)
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| title = History of close approaches of large near-Earth objects since 1908&thinsp;<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 2 [[Lunar distance (astronomy)|lunar distances]] (LD) of objects with [[Absolute magnitude (H)|H]] brighter than 20.<br /><sup>(B)</sup> [[Curve fitting|Nominal]] geocentric distance from the center of Earth to the center of the object (Earth has a radius of approximately 6,400&nbsp;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&nbsp;AU≈390&nbsp;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 2 [[Lunar distance (astronomy)|lunar distances]] (LD) of objects with [[Absolute magnitude (H)|H]] brighter than 20.<br /><sup>(B)</sup> [[Curve fitting|Nominal]] geocentric distance from the center of Earth to the center of the object (Earth has a radius of approximately 6,400&nbsp;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&nbsp;AU≈390&nbsp;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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Revision as of 12:55, 30 October 2018

History of close approaches of large near-Earth objects since 1908 (A)
PHA Date Approach distance in lunar distances Abs. mag
(H)
Diameter (C)
(m)
Ref (D)
Nominal(B) Minimum Maximum
Template:Mpl 1914-12-31 0.606 0.604 0.608 19.4 279–900 data
Template:Mpl 1918-09-17 0.911 0.909 0.913 17.9 556–1795 data
Template:Mpl 1925-08-30 0.903 0.901 0.905 18.5 443–477 data
69230 Hermes 1937-10-30 1.926 1.926 1.927 17.5 700-900[1] data
69230 Hermes 1942-04-26 1.651 1.651 1.651 17.5 700-900[1] data
Template:Mpl 1975-01-31 1.762 1.761 1.762 18.1 507–1637 data
Template:Mpl 2002-08-18 1.371 1.371 1.371 19.0 335–1082 data
Template:Mpl 2006-07-03 1.125 1.125 1.125 19.3 292–942 data
Template:Mpl 2015-10-31 1.266 1.266 1.266 20.0 620-690 data
Template:Mpl 2027-08-07 1.014 1.010 1.019 17.9 556–1793 data
Template:Mpl 2028-06-26 0.647 0.647 0.647 18.2 921–943 data
99942 Apophis 2029-04-13 0.0981 0.0963 0.1000 19.7 310–340 data
Template:Mpl 2072-07-26 1.216 1.215 2.759 18.8 367–1186 data
Template:Mpl 2072-10-17 1.875 1.865 1.886 19.6 254–820 data
(163132) 2002 CU11 2080-08-31 1.655 1.654 1.656 18.5 443–477 data
(416801) 1998 MZ 2116-11-26 1.068 1.068 1.069 19.2 305–986 data
Template:Mpl 2140-12-01 0.634 0.631 0.637 19.3 427–593 data
Template:Mpl 2172-02-08 1.783 1.775 1.792 18.7 385–1242 data
(290772) 2005 VC 2198-05-05 1.951 1.791 2.134 17.6 638–2061 data
(A) This list includes near-Earth approaches of less than 2 lunar distances (LD) of objects with H brighter than 20.
(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
  1. 1.0 1.1 Marchis, F.; et al. "Multiple asteroid systems: Dimensions and thermal properties from Spitzer Space Telescope and ground-based observations". Icarus. 221 (2): 1130–1161. Retrieved 24 August 2018.