Lagniappe Observing: Information on the Asteroid (35396) 1997 XF11

The Near Earth Object (35396) 1997 XF11 is notable( or notorious) for the fact it became the center of a media firestorm on 11 March 1998 when an IAU Circular and press information sheet incorrectly stated the possibility of it impacting the Earth in 2028. Within a day new calculations where done showing the probability of Earth impact to be essentially zero. However this was after the news media reported the story and old(or incorrect) news stories have away living for long time(this can be a good thing if research is done right). This is why one should aways look for updates when doing any research. Recently this story has made a comeback in blogosphere. To show that (35396) 1997 XF11 is NOT "Being Hidden From the World" I obtain the publicly available orbit and imaged it from AstroCamp Observatory. Nerpio, Spain (MPC Code I89)...and I fond where it should be. Here is the images, background information, and links on (35396) 1997 XF11.

The Near Earth Objects (35396) 1997 XF11 on 2016-11-01 from AstroCamp Observatory. Nerpio, Spain - (MPC Code I89) using itelescope.net's (T7 TEL 0.43-m f/6.8 reflector + CCD) a stack of 4 - 60 Second Luminance BIN2 Images
(C) Steven M. Tilley

The Near Earth Objects (35396) 1997 XF11 on 2016-11-01 from AstroCamp Observatory. Nerpio, Spain - (MPC Code I89)
using itelescope.net's (T7 TEL 0.43-m f/6.8 reflector + CCD) a stack of 4 - 60 Second Luminance BIN2 Images
(C) Steven M. Tilley

Background

(as of 2016-11-07)

Object: (35396) 1997 XF11
Approximate Diameter: 1.3 km - 2.8 km ( 0.807783 miles to 1.739839 km )(Absolute Magnitude: H=16.9)
Orbit Type: Apollo [NEO] Potentially Hazardous Asteroid
On the Sentry Risk Table: No
On the NEODyS CLOMON2 risk page: No
First(Precovery) Observation was Made: 1990 03 22.44427
First(Precovery) Observed By: Palomar Mountain (MPC Code 675)
Discovery Observation was Made: 1997 12 06.47227
Discovery Observation was Made By: Steward Observatory, Kitt Peak-Spacewatch (MPC Code 691) The Discovery M.P.E.C.: MPEC 1997-Y11 : 1997 XF11
Last Observation(publish): 2016 11 04.83358 (by Purple Mountain Observatory, XuYi Station, China (MPC Code D29))
Data-Arc Span(publish) : 9724 days (26.62 yr)
Number of Optical Observations(published): 1595
Radar observations: 6
Observatories Reporting (Published) Observations(MPC Code):

(006) Fabra Observatory, Barcelona, Spain.
(046) Klet Observatory, Ceske Budejovice, Czech Republic.
(057) Belgrade, Serbia.
(073) Bucharest, Romania.
(084) Pulkovo, Russia
(104) San Marcello Pistoiese, Italy.
(106) Crni Vrh, Slovenia
(118) Astronomical and Geophysical Observatory, Modra, Slovakia.
(127) Bornheim, Germany
(130) Lumezzane, Italy.
(151) Eschenberg Observatory, Winterthur, Switzerland.
(160) Castelmartini,Italy.
(168) Kourovskaya, Russia.
(176) Observatorio Astronomico de Consell, Spain.
(185) Observatoire Astronomique Jurassien-Vicques, Switzerland.
(204) Schiaparelli Observatory,Italy
(213) Observatorio Montcabre, Spain
(251) Arecibo, Puerto Rico,US
(253) Goldstone DSS 14, Fort Irwin, California, US
(291) LPL/Spacewatch II, Arizona,US
(333) Desert Eagle Observatory,Arizona, US
(360) Kuma Kogen, Japan
(379) Hamamatsu-Yuto, Japan
(402) Dynic Astronomical Observatory,Japan
(413) Siding Spring Observatory,NSW, Australia
(422) Loomberah, NSW, Australia
(428) Reedy Creek,QLD,Australia.
(474) Mount John Observatory, Lake Tekapo, New Zealand.
(557) Ondrejov, Czech Republic
(568) Mauna Kea, Hawaii, US
(587) Sormano, Italy
(608) Haleakala-AMOS, Hawaii, US
(644) Palomar Mountain/NEAT, Arizona, US
(658) National Research Council of Canada, Brit, Columbia, Canada
(670) Camarillo,Arizona,US
(675) Palomar Mountain, Arizona,US
(691) Steward Observatory, Kitt Peak-Spacewatch, Arizona, US
(696) Whipple Observatory, Mt. Hopkins, Arizona, US
(699) Lowell Observatory-LONEOS, Arizona,US
(703) Catalina Sky Survey, Arizona,US
(704) Lincoln Laboratory ETS, New Mexico, US
(705) Apache Point,New Mexico, US
(711) McDonald Observatory, Fort Davis,Texas,US.
(807) Cerro Tololo Observatory, La Serena, Chile.
(809) European Southern Observatory, La Silla, Chile.
(897) YGCO Chiyoda Station, Japan.
(900) Moriyama, Japan.
(921) SW Institute for Space Research, Cloudcroft New Mexico,US
(932) John J. McCarthy Obs., New Milford, Connecticut,US
(938) Linhaceira,Portugal.
(940) Waterlooville, UK.
(941) Observatorio Pla D'Arguines, Spain.
(952) Marxuquera, Spain.
(954) Teide Observatory,Canary Islands (Spain).
(A30) Crespadoro,Italy.
(B67) Sternwarte Mirasteilas, Falera, Switzerland.
(C00) Velikie Luki, Russian.
(C20) Kislovodsk Mtn. Astronomical Stn., Pulkovo Obs., Russia.
(C51) WISE.
(D25) Tzec Maun Observatory, Pingell (before 2010),WA, Australia.
(D29) Purple Mountain Observatory, XuYi Station, China.
(E12) Siding Spring Survey, NSW, Australia
(F51) Pan-STARRS 1, Haleakala, Hawaii, US
(G34) Oberfrauendorf, Germany.
(G36) Calar Alto-CASADO, Spain.
(G45) Space Surveillance Telescope, Atom Site, New Mexico, US
(G92) Jarnac Observatory, Vail, Arizona,US
(G96) Mt. Lemmon Survey, Arizona, US
(H21) Astronomical Research Observatory, Westfield, Illinois, US
(H23) Pear Tree Observatory, Valparaiso , Florida, US
(H45) Arkansas Sky Obs., Petit Jean Mountain South, Arkansas, US
(H79) York University Observatory, Toronto, Canada/Ontario.
(I20) Observatorio Astronomico Salvador, Rio Cuarto, Argentina.
(J16) An Carraig Observatory, Loughinisland, UK.
(J19) El Maestrat, Spain.
(J75) OAM Observatory, La Sagra, Spain.
(J93) Mount Tuffley Observatory, Gloucester, UK.
(J94) Abbeydale, UK.
(K38) M57 Observatory, Saltrio, Italy.
(K63) G. Pascoli Observatory, Castelvecchio Pascoli, Italy.
(Q62) iTelescope Observatory, Siding Spring, NSW, Australia.
(T05) ATLAS-HKO, Haleakala, Hawaii, US
(V78) Spirit Marsh Observatory. Sauk Centre, Minnesota, US
(V83) Rolling Hills Observatory, Warrensburg, Missouri, US
(W19) Kalamazoo, Michigan, US
(Y00) SONEAR Observatory, Oliveira (S20.71513 W44.78496) Brazil.

Perihelion Distance: 0.7445669829462876 (AU)

Aphelion Distance: 2.141039135154752 (AU)

Earth MOID: 0.000392071 AU ( 0.153 (LD)) or 36,445.276 miles (58,652.987 (KM))

Last Close-Approach to Earth: Passed the Earth on 2016-June-10 at a Nominal Distance of 0.179984750131334 (AU), (70.045 Lunar Distance (LD)), 16,730,627.744 or miles (26,925,335.376 (KM))

Close-Approach to Venus: Will pass Venus on 2021-September-17 at Nominal Distance of 0.0932504234507136 (AU) (36.29 (LD)) or 8,668,168.39 miles (13,950,064.789 (KM))

Close-Approach to Earth: Will safely pass Earth on 2021-November-18 at Nominal Distance of 0.443542182988942 (AU) (172.614 (LD)) or 41,229,821.677 miles (66,352,966.137 (KM))

Close-Approach to Earth: Will safely pass Earth on 2023-May-05 at Nominal Distance of 0.241774173444771 (AU) (94.092 (LD)) or miles 22,474,313.469 ( 36,168,901.535 (KM))

Close-Approach to Earth: Will safely pass Earth on 2028-October-26 at Nominal Distance of 0.00621153684077898 (AU) (2.417 (LD)) or 577,398.421 miles (929,232.685 (KM))

Close-Approach to The Moon: Will safely pass Moon on 2028-October-26 at Nominal Distance of 0.00886650062640578 (AU)(3.451 (LD)) or 824,192.723 miles (1,326,409.614(KM))
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Nov 8, 2016

Information on the Asteroid (35396) 1997 XF11

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