#NASA ALIEN NEWS 2014 SERIES#
#NASA ALIEN NEWS 2014 TV#

NASA's impact risk page lists the diameter at 330 metres (1,080 ft) and lists a mass of 4 ×10 10 kg based on an assumed density of 2.6 g/cm 3.

#NASA ALIEN NEWS 2014 TV#

In contrast, the asteroid's name is generally accented on the second syllable (/əˈpɒfɪs/) as the name was pronounced in the TV series.Ĭomparison of possible size of Apophis asteroid to Eiffel Tower and Empire State Buildingīased upon the observed brightness, Apophis's diameter was initially estimated at 450 metres (1,480 ft) a more refined estimate based on spectroscopic observations at NASA's Infrared Telescope Facility in Hawaii by Binzel, Rivkin, Bus, and Tokunaga (2005) is 350 metres (1,150 ft). The mythological creature Apophis is pronounced with the accent on the first syllable (/ˈæpəfɪs/). In the fictional world of the show, the alien's backstory was that he had lived on Earth during ancient times and had posed as a god, thereby giving rise to the myth of the Egyptian god of the same name. He is one of the principal threats to the existence of civilization on Earth through the first few seasons, thus likely why the asteroid was named after him. One of the show's persistent villains is an alien named Apophis.

#NASA ALIEN NEWS 2014 SERIES#

Tholen and Tucker, two of the co-discoverers of the asteroid, are reportedly fans of the television series Stargate SG-1. Apep is held at bay by Set, the Ancient Egyptian god of storms and the desert. He is the Uncreator, an evil serpent that dwells in the eternal darkness of the Duat and tries to swallow Ra during his nightly passage. Apophis is the Greek name of Apep, an enemy of the Ancient Egyptian sun-god Ra. Receiving a permanent number made it eligible for naming by its discoverers, and they chose the name 'Apophis' on July 19, 2005. Once its orbit was sufficiently well calculated, it received the permanent number 99942 (on June 24, 2005). When first discovered, the object received the provisional designation 2004 MN 4, and early news and scientific articles naturally referred to it by that name. Position of 99942 Apophis relative to the Earth and Sun, compared to the positions of other NEOs at the time of their discovery Apophis was removed altogether from the Sentry Risk Table the next day. The uncertainty in the 2029 approach distance has been reduced from hundreds of kilometers to now just a couple of kilometers greatly enhancing predictions of future approaches. The Goldstone radar observed Apophis March 3–11, 2021, helping to refine the orbit again, and on March 25, 2021, the Jet Propulsion Laboratory announced that Apophis has no chance of impacting Earth in the next 100 years. Observations in 2020 by the Subaru telescope confirmed David Vokrouhlický's 2015 Yarkovsky effect predictions. On average, an asteroid the size of Apophis (370 metres) is expected to impact Earth once in about 80,000 years. Entering March 2021, six asteroids each had a more notable cumulative Palermo Technical Impact Hazard Scale than Apophis, and none of those has a Torino level above 0. On April 12, 2068, the nominal trajectory has Apophis 1.87 AU (280 million km) from Earth. Apophis will make two modestly close approaches to Earth in 2036, but even the planet Venus will come closer to Earth in 2036. By (April 15, 2013, observation arc), the probability of an impact on April 13, 2036, had been eliminated altogether. Preliminary observations by Goldstone radar in January 2013 effectively ruled out the possibility of an Earth impact by Apophis in 2036. The diameter of Apophis is estimated to be approximately 370 metres (1,210 ft). During the short time when it had been of greatest concern, Apophis set the record for highest rating ever on the Torino scale, reaching level 4 on December 27, 2004. By 2008, the keyhole had been determined to be less than 1 km wide. This possibility kept it at Level 1 on the Torino impact hazard scale until August 2006, when the probability that Apophis would pass through the keyhole was determined to be very small and Apophis' rating on the Torino scale was lowered to zero. Until 2006, a small probability however remained that during its 2029 close encounter with Earth, Apophis would pass through a gravitational keyhole of no more than about 800 metres ( 1⁄ 2 mi) in diameter, which would have set up a future impact exactly seven years later on April 13, 2036.

Additional observations provided improved predictions that eliminated the possibility of an impact on Earth in 2029.

99942 Apophis ( / ə ˈ p ɒ f ɪ s/) is a near-Earth asteroid and potentially hazardous asteroid with a diameter of 370 metres (1,210 feet) that caused a brief period of concern in December 2004 when initial observations indicated a probability up to 2.7% that it would hit Earth on April 13, 2029.

Nasa alien news 2014