Astronomy:FarFarOut

From HandWiki
Not to be confused with Farout.
Short description: Trans-Neptunian object
Discovery[2]
Discovered by
Discovery siteSubaru
Discovery dateImaged: January 2018
Found: February 2019[1]
Designations
"FarFarOut"[3]
Minor planet categoryTNO[3]
Orbital characteristics
Observation arc2 days[1]
Physical characteristics
Mean diameter~400 km (250 mi)[4]


FarFarOut is the nickname of a trans-Neptunian object discovered well beyond 100 astronomical unit|AU (15 billion km) from the Sun.[3] Imaged in January 2018 during a search for the hypothetical Planet Nine,[1] the object was announced in a press release on February 21, 2019, by astronomers Scott Sheppard, David Tholen, and Chad Trujillo, when they nicknamed it "FarFarOut" to emphasize its distance from the Sun.[3]

Distance

The object was initially estimated to be roughly 140 AU (21 billion km) from the Sun. But with a very short observation arc the uncertainties in this estimated distance have not been published. (As of February 2019), it is the furthest observed member of the Solar System.[5]

Many near-parabolic comets are much further from the Sun. Caesar's Comet (C/-43 K1) is calculated to be more than 800 AU (120 billion km) from the Sun.[6] Comet Donati (C/1858 L1) is 145 AU (22 billion km) from the Sun.[7]

See also

References

  1. ↑ 1.0 1.1 1.2 Redd, Noah Taylor (March 7, 2019). "New 'FarFarOut' World Is the Most Distant Solar System Object Known". Scientific American. https://www.scientificamerican.com/article/new-farfarout-world-is-the-most-distant-solar-system-object-known. Retrieved March 7, 2019. 
  2. ↑ Voosen, Paul (February 21, 2019). "Astronomers Discover Solar System's Most Distant Object, Nicknamed 'FarFarOut'". Science. doi:10.1126/science.aax1154. https://www.sciencemag.org/news/2019/02/astronomers-discover-solar-system-s-most-distant-object-nicknamed-farfarout. 
  3. ↑ 3.0 3.1 3.2 3.3 Davis, Nicola (February 25, 2019). "'FarFarOut': Astronomer Finds Potential Furthest Object in Solar System". The Guardian. https://www.theguardian.com/science/2019/feb/25/farfarout-nasa-astronomer-finds-potential-furthest-object-in-solar-system. 
  4. ↑ Torbet, Georgina (March 2, 2019). "Dwarf Planet FarFarOut Is the Most Distant Object Discovered in Our Solar System". Digital Trends. https://www.digitaltrends.com/cool-tech/farfarout-distant-object-solar-system. Retrieved March 2, 2019. 
  5. ↑ Strickland, Ashley (February 28, 2019). "FarFarOut displaces FarOut as the most distant object in our solar system". CNN. https://www.cnn.com/2019/02/28/world/farfarout-most-distant-solar-system-object-scn-trnd/index.html. 
  6. ↑ "Horizon Online Ephemeris System for -43K1". Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=-43K1. Retrieved November 16, 2015. 
  7. ↑ "JPL Horizons On-Line Ephemeris for Comet C/1858 L1 (Donati)". JPL Horizons On-Line Ephemeris System. http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=C/1858+L1. Retrieved February 23, 2019. 
    Observer Location: @sun

External links




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