169P/NEAT explained

169P/NEAT
Discoverer:NEAT
Discovery Date:March 15, 2002
Epoch:2022-08-09 (2459800.5)
Semimajor:2.6021 AU
Perihelion:0.60282 AU
Aphelion:4.6014 AU
Eccentricity:0.76833
Period:4.1975 yr
Inclination:11.2985°
Last P:2018 April 29
2014 February 15
2009 November 30
Next P:2022-Jul-09

169/NEAT is a periodic comet in the Solar System. It is the parent body of the alpha Capricornids meteor shower in Late July. 169/NEAT may be related to comet P/2003 T12 (SOHO).[1] [2] 169P is a low activity comet roughly a few kilometers in diameter. It could have originated from the main asteroid belt.[2]

It last came to perihelion (closest approach to the Sun) on 9 July 2022. On 13 July 2022 passed 0.1395abbr=unitNaNabbr=unit from Venus. On 11 August 2026 it will pass 0.1672AU from Earth and then come to perihelion on 21 September 2026.

169P has a similar stable orbit with the smaller body P/2003 T12 (SOHO), both avoiding close encounters with Jupiter. It is possible that both comets likely fragmented from a parent body a bit over 2000 years ago.[2] A further fragmentation even about 4,500 to 5,000 years ago could have produced the meteors of the alpha Capricornids meteor shower. The total estimated mass of the meteors is similar to that of the surviving comet.[3]

External links

Notes and References

  1. https://archive.today/20140531163229/https://groups.yahoo.com/neo/groups/mpml/conversations/topics/29117 169P NEAT and P/2003 T12 - 300 years ago
  2. Alvarez . Santiago Roland . Oyarzabal . Andrea Sosa . Comet P/2003 T12 (SOHO): A possible fragment of comet 169P/NEAT? . Planetary and Space Science . July 2024 . 246 . 105902 . 10.1016/j.pss.2024.105902.
  3. Jenniskens . P. . Vaubaillon . J. . MINOR PLANET 2002 EX 12 (=169P/NEAT) AND THE ALPHA CAPRICORNID SHOWER . The Astronomical Journal . 1 May 2010 . 139 . 5 . 1822–1830 . 10.1088/0004-6256/139/5/1822.