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C/2024 L5 (ATLAS)

For other comets discovered by the Asteroid Terrestrial-impact Last Alert System, see Comet ATLAS.
C/2024 L5 (ATLAS)
Discovery
Discovered byL. Denneau
R. Siverd
J. Tonry
H. Weiland
Discovery siteATLAS South Africa
Discovery date14 June 2024
Designations
A117uUD[1]
Orbital characteristics[2][3]
Epoch22 July 2024 (JD 2460513.5)
Observation arc103 days
Number of
observations		247
Orbit typeHyperbolic
Perihelion3.4320 AU
Eccentricity1.03743
Inclination166.573°
139.166°
Argument of
periapsis		290.521°
Next perihelion10 March 2025
Earth MOID2.46255 AU
Jupiter MOID0.00497 AU
Comet total
magnitude (M1)		6.7

C/2024 L5 (ATLAS) is a comet that was discovered on 14 June 2024 as A117uUD by the Asteroid Terrestrial-impact Last Alert System (ATLAS), South Africa, Sutherland. It will reach perihelion on 10 March 2025 at 3.432 AU (513.4 million km) from the Sun.[4][5]

It is the second known Solar System comet to become interstellar after experiencing a planetary encounter.[5][1] C/1980 E1 (Bowell) reached a hyperbolic trajectory after an encounter with Jupiter on 9 December 1980.[6][7] C/2024 L5 experienced a very close encounter at 0.0048 AU with Saturn on 24 January 2022.[2][5][1] C/2024 L5 could be a former retrograde, inactive centaur.[8] The receding velocity of C/2024 L5 when entering interstellar space will be 2.8 km/s, moving towards the constellation of Triangulum.[8]

  1. ^ a b c Cite error: The named reference de_la_Fuente_Marcos-2024 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference jpldata was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference horizons was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference MPEC2024-O15 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference CBET005418 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Buffoni1982 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Branham2013 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference twointerstellarcomets was invoked but never defined (see the help page).

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