Back C/1969 Y1 (Bennett) German Cometa Bennett Spanish C/1969 Y1 (Bennett) French שביט בנט HE Bennett-üstökös Hungarian C/1969 Y1 Bennett Italian ベネット彗星 (C/1969 Y1) Japanese 베넷 혜성 Korean Ц/1969 Ј1 - Комета Бенет Macedonian Kometen Bennett NN

Comet Bennett

This article is about the "Great Comet of 1970". For the 1974 comet of the same name, see C/1974 V2 (Bennett).
C/1969 Y1 (Bennett)
(Great Comet of 1970)
Comet Bennett photographed by S. M. Larson and R. B. Minton on 30 March 1970
Discovery[1]
Discovered byJohn Caister Bennett
Discovery sitePretoria, South Africa
Discovery date28 December 1969
Designations
1969i[2]
1970 II
Orbital characteristics[3]
Epoch12 April 1970 (JD 2440688.5)
Observation arc301 days
Number of
observations		529
Aphelion289.54 AU
Perihelion0.538 AU
Semi-major axis145 AU
Eccentricity0.99629
Orbital period1,747 a
Inclination90.04°
224.7°
Argument of
periapsis		354.1°
Last perihelion20 March 1970
Next perihelion~3600
TJupiter0.035
Earth MOID0.4690 AU
Jupiter MOID2.6681 AU
Physical characteristics
Comet total
magnitude (M1)		4.6
0.0
(1970 apparition)

Comet Bennett, formally known as C/1969 Y1 (old style 1970 II and 1969i), was one of the two bright comets observed in the 1970s, along with Comet West and is considered a great comet.[4] The name is also borne by an altogether different comet, C/1974 V2. Discovered by John Caister Bennett on December 28, 1969, while still almost two AUs from the Sun, it reached perihelion on March 20, passing closest to Earth on 26 March 1970, as it receded, peaking at magnitude 0.[5] It was last observed on 27 February 1971.[5]

  1. ^ Cite error: The named reference IAUC_2196 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference ICQ1 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference jpl1 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference jpl2 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference cometography was invoked but never defined (see the help page).
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