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Comet Ryves

C/1931 P1 (Ryves)
Discovery
Discovered byPercy Mayow Ryves
Discovery siteZaragoza, Spain
Discovery date10 August 1931
Designations
1931c[1]
1931 IV
Orbital characteristics[2]
Epoch7 August 1931 (JD 2426560.5)
Observation arc96 days
Number of
observations		25
Aphelion222.25 AU
Perihelion0.0749 AU
Semi-major axis111.16 AU
Eccentricity0.999326
Orbital period1,173 years
Inclination169.29°
102.28°
Argument of
periapsis		168.15°
Last perihelion25 August 1931
TJupiter–0.287
Physical characteristics
4.0
(1931 apparition)

Ryves's Comet, also known as C/1931 P1, 1931 IV or 1931c, was discovered by Percy Mayow Ryves, an English amateur astronomer, on 10 August 1931. The comet passed perihelion on 25 August 1931 at a distance of 0.075 AU (11.2 million km; 7.0 million mi) from the Sun.[3]

  1. ^ Cite error: The named reference ICQ1 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference JPL was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference NYT-19310828 was invoked but never defined (see the help page).
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