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C/1999 F1 (Catalina)
Oort cloud comet
Oort cloud comet
| Field | Value |
|---|---|
| name | C/1999 F1 (Catalina) |
| discoverer | Catalina Sky Survey 1.5-m reflector (703) |
| discovery_date | March 23, 1999 |
| observation_arc | 6.46 years |
| obs | 166 |
| orbit | Oort cloud |
| epoch | May 14, 2001 |
| (JD 2452043.5) | |
| perihelion | 5.787 AU (q) |
| (outside of Jupiter's orbit) | |
| aphelion | ~54,000 AU (inbound) |
| ~66,000 AU (outbound) | |
| eccentricity | 0.99914 |
| period | ~4 million yr (inbound) |
| ~6 million yr (outbound) | |
| inclination | 92.035° |
| Jupiter_moid | 2.91 AU |
| last_p | February 13, 2002 |
(JD 2452043.5) (outside of Jupiter's orbit) ~66,000 AU (outbound) ~6 million yr (outbound)
C/1999 F1 (Catalina) is one of the longest known long-period comets. It was discovered on March 23, 1999, by the Catalina Sky Survey. The current perihelion point is outside of the inner Solar System which helps reduce planetary perturbations to this outer Oort cloud object and keep the inbound and outbound orbital periods similar.
The comet has an observation arc of 6 years
The generic JPL Small-Body Database browser uses a near-perihelion epoch of 2001-May-25 which is before the comet left the planetary region and makes the highly eccentric aphelion point inaccurate since it does not account for any planetary perturbations after that epoch. The heliocentric JPL Small-Body Database solution also does not account for the combined mass of the Sun+Jupiter.
There was potential for a close approach to Saturn when C/1999 F1 crossed the ecliptic plane in 1999, but Saturn was on the other side of its orbit.
| Planet | MOID | ||
|---|---|---|---|
| (AU) | Actual | ||
| Approach | |||
| Distance | |||
| (AU) | Date of | ||
| Closest | |||
| Approach | |||
| Jupiter | 2.914 | 7.68 | 2002-04-24 |
| Saturn | 0.159 | 10.1 | 2003-03-01 |
| Uranus | 2.944 | 7.70 | 2011-10-19 |
| Neptune | 10.11 | 22.1 | 2017-08-31 |
References
References
- (21 March 2015). "Near-parabolic comets observed in 2006–2010 – II. Their past and future motion under the influence of the Galaxy field and known nearby stars". Monthly Notices of the Royal Astronomical Society.
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