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C/2014 E2 (Jacques)

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C/2014 E2 (Jacques)
Image of 2014 E2 (Jacques) in 24 August 2014
Discovery
Discovered byCristóvão Jacques
Eduardo Pimentel
João Ribeiro de Barros
Marcelo Dias
Discovery date13 March 2014
Orbital characteristics[2]
Epoch2014 May 23.0 TT
(JD 2456800.5)
Aphelion~1600 AU (epoch 1950)[1]
Perihelion0.6638 AU (q)
Eccentricity0.99912 (e)
Orbital period~22,000 years inbound (Barycentric solution for epoch 1950)[1]
~12,000 years outbound
(Barycentric solution for epoch 2050)[1]
Avg. orbital speed27 km/s
Max. orbital speed51.7 km/s
Inclination156.4° (i)
Last perihelion2014 July 2

C/2014 E2 (Jacques), provisionally designated as S002692,[3] is a long-period comet discovered by the Brazilian astronomers Cristóvão Jacques Lage de Faria, Eduardo Pimentel, João Ribeiro de Barros and Marcelo Dias on the night of 13 March 2014.[4] It was the second comet discovered by the SONEAR Observatory team after comet C/2014 A4.

Overview

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Observations were made with a 0.45-meter (17.7-inch) f/2.9 wide-field reflector telescope with equatorial assembly and CCD camera at the Southern Observatory for Near Earth Asteroids Research (SONEAR), located near Oliveira, Minas Gerais, Brazil.[5]

In late March 2014, C/2014 E2 (Jacques) appeared to contain a dense, bright coma (11.5-12 magnitude), visible with an 8-inch telescope.[5] It crossed the celestial equator on 8 May 2014 becoming a northern hemisphere object.[6] From 3 June 2014 until 17 July 2014 it had an elongation less than 30 degrees from the Sun.[6] The comet was visible in LASCO C3 on 21 June 2014.[7] C/2014 E2 peaked around apparent magnitude 6 in mid-July and was visible in binoculars above the glow of morning twilight.[8][9]

C/2014 E2 passed 0.085 AU (12,700,000 km; 7,900,000 mi) from Venus on 13 July 2014.[10] On 20 July 2014 the comet was near the naked eye star Beta Tauri.[11] On 22 August 2014 it passed Epsilon Cassiopeiae. It reached perigee (closest approach to Earth) on 28 August 2014, at 0.56 AU (84,000,000 km; 52,000,000 mi).[3] The comet passed about 3 degrees from Deneb from 4–5 September 2014.[12] On 14 September the comet was near Albireo.[13]

By October 2014 the comet had fainted to magnitude 10.[14]

References

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  1. ^ a b c Horizons output. "Barycentric Osculating Orbital Elements for Comet C/2014 E2 (Jacques)". (Solution using the Solar System Barycenter and barycentric coordinates. Select Ephemeris Type:Elements and Center:@0)
  2. ^ "C/2014 E2 (Jacques)". Small-Body Database Lookup. ssd.jpl.nasa.gov. Retrieved 9 June 2024.
  3. ^ a b "C/2014 E2 Jacques" (in Portuguese). Costeira1 e Cometas/REA. Retrieved 2014-03-31.
  4. ^ Villamarin, Jenalyn (2014-03-17). "2014 Comet Jacques: SONEAR Team in Brazil Spots New Comet C/2014 E2, Closest Approach to the Sun to Occur on June 29". International Business Times AU. Archived from the original on 2014-03-28. Retrieved 2014-03-31.
  5. ^ a b King, Bob (2014-03-15). "New Comet Jacques May Pass 8.4 million miles from Venus this July". Universe Today. Retrieved 2014-03-31.
  6. ^ a b "Elements and Ephemeris for C/2014 E2 (Jacques)". The International Astronomical Union Minor Planet Center. Archived from the original on 2014-10-26. Retrieved 2014-06-15.
  7. ^ Rob Kaufman – comets-ml
  8. ^ Yoshida, Seiichi (2014-07-20). "Weekly Information about Bright Comets (2014 July 19: North)". aerith.net. Retrieved 2014-10-21.
  9. ^ Seiichi Yoshida. "C/2014 E2 ( Jacques )". Seiichi Yoshida's Comet Catalog. Retrieved 2014-06-15.
  10. ^ "JPL Close-Approach Data: C/2014 E2 (Jacques)" (last observation: 2014-10-05; arc: 206 days). Retrieved 2014-04-30.
  11. ^ "Catch Comet Jacques near Venus at dawn". AstroBob. 2014-07-15. Retrieved 2014-07-20.
  12. ^ "Jacques S&T final Aug_Sept_edited-3". 18 August 2014.
  13. ^ David Dickinson (2014-09-09). "Tales (Tails?) Of Three Comets". Universe Today. Retrieved 2014-09-12.
  14. ^ Yoshida, Seiichi (2014-10-05). "Weekly Information about Bright Comets (2014 Oct. 4: North)". aerith.net. Retrieved 2014-10-21.
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