Jump to content

332P/Ikeya–Murakami

From Wikipedia, the free encyclopedia
(Redirected from C/2010 V1)
332P/Ikeya–Murakami
332P/Ikeya–Murakami photographed by the Hubble Space Telescope in January 2016.[1]
Discovery
Discovered byKaoru Ikeya and Shigeki Murakami
Discovery dateNovember 3, 2010
Designations
2010 V1; 2015 Y2
Orbital characteristics
Epoch2016 Jan. 13[2]
Observation arc124 days (fragment A)[3]
Perihelion1.573 AU (q)
Eccentricity0.4904
Orbital period5.42 yr[2]
Inclination9.387°
Last perihelion2021-Aug-18 (A)[4]
2016 Mar. 17 (A)[2]
2016 Mar. 17 (B)[5]
2010-Oct-13[2]
2005-May
Next perihelion2027-Jan-19? (A)[6]

332P/Ikeya–Murakami (P/2010 V1) is a short-period comet with period of approximately 5.4 years[2] first identified independently by the two Japanese amateur astronomers Kaoru Ikeya and Shigeki Murakami on November 3, 2010.[7][8] Ikeya identified the comet using a 25-centimeter (10-inch) reflector at 39×, while Murakami used a 46 cm (18-inch) reflector at 78×.[7] Photographic confirmation of the comet was obtained by Ernesto Guido and Giovanni Sostero using a Global-Rent-a-Scope (GRAS) telescope in New Mexico. Both Ikeya and Murakami discovered the comet using manual observation through optical telescopes. Such visual discoveries have become rare in recent years.[7]

At the start of November 2010, a few weeks past perihelion passage, it was discovered the comet had undergone a major outburst between October 31 and November 3.[9] After the 2010 perihelion passage, the comet only had about an 80-day observation arc.[9]

The recovery of P/2010 V1 on December 31, 2015, at magnitude 20 was announced on January 2, 2016, and designated as P/2015 Y2.[2] A secondary fragment (B) was confirmed and announced on January 5, 2016.[5] The comet is now composed of component A and B with two different comas, envelopes and tails.[5] Around January 11, 2016, two fainter potential fragments, designated P/2010 V1-C and P/2010 V1-D have been located, both likely having been fragmented from P/2010 V1-B. As of January 29, fragments B and D had nearly entirely disintegrated, and fragment C had undergone an outburst, making it as bright as P/2010 V1-A.

Even fragment A has not been observed since May 2016 and only has a 124 day observation arc.[3]

Comet fragment semimajor axis (AU) perihelion eccentricity inclination M2 approximate size (m) ascending node argument of peri Discovery date
A 3.08642 1.572883 0.49039 9.3869 19.3 470 3.7827 152.442 2016/01/02
B 3.0834 1.57287 0.48989 9.3824 20.8 240 3.796 152.378 2016/01/01
C 3.0894 1.57293 0.49086 9.3870 12.5 10900 3.7810 152.430 2010/11/03
D 3.083 1.5714 0.4904 9.379 19.5 430 3.76 152.6 2016/02/01
E 3.09 1.573 0.491 9.39 22.5 110 3.8 152.5 2016/01/18
F 3.15 1.585 0.496 9.51 22.1 130 3.60 152.4 2016/02/05
G 3.06 1.551 0.494 9.27 20.6 260 3.6 154.5 2016/02/10
H 3.0860 1.57283 0.49033 9.3857 18.9 570 3.786 152.421 2016/02/05
I 3.083 1.5730 0.490 9.38 21.7 160 3.80 152.4 2016/02/05

References

[edit]
  1. ^ "Cosmic Fragments". www.spacetelescope.org. Retrieved 20 September 2016.
  2. ^ a b c d e f "MPEC 2016-A10 : COMET P/2010 V1 = 2015 Y2 (Ikeya-Murakami)". IAU Minor Planet Center. 2016-01-02. Retrieved 2016-01-12. (PK15Y020)
  3. ^ a b "JPL Small-Body Database Browser: 332P/Ikeya-Murakami-A" (2016-05-05 last obs). Retrieved 2021-09-17.
  4. ^ "332P/Ikeya-Murakami Orbit". Minor Planet Center. Retrieved 2017-04-10.
  5. ^ a b c "COMET P/2015 Y2 (IKEYA-MURAKAMI)". Central Bureau for Astronomical Telegrams. 2016-01-05.
  6. ^ "Horizons Batch for 332P/Ikeya-Murakami-A (90001283) on 2027-Jan-19?" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 2021-09-17. (JPL#15 / Soln.date: 2021-Feb-24 / last obs: 2016-05-05)
  7. ^ a b c Sinnott, Roger (2010-11-04). "New Binocular Comet in the Morning Sky". Sky & Telescope. Archived from the original on 2010-11-10. Retrieved 2010-11-05.
  8. ^ "Ikeya–Murakami: The New Comet on the Cosmic Block". NASA. November 17, 2010. Retrieved 14 December 2010.
  9. ^ a b Ishiguro, Masateru; Jewitt, David; Hanayama, Hidekazu; Usui, Fumihiko; Sekiguchi, Tomohiko; Yanagisawa, Kenshi; Kuroda, Daisuke; Yoshida, Michitoshi; Ohta, Kouji (2014-05-20). "Outbursting Comet P/2010 V1 (Ikeya-Murakami): A Miniature Comet Holmes". The Astrophysical Journal. 787 (1): 55. arXiv:1404.1630. Bibcode:2014ApJ...787...55I. doi:10.1088/0004-637X/787/1/55. ISSN 0004-637X. S2CID 50869105.
[edit]


Numbered comets
Previous
331P/Gibbs
332P/Ikeya–Murakami Next
333P/LINEAR