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255P/Levy

255P/Levy
Discovery
Discovered byDavid H. Levy
Discovery date2006-Oct-02[1]
Orbital characteristics
Epoch2014-Nov-20[1]
(JD 2456981.5)
Aphelion5.069 AU (Q)
Perihelion1.008 AU (q)
Semi-major axis3.038 AU (a)
Eccentricity0.6682
Orbital period5.30 a
Inclination18.27°
Last perihelion2022-Sep-07[2]
2017-May-03[3][4]
2012-Jan-14[3]
2006-Oct-07[5]
Next perihelion2027-Sep-25[6]
Earth MOID0.025 AU (3,700,000 km)[1]

255P/Levy, formerly P/2006 T1 and P/2011 Y1, is a periodic comet with an orbital period of 5.25 years.[1] It last came to perihelion (closest approach to the Sun) on 14 January 2012.[5] During the 2006 passage the comet achieved an apparent magnitude of ~9.5.[7] Levy (PK06T010) was believed to have been recovered on 3 June 2011 at magnitude 19.8,[8] but other observatories were unable to confirm a recovery. It was most likely a false positive because of large residuals. Levy was recovered on 17 December 2011 at magnitude 19.8, and given the second designation 2011 Y1.[9] It was then numbered.

It came to perihelion on 14 January 2012 at a distance of 1.007 AU from the Sun.[5] The comet passed the Earth on 2012-Jan-26 at a distance of 0.2359 AU (35,290,000 km; 21,930,000 mi).[10] During the 2012 passage the comet was originally expected to reach an apparent magnitude of 7, but the comet had been in outburst in 2006 and was much dimmer than expected when it was recovered in 2011. MPC estimates after the 2011 recovery estimated that it would reach a magnitude of 17, and it had an elongation of 90°. However, CCD images showed it was diffuse[11] and the comet's magnitude was estimated at 14.1 on 30 December 2011.[12] The comet was not observed during the 2017 or 2022 perihelion passage.[3] At opposition in August 2016 it would have been dimmer than magnitude 19.

255P/Levy currently has an Earth-MOID of 0.025 AU (3,700,000 km; 2,300,000 mi).[1]

The comet has been associated with α Cepheids meteor shower, which peaks on 2 January.[13]

  1. ^ a b c d e Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Horizons2022 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference MPC was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference NK2187 was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference mpcdata was invoked but never defined (see the help page).
  6. ^ "Horizons Batch for 255P/Levy on 2027-Sep-25" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 2023-04-30. (JPL#40/Soln.date: 2021-Oct-18)
  7. ^ Cite error: The named reference apmag2006 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference MPEC2011-L51 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference MPEC2011-Y07 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference jpl-close was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference weeklyinfo was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference novichonok-obs was invoked but never defined (see the help page).
  13. ^ Šegon, Damir; Gural, Peter; Andreić, Željko; Skokić, Ivica; Korlević, Korado; Vida, Denis; Novoselnik, Filip (1 April 2014). "New showers from parent body search across several video meteor databases". WGN, Journal of the International Meteor Organization. 42 (2): 57–64. Bibcode:2014JIMO...42...57S. ISSN 1016-3115.
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