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C/2007 E2 (Lovejoy)

From Wikipedia, the free encyclopedia
Non-periodic comet
For other comets discovered by Terry Lovejoy, seeComet Lovejoy.

C/2007 E2 (Lovejoy)
Comet C/2007 E2 (Lovejoy) discovery frame
Discovery
Discovered byTerry Lovejoy
Discovery date15 March 2007
Orbital characteristics
Epoch2454230.5
(10 May 2007)
Aphelion1838AU (inbound)
1554 AU (outbound)[1]
Perihelion1.09294 AU
Eccentricity0.999233
Orbital period~28000 yr (inbound)
~22000 yr (outbound)[1]
Inclination95.8835°
Last perihelion27 March 2007
Physical characteristics[2]
Mean radius
0.624 km (0.388 mi)[a]
Comet total
magnitude (M1)		8.5

C/2007 E2 (Lovejoy) is a non-periodiccomet discovered byTerry Lovejoy on 15 March 2007. Itsperihelion was 27 March 2007, while its closest approach to Earth was 25 April 2007 inHercules at a distance of 0.44AU. Maximumapparent magnitude was approximately +8.[3]

The discovery was made using aCanon EOS 350D consumer gradedigital camera, and not aCCD survey camera.[4]

Image gallery

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References

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Notes

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  1. ^Calculated mean radius using the formula:log10(R) =0.9+0.13(H){\displaystyle \log _{10}\,(\,R\,)\ =\;0.9+\;0.13(\,H\,)}[2]
    WhereH{\displaystyle \,H\,} is the comet's absolute total magnitude (M1)

Citations

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  1. ^abHorizons output."Barycentric Osculating Orbital Elements for Comet C/2007 E2 (Lovejoy)". Solution using the Solar SystemBarycenter. Ephemeris Type:Elements and Center:@0 (To be outside planetary region, inbound epoch 1950 and outbound epoch 2050)
  2. ^abJ. A. Fernández; A. Sosa (2012)."Magnitude and size distribution of long-period comets in Earth-crossing or approaching orbits".Monthly Notices of the Royal Astronomical Society.423 (2):1674–1690.arXiv:1204.2285.doi:10.1111/j.1365-2966.2012.20989.x.
  3. ^Yoshida, Seiichi."C/2007 E2 ( Lovejoy )".Aerith.net.
  4. ^Drummond, John."Comet 2007 E2 (Lovejoy) - Photos and Observations". Possum Observatory. Archived fromthe original on 29 March 2007. Retrieved26 March 2007.

External links

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