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Post Info TOPIC: Comet C/2014 Q2 (Lovejoy)


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RE: Comet C/2014 Q2 (Lovejoy)
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NASA Study Using Keck Telescope Hints at Possible Change in Water 'Fingerprint' of Comet

Astronomers from NASA's Goddard Space Flight Center in Greenbelt, Maryland, observed the Oort cloud comet C/2014 Q2, also called Lovejoy, when it passed near Earth in early 2015. Through NASA's partnership in the W. M. Keck Observatory on Mauna Kea, Hawaii, the team observed the comet at infrared wavelengths a few days after Lovejoy passed its perihelion - or closest point to the sun.
Scientists from NASA's Goddard Center for Astrobiology observed the comet C/2014 Q2 - also called Lovejoy - and made simultaneous measurements of the output of H2O and HDO, a variant form of water. This image of Lovejoy was taken on Feb. 4, 2015 - the same day the team made their observations and just a few days after the comet passed its perihelion, or closest point to the sun.

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Comet C/2014 Q2 (Lovejoy) is at Perihelion (1.290 AU) on the 30th January 2015.

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   Mag
2015 01 29    02 27 55.7 +36 16 21   0.7155  1.2909    97.5    49.1   8.9
2015 01 30    02 24 38.1 +37 17 53   0.7338  1.2908    96.3    49.3   8.9
2015 01 31    02 21 28.9 +38 16 20   0.7524  1.2908    95.0    49.5   9.0
2015 02 01    02 18 27.7 +39 11 53   0.7711  1.2911    93.8    49.6   9.0
2015 02 02    02 15 34.3 +40 04 45   0.7900  1.2915    92.7    49.7   9.1
2015 02 03    02 12 48.4 +40 55 08   0.8091  1.2921    91.6    49.7   9.2
2015 02 04    02 10 09.6 +41 43 13   0.8283  1.2929    90.5    49.7   9.2
2015 02 05    02 07 37.7 +42 29 09   0.8476  1.2939    89.4    49.6   9.3
2015 02 06    02 05 12.5 +43 13 05   0.8670  1.2950    88.4    49.6   9.3
2015 02 07    02 02 53.6 +43 55 11   0.8865  1.2963    87.4    49.5   9.4
2015 02 08    02 00 40.9 +44 35 35   0.9059  1.2978    86.5    49.3   9.4
2015 02 09    01 58 34.1 +45 14 23   0.9255  1.2994    85.6    49.2   9.5
2015 02 10    01 56 33.0 +45 51 44   0.9450  1.3013    84.7    49.0   9.5
2015 02 11    01 54 37.3 +46 27 42   0.9645  1.3033    83.8    48.8   9.6
2015 02 12    01 52 46.9 +47 02 26   0.9841  1.3054    82.9    48.6   9.6
2015 02 13    01 51 01.6 +47 35 58   1.0036  1.3078    82.1    48.4   9.7
2015 02 14    01 49 21.1 +48 08 26   1.0230  1.3103    81.3    48.2   9.7
2015 02 15    01 47 45.3 +48 39 54   1.0424  1.3130    80.5    47.9   9.8
2015 02 16    01 46 14.0 +49 10 26   1.0618  1.3158    79.8    47.6   9.8
2015 02 17    01 44 47.0 +49 40 06   1.0811  1.3188    79.1    47.4   9.9
2015 02 18    01 43 24.1 +50 08 58   1.1003  1.3220    78.3    47.1   9.9
2015 02 19    01 42 05.3 +50 37 06   1.1194  1.3253    77.6    46.8  10.0
2015 02 20    01 40 50.3 +51 04 33   1.1384  1.3288    77.0    46.5  10.0
2015 02 21    01 39 39.0 +51 31 22   1.1573  1.3324    76.3    46.1  10.1
2015 02 22    01 38 31.3 +51 57 36   1.1762  1.3362    75.7    45.8  10.1
2015 02 23    01 37 26.9 +52 23 18   1.1949  1.3402    75.0    45.5  10.2
2015 02 24    01 36 25.8 +52 48 29   1.2135  1.3443    74.4    45.2  10.2
2015 02 25    01 35 27.9 +53 13 13   1.2319  1.3485    73.8    44.8  10.3
2015 02 26    01 34 33.0 +53 37 31   1.2502  1.3530    73.3    44.5  10.3
2015 02 27    01 33 41.0 +54 01 25   1.2684  1.3575    72.7    44.1  10.3
2015 02 28    01 32 51.8 +54 24 57   1.2865  1.3622    72.2    43.8  10.4


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C/2014 Q2 (Lovejoy) is a long-period comet discovered on 17 August 2014 by Terry Lovejoy using a 0.2-meter (8 in) Schmidt-Cassegrain telescope.
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Orbital elements:
    C/2014 Q2 (Lovejoy)
T 2015 Feb. 14.86486 TT                                 MPC
q   1.7767515            (2000.0)            P               Q
                   Peri.  356.34692     -0.24290752     -0.19042558
                   Node   104.74674     +0.91307187     -0.37598674
e   1.0            Incl.   79.60067     +0.32756022     +0.90684732
From 23 observations 2014 Aug. 17-19.

MPEC 2014 - Q10



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