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TOPIC: Comet C/2007 N3 (Lulin)


L

Posts: 131433
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RE: Comet C/2007 N3 (Lulin)
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Ephemeris
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   mag
2009 03 05    08 51.60   +17 09.1    0.531    1.463   146.2    22.2   6.8
2009 03 10 08 01.81 +19 53.4 0.668 1.506 129.0 30.8 7.4
2009 03 15 07 30.34 +21 08.6 0.825 1.551 116.6 35.0 8.0
2009 03 20 07 10.15 +21 44.9 0.993 1.597 106.9 36.6 8.5
2009 03 25 06 56.90 +22 03.6 1.164 1.645 98.8 36.8 9.0
2009 03 30 06 48.09 +22 13.6 1.337 1.694 91.8 36.1 9.4
2009 04 04 06 42.26 +22 19.2 1.509 1.745 85.5 34.9 9.8
2009 04 09 06 38.48 +22 22.2 1.680 1.796 79.7 33.3 10.2
2009 04 14 06 36.19 +22 23.7 1.847 1.848 74.3 31.5 10.5
2009 04 19 06 35.01 +22 24.3 2.010 1.901 69.1 29.6 10.8
2009 04 24 06 34.67 +22 24.1 2.170 1.954 64.2 27.6 11.1
2009 04 29 06 34.99 +22 23.4 2.324 2.008 59.4 25.6 11.4
Orbital Elements at Epoch 2454589.5 (2008-May-03.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000212252329737 2.2167e-06  
a -5708.205556110919 59.602 AU
q 1.211579927902138 2.8191e-06 AU
i 178.3723312564329 1.6785e-05 deg
node 338.4995762392219 0.00045703 deg
peri 136.8464342432732 0.00048102 deg
M 359.9994226934936 9.0417e-06 deg
tp 2454842.110724368994
(2009-Jan-10.61072437)
0.00010989 JED
period n/a
n/a
n/a
n/a
d
yr
n 2.285360243120728E-6 3.5794e-08 deg/d
Q n/a n/a AU

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Taiwan star gazers were advised Monday that the period between Jan. 10 and late February will be the best time to observe Comet Lulin -- the first comet concertedly discovered by astronomers across the Taiwan Strait in 2007.
Astronomers at the Taipei Astronomical Museum said that the tail of Lulin will become most vivid during that time as it moves closest to the Earth.
According to the museum, it took 28.5 million years for Comet Lulin to revolve round the Sun on its own axis.

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L

Posts: 131433
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Comet Lulin
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Comet Lulin should be visible to the unaided eye from dark locations during the last two weeks of February
The comet will pass only 0.41 astronomical units from Earth on February 24.

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L

Posts: 131433
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Comet C/2007 N3 (Lulin)
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Observation from Kirby Storter Roadside Park in Big Cypress National Preserve, Florida. 1025 UTC - C/2007 N3 (Lulin). Wow! Very bright. Very easy at 90x in the XT8. Nicely formed coma like an unresolved globular, centrally concentrated with an even linear dropoff in brightness from center to halo. About 3' across. No tail seen. Using the defocused-star method, I estimate magnitude at around 8.
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C/2007 N3 (Lulin)
T 2009 Jan. 10.5117 TT MPC
q 1.210015 (2000.0) P Q
Peri. 136.8891 -0.9296507 -0.3682949
Node 338.4930 -0.3452892 +0.8610254
e 1.0 Incl. 178.3728 -0.1285491 +0.3507051
From 154 observations 2007 July 11-Aug. 10.

MPEC 2007 -P32
Ephemeris
Date TT R. A. (2000) Decl. Delta r Elong. Phase mag
2008 12 15    16 06.74   -19 58.1    2.164    1.281    19.8    15.0   9.3
2008 12 20 16 05.22 -19 54.6 2.077 1.258 25.2 19.4 9.1
2008 12 25 16 03.35 -19 50.0 1.979 1.240 30.7 23.9 8.9
2008 12 30 16 01.03 -19 44.0 1.870 1.226 36.4 28.4 8.7
2009 01 04 15 58.11 -19 36.2 1.751 1.217 42.2 32.9 8.6
2009 01 09 15 54.39 -19 25.8 1.622 1.213 48.2 37.2 8.4
2009 01 14 15 49.60 -19 11.7 1.485 1.213 54.4 41.2 8.2
2009 01 19 15 43.30 -18 52.4 1.340 1.219 61.0 44.9 8.0
2009 01 24 15 34.86 -18 24.9 1.190 1.230 68.2 48.0 7.8
2009 01 29 15 23.22 -17 44.3 1.035 1.246 76.1 50.1 7.5
2009 02 03 15 06.61 -16 41.3 0.879 1.266 85.3 50.9 7.2
2009 02 08 14 42.01 -14 57.3 0.727 1.290 96.5 49.4 6.9
2009 02 13 14 04.19 -11 54.8 0.586 1.318 111.3 44.3 6.5
2009 02 18 13 05.32 -06 25.9 0.472 1.350 131.8 33.1 6.2
2009 02 23 11 40.91 +02 15.2 0.414 1.385 159.7 14.4 6.0
2009 02 28 10 06.97 +11 23.6 0.436 1.423 170.3 6.7 6.2


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