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Home -> Astronomy News -> Solar System -> Comet P/2009 F7 (LINEAR)
Post Info TOPIC: Comet P/2009 F7 (LINEAR)
Blobrana


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Posts: 131433
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Comet 218P/LINEAR
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Comet 218P/LINEAR is at Opposition (0.717 AU) in the constellation Aquarius on the 10th August 2015

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   Mag
2015 08 09    21 10 53.7 -11 49 14   0.7093  1.7221   175.7     2.5  17.6
2015 08 10    21 09 57.5 -11 57 44   0.7171  1.7298   175.8     2.5  17.7
2015 08 11    21 09 02.6 -12 06 06   0.7251  1.7374   175.5     2.6  17.7
2015 08 12    21 08 09.0 -12 14 20   0.7333  1.7451   175.0     2.9  17.7
2015 08 13    21 07 16.9 -12 22 26   0.7416  1.7528   174.2     3.3  17.8
2015 08 14    21 06 26.3 -12 30 23   0.7502  1.7605   173.4     3.8  17.8
2015 08 15    21 05 37.2 -12 38 12   0.7590  1.7682   172.4     4.3  17.9
2015 08 16    21 04 49.8 -12 45 50   0.7680  1.7759   171.4     4.9  17.9
2015 08 17    21 04 04.1 -12 53 19   0.7772  1.7836   170.3     5.5  18.0
2015 08 18    21 03 20.2 -13 00 38   0.7867  1.7913   169.3     6.0  18.0
2015 08 19    21 02 38.1 -13 07 47   0.7963  1.7990   168.2     6.6  18.1
2015 08 20    21 01 57.8 -13 14 44   0.8061  1.8068   167.1     7.2  18.1
2015 08 21    21 01 19.4 -13 21 31   0.8161  1.8145   166.0     7.7  18.1
2015 08 22    21 00 42.9 -13 28 07   0.8263  1.8222   164.9     8.3  18.2
2015 08 23    21 00 08.4 -13 34 32   0.8368  1.8300   163.8     8.8  18.2
2015 08 24    20 59 35.8 -13 40 46   0.8474  1.8377   162.8     9.4  18.3
2015 08 25    20 59 05.2 -13 46 48   0.8582  1.8455   161.7     9.9  18.3
2015 08 26    20 58 36.6 -13 52 38   0.8692  1.8532   160.6    10.4  18.4
2015 08 27    20 58 10.1 -13 58 18   0.8804  1.8610   159.5    10.9  18.4
2015 08 28    20 57 45.5 -14 03 45   0.8918  1.8687   158.5    11.4  18.5
2015 08 29    20 57 22.9 -14 09 01   0.9034  1.8765   157.4    11.9  18.5
2015 08 30    20 57 02.3 -14 14 06   0.9151  1.8842   156.4    12.4  18.6
2015 08 31    20 56 43.6 -14 18 59   0.9271  1.8920   155.3    12.9  18.6
2015 09 01    20 56 27.0 -14 23 41   0.9392  1.8997   154.3    13.3  18.7


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Comet 218P/LINEAR is at Perihelion (1.171 AU) in the constellation Sagittarius on the 23rd April 2015



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Blobrana


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Comet 218P/LINEAR makes its closest approach to the Earth (0.468 AU) in the constellation Sagittarius on the 20th April 2015

Ephemeris

Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   Mag
2015 04 19    19 20 24.7 -16 28 00   0.4681  1.1726    99.0    57.8  15.0
2015 04 20    19 24 48.4 -16 15 05   0.4680  1.1722    98.9    57.8  15.0
2015 04 21    19 29 08.3 -16 01 58   0.4680  1.1718    98.8    57.9  15.0
2015 04 22    19 33 24.3 -15 48 40   0.4681  1.1716    98.8    58.0  15.0
2015 04 23    19 37 36.2 -15 35 12   0.4683  1.1715    98.7    58.0  15.0
2015 04 24    19 41 44.2 -15 21 36   0.4686  1.1715    98.6    58.1  15.0
2015 04 25    19 45 48.1 -15 07 53   0.4690  1.1717    98.6    58.1  15.0
2015 04 26    19 49 47.9 -14 54 04   0.4694  1.1720    98.6    58.1  15.0
2015 04 27    19 53 43.5 -14 40 11   0.4699  1.1725    98.6    58.1  15.1
2015 04 28    19 57 35.0 -14 26 15   0.4705  1.1730    98.6    58.0  15.1
2015 04 29    20 01 22.3 -14 12 17   0.4712  1.1738    98.6    58.0  15.1
2015 04 30    20 05 05.4 -13 58 19   0.4718  1.1746    98.6    58.0  15.1


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Blobrana


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Posts: 131433
Date:
Comet P/2003 H4 (LINEAR = 2009 F7)
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Orbital Elements at Epoch 2453062.5 (2004-Feb-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
Element Value Uncertainty (1-sigma) Units
e .4901087880238302 5.8019e-07
a 3.340034369844436 3.0532e-07 AU
q 1.703054172882042 2.0755e-06 AU
i 18.14753359024462 3.9361e-05 deg
node 226.7863885504796 3.5149e-05 deg
peri 10.46079869911406 0.00052805 deg
M 46.61012940023711 0.00016677 deg
tp 2452773.829344431060
(2003-May-14.32934444)		 0.00099777 JED
period 2229.589090226592
6.10		 0.00030572
8.37e-07		 d
yr
n .1614647297917184 2.214e-08 deg/d
Q 4.97701456680683 4.5496e-07 AU
 Orbit Determination Parameters
# obs. used (total) 261
data-arc span 2190 days (6.00 yr)
first obs. used 2003-04-29
last obs. used 2009-04-27
planetary ephem. DE405
SB-pert. ephem. SB405-CPV-2
quality code 1
fit RMS .6711
data source ORB
producer Otto Matic
solution date 2009-Apr-28 08:50:22

Additional Information
Earth MOID = .69514 AU
T_jup = 2.885
Source

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Blobrana


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Posts: 131433
Date:
Comet P/2003 H4 (LINEAR)
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Comet P/2003 H4 (LINEAR) = P/2009 F7 (LINEAR)

IAUC 9038  (Subscription)

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Blobrana


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Posts: 131433
Date:
Comet P/2009 F7 (LINEAR)
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Comet P/2009 F7 (LINEAR) was discovered by the LINEAR monitoring telescope in March, 2009.
The orbital elements of the comet indicate a perihelion passage on the  22nd June, 2009, at a distance of 1.7 AU from the Sun, and a 6.1 year orbital period.

Ephemeris

Comet  P/2009 F7 (LINEAR) = P/2003 H4 (LINEAR) ?

Comet P/2003 H4 (LINEAR) was discovered by the LINEAR monitoring telescope on April 29, 2003.
Preliminary observations suggested that has a  6.1 year orbital period.
On March 31, 2009, LINEAR announced the recovery of the comet.

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