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15P/Finlay
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000027
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


:
Orbital Elements at Epoch 2454841.5 (2009-Jan-10.0) TDB
Reference: JPL K085/10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.7214426166185468058955 3.3241e-07  
a 3.4822702812780490511102 4.8669e-07 AU
q 0.9700120977798104560108 1.1132e-06 AU
i 6.8168286265521169653425 1.7183e-05 deg
node 13.80663692678561 0.00015282 deg
peri 347.4959886440172 0.00013593 deg
M 30.55171262951712 1.4331e-05 deg
tp 2454640.069513713605
(2008-Jun-22.56951371)
7.6083e-05 JED
period 2373.515879206157
6.50
0.00049759
1.362e-06
d
yr
n .1516737272136578 3.1797e-08 deg/d
Q 5.994528464776288 8.3781e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 3.613077174647958E-9 6.388E-11
A2 [EST] 2.459393447219388E-10 1.983E-12
  Orbit Determination Parameters
   # obs. used (total)      313  
   data-arc span      10084 days (27.61 yr)  
   first obs. used      1981-08-10  
   last obs. used      2009-03-20  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      1  
   fit RMS      .89113  
   data source      ORB  
   producer      Nick Mastrodemos  
   solution date      2009-Jun-18 15:07:18  

Additional Information
 Earth MOID = .0130742 AU 
 T_jup = 2.619 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.6 mag 1. K085/10 2 parameter fit from 89 observations, autocmod 2.4a
comet total magnitude slope K1 14.   n/a K085/10 autocmod 2.4a
comet nuclear magnitude M2 15.9 mag 0.8 K085/10 from 143 observations, autocmod 2.4a
comet nuclear magnitude slope K2 5.   n/a K085/10 autocmod 2.4a
comet nuclear phase coefficient PC 0.03   n/a K085/10 autocmod 2.4a

15P/Finlay          Discovered 1886-Sep-26 by Finlay, W. H. at Cape of Good Hope, South Africa
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1989.0       1988 IX   1988f 
 1982.5       1981 XII   1981e 
 1976.0       1974 X   1974d 
 1969.5       1967 IX   1967g 
 1963.0       1960 VIII   1960d 
 1950.0       1953 VII   1953i 
 1924.0       1926 V   1926d 
 1917.5       1919 II   1919d 
 1904.5       1906 V   1906d 
 1891.5   15P/1893 K1   1893 III   1893a 
 1885.0   15P/1886 S1   1886 VII   1886e 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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