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45P/Honda-Mrkos-Pajdusakova
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000045
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 2456060.5 (2012-May-13.0) TDB
Reference: JPL K112/2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8246720758970018 1.9243e-06  
a 3.021546191968544 3.7545e-05 AU
q .5297614214191643 8.9182e-07 AU
i 4.252433260900838 1.3449e-05 deg
node 89.00218090291999 0.00015429 deg
peri 326.2580403750489 0.00022254 deg
M 42.638552274391 0.00078718 deg
tp 2455833.282261251390
(2011-Sep-28.78226125)
4.7379e-05 JED
period 1918.413773129635
5.25
0.035756
9.789e-05
d
yr
n .187655033049887 3.4976e-06 deg/d
Q 5.513330962517924 6.8507e-05 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 3.881341125636597E-9 3.574E-10
A2 [EST] 4.33006560214081E-10 9.534E-11
  Orbit Determination Parameters
   # obs. used (total)      912  
   # delay obs. used      1  
   # Doppler obs. used      2  
   data-arc span      2144 days (5.87 yr)  
   first obs. used      2006-05-30  
   last obs. used      2012-04-12  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      3  
   fit RMS      .59465  
   data source      ORB  
   producer      Alan B. Chamberlin  
   solution date      2012-May-02 16:10:04  

Additional Information
 Earth MOID = .060071 AU 
 T_jup = 2.582 
[ 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 14. mag n/a ICQ 2001 Handbook  
comet total magnitude slope K1 26.0   n/a ICQ 2001 Handbook  
comet nuclear magnitude M2 18. mag n/a ICQ 2001 Handbook  
comet nuclear magnitude slope K2 15.0   n/a ICQ 2001 Handbook  
diameter diameter 1.6 km n/a Lamy,P.L.;Toth,I.;Fernandez,Y.R.;Weaver,H.A. (2004) Comets II, pp. 223-264  

45P/Honda-Mrkos-Pajdusakova          Discovered 1948-Dec-03 by Honda, Minora at Kurashiki, Japan
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1990.7       1990 XIV   1990f 
 1985.5       1985 III   1985c 
 1980.2       1980 I   1980c 
 1975.0       1974 XVI   1974f 
 1969.7       1969 V   1969e 
 1964.5       1964 VII   1964d 
 1954.0   45P/1954 C1   1954 III   1954a 
 1948.7   45P/1948 X1   1948 XII   1948n 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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