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52P/Harrington-Abell
Classification: Jupiter-family Comet          SPK-ID: 1000039
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 2456799.5 (2014-May-22.0) TDB
Reference: JPL K145/6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5405274276229892 1.3779e-07  
a 3.859004049492325 6.0827e-07 AU
q 1.77310651743354 5.6188e-07 AU
i 10.23134035000531 8.7021e-06 deg
node 336.8515028576929 7.383e-05 deg
peri 139.6064364004181 0.00011331 deg
M 9.81293068798503 2.3755e-05 deg
tp 2456724.024237563613
(2014-Mar-07.52423756)
0.00016999 JED
period 2768.92554742773
7.58
0.00065467
1.792e-06
d
yr
n .1300143300474193 3.074e-08 deg/d
Q 5.94490158155111 9.3705e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.288562019398963E-9 1.231E-10
A2 [EST] 5.341613774476768E-11 8.695E-13
  Orbit Determination Parameters
   # obs. used (total)      1257  
   data-arc span      11191 days (30.64 yr)  
   first obs. used      1983-09-17  
   last obs. used      2014-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .67557  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2014-May-12 11:22:04  

Additional Information
 Earth MOID = .802921 AU 
 T_jup = 2.774 
[ 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 10.1 mag 2. K145/6 2 parameter fit from 248 observations, autocmod 2.5c
comet total magnitude slope K1 16.   n/a K145/6 autocmod 2.5c
comet nuclear magnitude M2 15.5 mag 0.7 K145/6 from 689 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a K145/6 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a K145/6 autocmod 2.5c
diameter diameter 2.6 km n/a Lamy,P.L.;Toth,I.;Fernandez,Y.R.;Weaver,H.A.; (2004) Comets II, pp. 223-264  

52P/Harrington-Abell          Discovered 1955-Mar-22 by Harrington, R.G. and Abell, GeorgeO. at Palomar Mountain Observatory, California (675)
discovered on plate/photo taken on discovery date
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1991.4       1991 X   1990m 
 1983.9       1983 XVII   1983r 
 1976.3       1976 VIII   1975l 
 1968.7       1969 III   1968i 
 1961.1   52P/1962 B1   1962 II   1962a 
 1953.5   52P/1955 F1   1954 XIII   1955a 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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