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JPL Small-Body Database Browser
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96P/Machholz 1
Classification: Jupiter-family Comet* [NEO]          SPK-ID: 1000061
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2454773.5 (2008-Nov-03.0) TDB
Reference: JPL K173/4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9592074929539043 4.3902e-08  
a 3.032767865537531 3.0664e-08 au
q .1237142045241124 1.332e-07 au
i 58.53858212360188 5.7208e-05 deg
node 94.35081409879058 1.4302e-05 deg
peri 14.74631062198304 1.8605e-05 deg
M 107.7407296760326 1.8995e-06 deg
tp 2454196.156084504273
(2007-Apr-05.65608450)
1.3013e-05 TDB
period 1929.110840472592
5.28
2.9257e-05
8.01e-08
d
yr
n .1866144715208834 2.8302e-09 deg/d
Q 5.94182152655095 6.0076e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 6.694351996324047E-11 9.643E-11
A2 [EST] -1.778946542704063E-12 4.681E-14
A3 [EST] -1.774719646393026E-10 1.145E-10
  Orbit Determination Parameters
   # obs. used (total)      964  
   data-arc span      3829 days (10.48 yr)  
   first obs. used      2007-04-09  
   last obs. used      2017-10-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6442  
   source      ORB  
   producer      Javier Roa  
   solution date      2019-Dec-05 16:10:23  

Additional Information
 Earth MOID = .334629 au 
 Jupiter MOID = .612925 au 
 T_jup = 1.941 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 13.4   1. K173/4 2 parameter fit from 135 observations, autocmod 2.8
comet total magnitude slope K1 11.   n/a K173/4 autocmod 2.8
diameter diameter 6.4 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp. 223-264  

96P/Machholz 1          Discovered 1986-May-12 by Machholz, Donald E. at San Jose, California
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 XII   
 1986.1   96P/1986 J2   1986 VIII   1986e 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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