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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 K173/5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9592074836894154 4.3922e-08  
a 3.032767858374081 3.0673e-08 au
q .1237142323289413 1.3326e-07 au
i 58.53858182853028 5.7212e-05 deg
node 94.35081293062883 1.4304e-05 deg
peri 14.7463138854509 1.861e-05 deg
M 107.7407308761973 1.9003e-06 deg
tp 2454196.156080118566
(2007-Apr-05.65608012)
1.3023e-05 TDB
period 1929.110833637702
5.28
2.9266e-05
8.013e-08
d
yr
n .1866144721820633 2.8311e-09 deg/d
Q 5.94182148441922 6.0094e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 7.035676975844572E-11 9.644E-11
A2 [EST] -1.76259481435609E-12 4.681E-14
A3 [EST] -2.102047080596514E-10 1.145E-10
  Orbit Determination Parameters
   # obs. used (total)      963  
   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      .6452  
   source      ORB  
   producer      Javier Roa  
   solution date      2020-Jun-02 14:02:54  

Additional Information
 Earth MOID = .334629 au 
 Jupiter MOID = .612925 au 
 T_jup = 1.941 
[ hide covariance matrix ]
Orbit Covariance (9×9)
  e q tp node peri i A1 A2 A3
e 1.92917955285855E-15 -5.853059140797488E-15 2.300842678736804E-13 -4.402429216501121E-14 -7.147805088029979E-13 2.451702337696431E-13 -5.021487195550073E-20 -5.525704640397687E-22 3.276892922082432E-20
q -5.853059140797488E-15 1.77595269309154E-14 -7.079793114291185E-13 1.324797980742968E-13 2.166324790716768E-12 -7.313886968021454E-13 4.989768387312332E-20 1.672921054610151E-21 -1.35636184314229E-19
tp 2.300842678736804E-13 -7.079793114291185E-13 1.696041944702619E-10 4.467837345579979E-11 -6.925133074201559E-11 -2.766398705426838E-10 5.206775914085842E-16 -7.024681068364783E-20 -1.811229294049554E-16
node -4.402429216501121E-14 1.324797980742968E-13 4.467837345579979E-11 2.045903319081162E-10 -7.998312034345632E-11 -7.251685062653483E-10 4.217703779472589E-18 -1.266020312629676E-19 -7.323155981335459E-16
peri -7.147805088029979E-13 2.166324790716768E-12 -6.925133074201559E-11 -7.998312034345632E-11 3.463214292408082E-10 2.273311817563907E-10 2.004531721888543E-16 2.848910049871185E-19 3.26726351881918E-16
i 2.451702337696431E-13 -7.313886968021454E-13 -2.766398705426838E-10 -7.251685062653483E-10 2.273311817563907E-10 3.273248542513845E-9 -4.355046439313783E-16 4.668568295421157E-19 3.331442465380104E-15
A1 -5.021487195550073E-20 4.989768387312332E-20 5.206775914085842E-16 4.217703779472589E-18 2.004531721888543E-16 -4.355046439313783E-16 9.299850621857051E-21 -3.199702664480484E-25 4.262148793070423E-21
A2 -5.525704640397687E-22 1.672921054610151E-21 -7.024681068364783E-20 -1.266020312629676E-19 2.848910049871185E-19 4.668568295421157E-19 -3.199702664480484E-25 2.191470437069696E-27 -4.050147435416939E-25
A3 3.276892922082432E-20 -1.35636184314229E-19 -1.811229294049554E-16 -7.323155981335459E-16 3.26726351881918E-16 3.331442465380104E-15 4.262148793070423E-21 -4.050147435416939E-25 1.311676496665833E-20

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   2. K173/5 2 parameter fit from 136 observations, autocmod 2.8
comet total magnitude slope K1 11.25   n/a K173/5 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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