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

[ show orbit diagram ]
:
Orbital Elements at Epoch 2456541.5 (2013-Sep-06.0) TDB
Reference: JPL 53 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9592118287498192 4.6985e-08  
a 3.033939724939583 2.4505e-08 AU
q .123748853063562 1.4281e-07 AU
i 58.31221423529453 4.4922e-05 deg
node 94.32323631127545 1.1819e-05 deg
peri 14.75774840136655 2.0956e-05 deg
M 77.99276065152682 2.7032e-06 deg
tp 2456123.322519416551
(2012-Jul-14.82251942)
1.1525e-05 JED
period 1930.229059113251
5.28
2.3385e-05
6.402e-08
d
yr
n .1865063621855244 2.2596e-09 deg/d
Q 5.944130596815604 4.801e-08 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.069808969190584E-10 1.742E-11
A2 [EST] -9.383180682535005E-13 6.311E-15
  Orbit Determination Parameters
   # obs. used (total)      1090  
   data-arc span      9642 days (26.40 yr)  
   first obs. used      1986-05-13  
   last obs. used      2012-10-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .74534  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2013-Aug-27 09:43:17  

Additional Information
 Earth MOID = .333731 AU 
 T_jup = 1.942 
[ 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 13.3 mag 1. 53 2 parameter fit from 163 observations, autocmod 2.5c
comet total magnitude slope K1 11.   n/a 53 autocmod 2.5c
comet nuclear magnitude M2 16.5 mag 1. 53 from 737 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 53 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 53 autocmod 2.5c
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 | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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