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141P/Machholz 2-D
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000279
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


:
Orbital Elements at Epoch 2451425.5 (1999-Sep-04.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7510941447488013 1.6256e-07  
a 3.009008906875979 2.7538e-06 au
q .7489599354244401 8.4586e-07 au
i 12.81198253165266 7.9562e-05 deg
node 246.14177171 0.00054466 deg
peri 149.2924228695888 0.00055124 deg
M 341.692431015803 0.00010147 deg
tp 2451522.453125768286
(1999-Dec-09.95312577)
0.00061753 TDB
period 1906.486071783274
5.22
0.0026172
7.166e-06
d
yr
n .1888290742471913 2.5922e-07 deg/d
Q 5.269057878327518 4.8222e-06 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 3.775468059063227E-9 3.737E-10
A2 [EST] -6.327883472415679E-10 1.437E-12
A3 [EST] -1.139938967623395E-8 9.717E-10
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      9607 days (26.30 yr)  
   first obs. used      1994-08-30  
   last obs. used      2020-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      1.0095  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2021-Jan-19 14:46:58  

Additional Information
 Earth MOID = .108077 au 
 Jupiter MOID = .635441 au 
 T_jup = 2.708 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.5   n/a IAUC 7299  
comet total magnitude slope K1 30   n/a IAUC 7299  

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1994.7   141P-D/1994 P1-D       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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