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18298 (1979 MZ4)
Classification: Main-belt Asteroid          SPK-ID: 2018298
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2017387875851726 6.5117e-08  
a 2.562483462186075 1.3049e-08 au
q 2.045531155317601 1.7251e-07 au
i 8.645929172677183 5.8205e-06 deg
node 123.2905250062991 2.89e-05 deg
peri 198.3735244408343 3.054e-05 deg
M 61.49034044812896 9.4084e-06 deg
tp 2459140.585772841218
(2020-Oct-18.08577284)
3.8579e-05 TDB
period 1498.269827516704
4.10
1.1445e-05
3.133e-08
d
yr
n .2402771472723837 1.8354e-09 deg/d
Q 3.07943576905455 1.5682e-08 au
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      15112 days (41.37 yr)  
   first obs. used      1979-06-23  
   last obs. used      2020-11-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56646  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:26:14  

Additional Information
 Earth MOID = 1.03388 au 
 Jupiter MOID = 2.24186 au 
 T_jup = 3.390 
[ 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
absolute magnitude H 14.88   n/a E2021B10  

18298 (1979 MZ4)          Discovered 1979-Jun-25 by Helin, E. F., Bus, S. J. at Siding Spring
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1979 MZ4 = 1999 JN88 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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