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118163 (1979 MJ8)
Classification: Main-belt Asteroid          SPK-ID: 2118163
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2802049145346613 4.0737e-08  
a 2.612464697423498 1.7647e-08 au
q 1.880439250157127 1.1164e-07 au
i 4.070734908522385 4.1393e-06 deg
node 231.4742906593824 6.1923e-05 deg
peri 159.63384441981 6.2597e-05 deg
M 228.3455851312252 1.4455e-05 deg
tp 2459764.536227302956
(2022-Jul-04.03622730)
6.6991e-05 TDB
period 1542.318516484658
4.22
1.5627e-05
4.278e-08
d
yr
n .2334148207080681 2.365e-09 deg/d
Q 3.344490144689868 2.2592e-08 au
  Orbit Determination Parameters
   # obs. used (total)      683  
   data-arc span      14975 days (41.00 yr)  
   first obs. used      1979-06-24  
   last obs. used      2020-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55192  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:13:35  

Additional Information
 Earth MOID = .885784 au 
 Jupiter MOID = 2.10738 au 
 T_jup = 3.349 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.80   n/a E2021B55  
diameter diameter 3.545 km 0.075 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.089   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118163 (1979 MJ8)          Discovered 1979-Jun-25 by Helin, E. F., Bus, S. J. at Siding Spring
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 1979 MJ8 = 2002 AF87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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