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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2801639111508289 4.0756e-08  
a 2.612428576504696 1.771e-08 au
q 1.880520368908948 1.1164e-07 au
i 4.07072244580614 4.141e-06 deg
node 231.4749704049905 6.4693e-05 deg
peri 159.6591991550993 6.5358e-05 deg
M 181.6174115348911 1.4085e-05 deg
tp 2459764.714064726958
(2022-Jul-04.21406473)
6.7136e-05 TDB
period 1542.28652958199
4.22
1.5683e-05
4.294e-08
d
yr
n .2334196617132951 2.3736e-09 deg/d
Q 3.344336784100444 2.2672e-08 au
  Orbit Determination Parameters
   # obs. used (total)      660  
   data-arc span      14918 days (40.84 yr)  
   first obs. used      1979-06-24  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54106  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:17:54  

Additional Information
 Earth MOID = .887016 au 
 Jupiter MOID = 2.10632 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 15.7   n/a MPO417615  
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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