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161995 (1983 LB)
Classification: Amor [NEO]          SPK-ID: 2161995
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 109 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4791515077408741 6.1534e-08  
a 2.286389673459287 6.1486e-09 au
q 1.190862614138105 1.4124e-07 au
i 25.27178199196349 1.1684e-05 deg
node 81.17910794270705 1.4795e-05 deg
peri 220.7195560784545 2.2067e-05 deg
M 345.8201232323038 1.1655e-05 deg
tp 2459446.238622978349
(2021-Aug-19.73862298)
4.0896e-05 TDB
period 1262.768680260877
3.46
5.0938e-06
1.395e-08
d
yr
n .2850878435832183 1.15e-09 deg/d
Q 3.38191673278047 9.0947e-09 au
  Orbit Determination Parameters
   # obs. used (total)      447  
   data-arc span      13929 days (38.14 yr)  
   first obs. used      1983-06-13  
   last obs. used      2021-08-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48329  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-02 05:54:47  

Additional Information
 Earth MOID = .245177 au 
 Jupiter MOID = 2.06507 au 
 T_jup = 3.328 
[ 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 17.30   n/a MPO614063  

161995 (1983 LB)          Discovered 1983-Jun-13 by Swann, S. R., Helin, E. F. at Palomar
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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