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91869 (1999 UU38)
Classification: Main-belt Asteroid          SPK-ID: 2091869
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07160816494643332 3.5645e-08  
a 3.195345318699869 1.9791e-08 au
q 2.966532504057596 1.1207e-07 au
i 13.86718620520569 4.8588e-06 deg
node 8.105969466621756 1.6239e-05 deg
peri 105.6377641404118 3.8697e-05 deg
M 213.5072439174711 3.5212e-05 deg
tp 2460245.463022115489
(2023-Oct-27.96302212)
0.00020602 TDB
period 2086.292156244208
5.71
1.9383e-05
5.307e-08
d
yr
n .1725549314474155 1.6031e-09 deg/d
Q 3.424158133342143 2.1208e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1133  
   data-arc span      7996 days (21.89 yr)  
   first obs. used      1999-09-18  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53264  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:02:52  

Additional Information
 Earth MOID = 2.02004 au 
 Jupiter MOID = 1.67334 au 
 T_jup = 3.146 
[ 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 13.63   n/a MPO637247  

91869 (1999 UU38)          Discovered 1999-Oct-29 by LONEOS at Anderson Mesa
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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