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91567 (1999 RU239)
Classification: Main-belt Asteroid          SPK-ID: 2091567
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05678376567282484 4.1541e-08  
a 2.972259486513079 2.0683e-08 au
q 2.80348340031209 1.2796e-07 au
i 8.423614586103392 4.7856e-06 deg
node 153.0210221512813 2.4748e-05 deg
peri 213.2911673697378 4.3494e-05 deg
M 14.43106905418228 3.5436e-05 deg
tp 2458925.471802366136
(2020-Mar-16.97180237)
0.00018424 TDB
period 1871.666682958823
5.12
1.9536e-05
5.349e-08
d
yr
n .1923419395545868 2.0076e-09 deg/d
Q 3.141035572714069 2.1857e-08 au
  Orbit Determination Parameters
   # obs. used (total)      954  
   data-arc span      7394 days (20.24 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55259  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:33:36  

Additional Information
 Earth MOID = 1.80435 au 
 Jupiter MOID = 2.16232 au 
 T_jup = 3.244 
[ 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 14.2   n/a MPO493512  

91567 (1999 RU239)          Discovered 1999-Sep-08 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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