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215128 (1999 RO138)
Classification: Main-belt Asteroid          SPK-ID: 2215128
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1942972953452032 4.2988e-08  
a 2.614022371187896 1.2335e-08 au
q 2.106124894494233 1.1562e-07 au
i 11.46429688236769 3.2471e-06 deg
node 261.4397573053829 2.231e-05 deg
peri 81.46161578033013 2.4921e-05 deg
M 332.3777209124893 8.8765e-06 deg
tp 2459118.945723496987
(2020-Sep-26.44572350)
3.7851e-05 TDB
period 1543.69812584346
4.23
1.0926e-05
2.991e-08
d
yr
n .2332062169235969 1.6506e-09 deg/d
Q 3.121919847881559 1.4731e-08 au
  Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      7724 days (21.15 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50777  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 03:43:54  

Additional Information
 Earth MOID = 1.13439 au 
 Jupiter MOID = 2.38711 au 
 T_jup = 3.353 
[ 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 16.0   n/a MPO437029  

215128 (1999 RO138)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08

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