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66617 (1999 RO201)
Classification: Main-belt Asteroid          SPK-ID: 2066617
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2243692094131991 4.2947e-08  
a 2.774158543336669 2.3475e-08 au
q 2.151722784181349 1.237e-07 au
i 8.949810809868348 4.89e-06 deg
node 253.9558563350369 3.5598e-05 deg
peri 33.53432284102576 3.8418e-05 deg
M 267.0796610848813 1.8846e-05 deg
tp 2459636.115803940547
(2022-Feb-25.61580394)
9.1866e-05 TDB
period 1687.700359787229
4.62
2.1422e-05
5.865e-08
d
yr
n .2133080069055539 2.7075e-09 deg/d
Q 3.39659430249199 2.8742e-08 au
  Orbit Determination Parameters
   # obs. used (total)      438  
   data-arc span      7862 days (21.52 yr)  
   first obs. used      1999-09-08  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56274  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:02:13  

Additional Information
 Earth MOID = 1.13992 au 
 Jupiter MOID = 1.79157 au 
 T_jup = 3.281 
[ 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 15.28   n/a E2021B10  

66617 (1999 RO201)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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