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66631 (1999 RP209)
Classification: Main-belt Asteroid          SPK-ID: 2066631
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1995602397133136 5.827e-08  
a 2.647591558522334 1.4069e-08 au
q 2.119237552440671 1.5672e-07 au
i 12.67755251629448 5.3922e-06 deg
node 233.07614366249 2.6856e-05 deg
peri 113.6639551840499 3.0605e-05 deg
M 305.7176638887559 1.282e-05 deg
tp 2459237.763502675460
(2021-Jan-23.26350268)
5.6659e-05 TDB
period 1573.52956932656
4.31
1.2543e-05
3.434e-08
d
yr
n .2287850238200945 1.8237e-09 deg/d
Q 3.175945564603996 1.6877e-08 au
  Orbit Determination Parameters
   # obs. used (total)      424  
   data-arc span      8510 days (23.30 yr)  
   first obs. used      1995-12-20  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58116  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:15:55  

Additional Information
 Earth MOID = 1.15063 au 
 Jupiter MOID = 2.44085 au 
 T_jup = 3.329 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456524.5 (2013-Aug-20.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1979332268456388 5.8444e-08  
q 2.12472290940583 1.5725e-07 au
tp 2456094.928670966708
(2012-Jun-16.42867097)
5.5219e-05 TDB
node 233.1704165588318 2.6817e-05 deg
peri 114.2089424217221 3.0639e-05 deg
i 12.68352298055348 5.3938e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      424  
   data-arc span      8510 days (23.30 yr)  
   first obs. used      1995-12-20  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58116  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:15:55  

Additional Information
 Jupiter MOID = 2.44085 au 
 T_jup = 3.329 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.415710533495134E-15 -9.166162637986721E-15 5.968796769220661E-13 8.13803681009334E-15 1.928007063705897E-13 -2.238719057592426E-14
q -9.166162637986721E-15 2.472639201595845E-14 -1.69646287104186E-12 -2.016042384726122E-14 -5.361435656127285E-13 5.970073519738413E-14
tp 5.968796769220661E-13 -1.69646287104186E-12 3.049140544701674E-9 -4.590545880704017E-12 8.506056798570873E-10 -1.095128909581669E-12
node 8.13803681009334E-15 -2.016042384726122E-14 -4.590545880704017E-12 7.191434199971135E-10 -7.031389434957185E-10 -3.372397607342513E-11
peri 1.928007063705897E-13 -5.361435656127285E-13 8.506056798570873E-10 -7.031389434957185E-10 9.387566469200291E-10 3.256317262619517E-11
i -2.238719057592426E-14 5.970073519738413E-14 -1.095128909581669E-12 -3.372397607342513E-11 3.256317262619517E-11 2.909271770753602E-11

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 15.6   n/a MPO253782  

66631 (1999 RP209)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RP209 = 1995 YM14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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