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181891 (1999 RD106)
Classification: Main-belt Asteroid          SPK-ID: 2181891
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1465995676472187 4.9942e-08  
a 2.202743677543477 1.1006e-08 au
q 1.879822406777959 1.1114e-07 au
i 5.047446678195458 4.5089e-06 deg
node 219.884255552901 5.923e-05 deg
peri 142.8362682761149 6.1445e-05 deg
M 172.7601146692666 1.8989e-05 deg
tp 2458627.459450235310
(2019-May-23.95945024)
6.0325e-05 TDB
period 1194.110100645744
3.27
8.9496e-06
2.45e-08
d
yr
n .3014797377606313 2.2595e-09 deg/d
Q 2.525664948308996 1.262e-08 au
  Orbit Determination Parameters
   # obs. used (total)      429  
   data-arc span      10982 days (30.07 yr)  
   first obs. used      1991-02-19  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53724  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:28  

Additional Information
 Earth MOID = .879049 au 
 Jupiter MOID = 2.94414 au 
 T_jup = 3.644 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456903.5 (2014-Sep-03.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1472430508027544 5.008e-08  
q 1.878025506836871 1.1148e-07 au
tp 2457432.439070949680
(2016-Feb-13.93907095)
5.4873e-05 TDB
node 219.9177415807259 5.9247e-05 deg
peri 142.658482797021 6.1422e-05 deg
i 5.046448789994315 4.5108e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      429  
   data-arc span      10982 days (30.07 yr)  
   first obs. used      1991-02-19  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53724  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:28  

Additional Information
 Jupiter MOID = 2.94414 au 
 T_jup = 3.644 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.508046877157467E-15 -5.563644993671825E-15 -5.6198266975174E-13 -2.168768090081972E-14 -9.04117783423616E-14 -8.37320325145171E-15
q -5.563644993671825E-15 1.242880922813299E-14 1.492848016941482E-12 4.72650353370078E-14 2.618606254301424E-13 1.909086070676743E-14
tp -5.6198266975174E-13 1.492848016941482E-12 3.011009091707022E-9 1.034612728912234E-11 9.090617936152076E-10 5.313058793150809E-12
node -2.168768090081972E-14 4.72650353370078E-14 1.034612728912234E-11 3.510169382460697E-9 -3.492695459949584E-9 -7.155263430910677E-11
peri -9.04117783423616E-14 2.618606254301424E-13 9.090617936152076E-10 -3.492695459949584E-9 3.772673015218733E-9 7.272381145812256E-11
i -8.37320325145171E-15 1.909086070676743E-14 5.313058793150809E-12 -7.155263430910677E-11 7.272381145812256E-11 2.034739878984391E-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 16.51   n/a E2021B55  

181891 (1999 RD106)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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