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109888 (2001 SY9)
Classification: Main-belt Asteroid          SPK-ID: 2109888
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .127758634195788 7.5563e-08  
a 2.638274701774602 1.1265e-08 au
q 2.301212329242579 1.9707e-07 au
i 10.06439315152218 9.2137e-06 deg
node 35.34375094596307 2.3151e-05 deg
peri 27.67072652657657 3.9982e-05 deg
M 109.9026484544143 2.9106e-05 deg
tp 2458522.658237126150
(2019-Feb-08.15823713)
0.00012664 TDB
period 1565.231020851497
4.29
1.0025e-05
2.745e-08
d
yr
n .2299979972312058 1.4731e-09 deg/d
Q 2.975337074306625 1.2705e-08 au
  Orbit Determination Parameters
   # obs. used (total)      780  
   data-arc span      7540 days (20.64 yr)  
   first obs. used      1999-05-16  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 15:54:05  

Additional Information
 Earth MOID = 1.31839 au 
 Jupiter MOID = 2.39133 au 
 T_jup = 3.363 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456511.5 (2013-Aug-07.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1259733264159257 7.4883e-08  
q 2.307120225441213 1.947e-07 au
tp 2456957.691505797042
(2014-Oct-27.19150580)
0.0001303 TDB
node 35.42363080676632 2.318e-05 deg
peri 27.87648238547831 4.0438e-05 deg
i 10.05631189435056 9.2046e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      780  
   data-arc span      7540 days (20.64 yr)  
   first obs. used      1999-05-16  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 15:54:05  

Additional Information
 Jupiter MOID = 2.39133 au 
 T_jup = 3.363 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.607425638821951E-15 -1.456216673265486E-14 -7.604269822751612E-12 4.289080403711277E-14 -1.962179826740942E-12 -1.04602941327103E-14
q -1.456216673265486E-14 3.790734653746697E-14 1.983648396407301E-11 -1.114433447305904E-13 5.108840731930128E-12 2.754019887739589E-14
tp -7.604269822751612E-12 1.983648396407301E-11 1.697798941989581E-8 -6.520785553444003E-11 4.326634362969089E-9 1.396040347332554E-11
node 4.289080403711277E-14 -1.114433447305904E-13 -6.520785553444003E-11 5.373197036360372E-10 -5.449470135748118E-10 -8.003045645534955E-11
peri -1.962179826740942E-12 5.108840731930128E-12 4.326634362969089E-9 -5.449470135748118E-10 1.635251493066773E-9 8.223850957840107E-11
i -1.04602941327103E-14 2.754019887739589E-14 1.396040347332554E-11 -8.003045645534955E-11 8.223850957840107E-11 8.47246794978832E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO231978  

109888 (2001 SY9)          Discovered 2001-Sep-18 by Yeung, W. K. Y. at Desert Eagle
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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