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103151 (1999 XR217)
Classification: Main-belt Asteroid          SPK-ID: 2103151
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1634988123596755 3.1185e-08  
a 2.641661724293196 1.3404e-08 au
q 2.209753169715246 8.1385e-08 au
i 4.795874352456737 3.6239e-06 deg
node 100.8964515342328 5.9842e-05 deg
peri 177.1418186745652 6.1881e-05 deg
M 155.1827931470537 1.6531e-05 deg
tp 2458524.486613379105
(2019-Feb-09.98661338)
7.0565e-05 TDB
period 1568.246158276748
4.29
1.1936e-05
3.268e-08
d
yr
n .2295557990689309 1.7472e-09 deg/d
Q 3.073570278871145 1.5596e-08 au
  Orbit Determination Parameters
   # obs. used (total)      521  
   data-arc span      11472 days (31.41 yr)  
   first obs. used      1989-09-05  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56811  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:45:21  

Additional Information
 Earth MOID = 1.19145 au 
 Jupiter MOID = 2.05282 au 
 T_jup = 3.371 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457277.5 (2015-Sep-12.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1638843405420268 3.1032e-08  
q 2.208604642242024 8.1002e-08 au
tp 2456958.356388742998
(2014-Oct-27.85638874)
6.8829e-05 TDB
node 100.9261833103244 5.9897e-05 deg
peri 177.4479384149182 6.1944e-05 deg
i 4.794208789582475 3.6221e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      521  
   data-arc span      11472 days (31.41 yr)  
   first obs. used      1989-09-05  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56811  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:45:21  

Additional Information
 Jupiter MOID = 2.05282 au 
 T_jup = 3.371 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.630141952037976E-16 -2.489993067714869E-15 -1.075859718911063E-13 2.139706170646836E-15 -4.140882393055073E-14 -4.170605788215318E-16
q -2.489993067714869E-15 6.56133906170412E-15 3.328394855808253E-13 -3.21605944391467E-15 1.232971583258608E-13 1.191448708403013E-15
tp -1.075859718911063E-13 3.328394855808253E-13 4.737476014772791E-9 4.08220697566011E-11 1.12152683771381E-9 -8.963999485765982E-13
node 2.139706170646836E-15 -3.21605944391467E-15 4.08220697566011E-11 3.587662154845212E-9 -3.565008586469487E-9 -4.083058194722042E-12
peri -4.140882393055073E-14 1.232971583258608E-13 1.12152683771381E-9 -3.565008586469487E-9 3.837058264351418E-9 3.85705311194843E-12
i -4.170605788215318E-16 1.191448708403013E-15 -8.963999485765982E-13 -4.083058194722042E-12 3.85705311194843E-12 1.311989141888469E-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 15.9   n/a MPO436484  

103151 (1999 XR217)          Discovered 1999-Dec-13 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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