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101616 (1999 CL9)
Classification: Main-belt Asteroid          SPK-ID: 2101616
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .155523934199021 5.8137e-08  
a 2.659303330798647 1.5006e-08 au
q 2.245718014564281 1.5609e-07 au
i 11.65940096262431 5.5242e-06 deg
node 10.63692949513353 2.0824e-05 deg
peri 171.2868407889357 2.4925e-05 deg
M 344.4395787336481 1.6253e-05 deg
tp 2459268.965075724134
(2021-Feb-23.46507572)
7.1788e-05 TDB
period 1583.982004008217
4.34
1.3407e-05
3.671e-08
d
yr
n .2272753093715909 1.9237e-09 deg/d
Q 3.072888647033013 1.734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      786  
   data-arc span      8013 days (21.94 yr)  
   first obs. used      1999-02-10  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53182  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:29:13  

Additional Information
 Earth MOID = 1.24816 au 
 Jupiter MOID = 1.88364 au 
 T_jup = 3.340 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456970.5 (2014-Nov-09.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1560004113310505 5.8205e-08  
q 2.243949790166887 1.5628e-07 au
tp 2457686.744649095719
(2016-Oct-25.24464910)
6.6442e-05 TDB
node 10.65829370313194 2.0819e-05 deg
peri 171.6017599890703 2.4893e-05 deg
i 11.66246772799351 5.525e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      786  
   data-arc span      8013 days (21.94 yr)  
   first obs. used      1999-02-10  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53182  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:29:13  

Additional Information
 Jupiter MOID = 1.88364 au 
 T_jup = 3.340 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.387853949798332E-15 -9.067062162474311E-15 -6.040973354079315E-13 -1.039726897351955E-14 1.220028187393751E-14 -3.144989787065448E-15
q -9.067062162474311E-15 2.442364077428247E-14 1.860550815194059E-12 2.702375437362693E-14 -1.900167170157795E-16 9.34944697380809E-15
tp -6.040973354079315E-13 1.860550815194059E-12 4.414484619993644E-9 -6.972134232665839E-12 9.048740181410333E-10 9.445743079575408E-12
node -1.039726897351955E-14 2.702375437362693E-14 -6.972134232665839E-12 4.334417153101712E-10 -4.25700459421886E-10 -3.915984948571025E-12
peri 1.220028187393751E-14 -1.900167170157795E-16 9.048740181410333E-10 -4.25700459421886E-10 6.196385332199672E-10 5.668765751060128E-12
i -3.144989787065448E-15 9.34944697380809E-15 9.445743079575408E-12 -3.915984948571025E-12 5.668765751060128E-12 3.052611987634308E-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 14.82   n/a E2021B55  

101616 (1999 CL9)          Discovered 1999-Feb-12 by Urata, T. at Oohira
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1999 CL9 = 2001 RX87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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