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123911 (2001 DF89)
Classification: Main-belt Asteroid          SPK-ID: 2123911
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07325193958294154 4.4022e-08  
a 2.97661391303594 2.4551e-08 au
q 2.758571170516488 1.2668e-07 au
i 10.59608268322038 4.663e-06 deg
node 164.685473995105 2.5815e-05 deg
peri 105.5514713510173 4.2924e-05 deg
M 183.5083007521584 3.6459e-05 deg
tp 2459920.110606479236
(2022-Dec-06.61060648)
0.00019299 TDB
period 1875.781239250399
5.14
2.3207e-05
6.354e-08
d
yr
n .1919200344192926 2.3744e-09 deg/d
Q 3.194656655555392 2.6349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      501  
   data-arc span      7176 days (19.65 yr)  
   first obs. used      2001-02-27  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58115  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:31:37  

Additional Information
 Earth MOID = 1.76673 au 
 Jupiter MOID = 1.93933 au 
 T_jup = 3.231 
[ show covariance matrix ]

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 15.2   n/a MPO351723  

123911 (2001 DF89)          Discovered 2001-Feb-27 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 2001 DF89 = 2003 US139 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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