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171421 (2007 AG11)
Classification: Main-belt Asteroid          SPK-ID: 2171421
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02927849534635595 6.3945e-08  
a 3.142667189858332 3.5347e-08 au
q 3.050654623164919 1.893e-07 au
i 9.304667349764562 5.9714e-06 deg
node 272.8292696113289 4.0399e-05 deg
peri 254.9299969461495 0.00011221 deg
M 109.5349398537965 0.00010265 deg
tp 2458581.349557901555
(2019-Apr-07.84955790)
0.00058197 TDB
period 2034.913785984196
5.57
3.4332e-05
9.4e-08
d
yr
n .1769116718750245 2.9847e-09 deg/d
Q 3.234679756551744 3.6382e-08 au
  Orbit Determination Parameters
   # obs. used (total)      255  
   data-arc span      8969 days (24.56 yr)  
   first obs. used      1995-12-24  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55239  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:48:30  

Additional Information
 Earth MOID = 2.07509 au 
 Jupiter MOID = 1.87449 au 
 T_jup = 3.189 
[ 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 15.31   n/a E2021B55  

171421 (2007 AG11)          Discovered 2007-Jan-14 by Ries, W. at Altschwendt
Reference: 20071124/Numbers.arcLast Updated: 2007-11-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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