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22461 (1997 AB7)
Classification: Main-belt Asteroid          SPK-ID: 2022461
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09879567242777849 3.4022e-08  
a 2.407822528504006 7.2522e-09 au
q 2.169940082713699 7.9898e-08 au
i 2.777914446754959 2.8061e-06 deg
node 107.526186887917 7.1745e-05 deg
peri 96.30538805824165 7.3578e-05 deg
M 82.54560456669057 1.4657e-05 deg
tp 2458887.584850870930
(2020-Feb-08.08485087)
5.5791e-05 TDB
period 1364.693544590288
3.74
6.1656e-06
1.688e-08
d
yr
n .2637954883182804 1.1918e-09 deg/d
Q 2.645704974294314 7.9687e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1673  
   data-arc span      8594 days (23.53 yr)  
   first obs. used      1997-01-09  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50747  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:06:36  

Additional Information
 Earth MOID = 1.16733 au 
 Jupiter MOID = 2.31213 au 
 T_jup = 3.513 
[ 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 15.16   n/a E2021B10  

22461 (1997 AB7)          Discovered 1997-Jan-09 by Kobayashi, T. at Oizumi
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 AB7 = 1998 MJ44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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