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58681 (1998 AJ7)
Classification: Main-belt Asteroid          SPK-ID: 2058681
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731520304451381 4.4593e-08  
a 2.607339416864417 1.9142e-08 au
q 2.155873302774701 1.1866e-07 au
i 3.539290944639903 6.7239e-06 deg
node 319.670410980632 7.8733e-05 deg
peri 88.7067234337043 8.293e-05 deg
M 191.671639462577 2.6447e-05 deg
tp 2458319.534245369291
(2018-Jul-20.03424537)
0.00011804 JED
period 1537.782032133536
4.21
1.6935e-05
4.637e-08
d
yr
n .234103398581483 2.5781e-09 deg/d
Q 3.058805530954133 2.2457e-08 au
  Orbit Determination Parameters
   # obs. used (total)      893  
   data-arc span      7191 days (19.69 yr)  
   first obs. used      1996-08-09  
   last obs. used      2016-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50353  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 14:48:25  

Additional Information
 Earth MOID = 1.16786 au 
 Jupiter MOID = 2.33824 au 
 T_jup = 3.387 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9 mag n/a MPO324826  

58681 (1998 AJ7)          Discovered 1998-Jan-05 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 AJ7 = 1997 YJ20 = 2001 TQ37 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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