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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1714997884445084 8.454e-08  
a 2.608069710208867 3.4695e-08 AU
q 2.160786306659516 2.4225e-07 AU
i 3.541541913567705 7.7549e-06 deg
node 319.707374257467 0.00010507 deg
peri 88.79118985287609 0.00011149 deg
M 4.473617646994356 4.1631e-05 deg
tp 2456781.382390693797
(2014-May-03.88239069)
0.00017759 JED
period 1538.428156652411
4.21
3.0698e-05
8.405e-08
d
yr
n .2340050774833403 4.6694e-09 deg/d
Q 3.055353113758218 4.0645e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      602  
   data-arc span      6347 days (17.38 yr)  
   first obs. used      1996-08-09  
   last obs. used      2013-12-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54722  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 09:55:47  

Additional Information
 Earth MOID = 1.17316 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 14.8 mag n/a MPO267893  

58681 (1998 AJ7)          Discovered 1998-Jan-05 by BAO Schmidt CCD Asteroid Program at Xinglong (327)
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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