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JPL Small-Body Database Browser
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17769 (1998 EM9)
Classification: Main-belt Asteroid          SPK-ID: 2017769
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06276211073675964 3.6971e-08  
a 2.391345885192684 1.0415e-08 au
q 2.241259969936326 9.0518e-08 au
i 7.650850390202987 4.5926e-06 deg
node 27.92850727829989 3.0504e-05 deg
peri 76.11769832148319 4.7937e-05 deg
M 305.3809276534543 3.7331e-05 deg
tp 2458805.429198581204
(2019-Nov-17.92919858)
0.00014028 TDB
period 1350.709712189009
3.70
8.8241e-06
2.416e-08
d
yr
n .2665265502656162 1.7412e-09 deg/d
Q 2.541431800449041 1.1069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1352  
   data-arc span      25467 days (69.72 yr)  
   first obs. used      1950-03-17  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51738  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:22:25  

Additional Information
 Earth MOID = 1.27264 au 
 Jupiter MOID = 2.53641 au 
 T_jup = 3.517 
[ 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 14.2   n/a MPO358802  

17769 (1998 EM9)          Discovered 1998-Mar-15 by Kobayashi, T. at Oizumi
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 EM9 = 1991 HA5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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