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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06268163072887291 3.5693e-08  
a 2.391176261602595 8.9274e-09 au
q 2.241293434165175 8.6006e-08 au
i 7.650498997179886 3.5696e-06 deg
node 27.91872510997649 3.0281e-05 deg
peri 75.92549217816116 4.4e-05 deg
M 52.175104460129 3.0526e-05 deg
tp 2458804.761327215813
(2019-Nov-17.26132722)
0.00011473 TDB
period 1350.566001380136
3.70
7.5635e-06
2.071e-08
d
yr
n .266554910779716 1.4928e-09 deg/d
Q 2.541059089040016 9.487e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1663  
   data-arc span      25610 days (70.12 yr)  
   first obs. used      1950-03-17  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47733  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:40:49  

Additional Information
 Earth MOID = 1.27251 au 
 Jupiter MOID = 2.53561 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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