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118242 (1997 NM3)
Classification: Main-belt Asteroid          SPK-ID: 2118242
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1793111673886572 2.9558e-08  
a 2.345303834554891 9.0374e-09 au
q 1.924764666099759 6.7355e-08 au
i 2.678900690850753 4.0501e-06 deg
node 150.6916277601388 6.7685e-05 deg
peri 83.06770523311461 6.8726e-05 deg
M 178.0896133795474 1.2701e-05 deg
tp 2458351.517198814746
(2018-Aug-21.01719881)
4.4664e-05 TDB
period 1311.889020325781
3.59
7.5828e-06
2.076e-08
d
yr
n .2744134560334999 1.5861e-09 deg/d
Q 2.765843003010022 1.0658e-08 au
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      8147 days (22.31 yr)  
   first obs. used      1997-07-09  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5485  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 13:58:29  

Additional Information
 Earth MOID = .91591 au 
 Jupiter MOID = 2.23173 au 
 T_jup = 3.538 
[ 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 15.8   n/a MPO493675  

118242 (1997 NM3)          Discovered 1997-Jul-09 by Comba, P. G. at Prescott
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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Alternate Designations
 1997 NM3 = 1997 ON1 = 2000 DH61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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