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118356 (1999 EM3)
Classification: Main-belt Asteroid          SPK-ID: 2118356
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .246152744900427 7.6538e-08  
a 2.564515014573472 1.5166e-08 au
q 1.933252604397853 2.0317e-07 au
i 15.20406490517214 6.7152e-06 deg
node 13.22469431110929 2.2592e-05 deg
peri 141.4672272507472 2.5695e-05 deg
M 78.93837148066336 1.6747e-05 deg
tp 2458671.578730503856
(2019-Jul-07.07873050)
6.7536e-05 TDB
period 1500.051936688581
4.11
1.3306e-05
3.643e-08
d
yr
n .2399916904175418 2.1288e-09 deg/d
Q 3.195777424749091 1.8899e-08 au
  Orbit Determination Parameters
   # obs. used (total)      623  
   data-arc span      7358 days (20.15 yr)  
   first obs. used      1999-02-09  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58705  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:16:51  

Additional Information
 Earth MOID = .962573 au 
 Jupiter MOID = 1.84101 au 
 T_jup = 3.342 
[ 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 15.1   n/a MPO160699  
diameter diameter 6.198 km 1.519 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.042   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

118356 (1999 EM3)          Discovered 1999-Mar-12 by Bickel, W. at Bergisch Gladbach
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 1999 EM3 = 2001 SD154 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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