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120689 (1997 EG5)
Classification: Main-belt Asteroid          SPK-ID: 2120689
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1071590386703014 4.5082e-08  
a 2.734080090666914 1.3873e-08 au
q 2.441098696503436 1.2097e-07 au
i 1.047527366064334 4.6318e-06 deg
node 185.3228672474759 0.00024096 deg
peri 31.93847857662884 0.00024179 deg
M 62.39210733862328 1.888e-05 deg
tp 2458914.317924381515
(2020-Mar-05.81792438)
8.668e-05 TDB
period 1651.259295723092
4.52
1.2568e-05
3.441e-08
d
yr
n .2180154267306365 1.6593e-09 deg/d
Q 3.027061484830391 1.5359e-08 au
  Orbit Determination Parameters
   # obs. used (total)      478  
   data-arc span      8527 days (23.35 yr)  
   first obs. used      1997-03-04  
   last obs. used      2020-07-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56464  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:55:29  

Additional Information
 Earth MOID = 1.43275 au 
 Jupiter MOID = 1.93992 au 
 T_jup = 3.344 
[ 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 16.39   n/a E2021B55  
diameter diameter 4.160 km 0.465 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.028   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120689 (1997 EG5)          Discovered 1997-Mar-04 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1997 EG5 = 1999 UW34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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