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17765 (1998 EZ2)
Classification: Main-belt Asteroid          SPK-ID: 2017765
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1676262618968652 2.3902e-08  
a 2.517454700774206 1.1249e-08 au
q 2.095463179788735 5.9204e-08 au
i 6.329972948720982 4.2938e-07 deg
node 43.69198919808854 8.706e-06 deg
peri 243.1558674120642 1.2115e-05 deg
M 137.1088671316833 6.9834e-06 deg
tp 2458644.846613643367
(2019-Jun-10.34661364)
2.7094e-05 TDB
period 1458.951731373203
3.99
9.7786e-06
2.677e-08
d
yr
n .2467525088449353 1.6538e-09 deg/d
Q 2.939446221759678 1.3134e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1825  
   data-arc span      25914 days (70.95 yr)  
   first obs. used      1950-03-21  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47491  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:12:18  

Additional Information
 Earth MOID = 1.08651 au 
 Jupiter MOID = 2.2358 au 
 T_jup = 3.430 
[ 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 13.8   n/a MPO502304  
diameter diameter 4.938 km 0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.166   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17765 (1998 EZ2)          Discovered 1998-Mar-01 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 EZ2 = 1987 MX 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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