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65647 (1981 EZ28)
Classification: Main-belt Asteroid          SPK-ID: 2065647
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1500658838485545 6.704e-08  
a 2.288873949782344 1.2572e-08 au
q 1.945392057490325 1.5447e-07 au
i 26.0133228889453 7.0057e-06 deg
node 342.0018950197123 1.0416e-05 deg
peri 355.104752170997 2.2132e-05 deg
M 325.135503475632 2.5032e-05 deg
tp 2459122.993244669248
(2020-Sep-30.49324467)
8.8427e-05 TDB
period 1264.827330866745
3.46
1.0421e-05
2.853e-08
d
yr
n .2846238306325211 2.345e-09 deg/d
Q 2.632355842074364 1.4458e-08 au
  Orbit Determination Parameters
   # obs. used (total)      944  
   data-arc span      14368 days (39.34 yr)  
   first obs. used      1981-02-14  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50174  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:09:21  

Additional Information
 Earth MOID = .93757 au 
 Jupiter MOID = 2.77403 au 
 T_jup = 3.452 
[ 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 14.3   n/a MPO436239  
diameter diameter 2.882 km 0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.579   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

65647 (1981 EZ28)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EZ28 = 1989 RV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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