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17377 (1981 EF5)
Classification: Main-belt Asteroid          SPK-ID: 2017377
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2134060399967651 5.4395e-08  
a 2.598807613665375 1.1663e-08 au
q 2.044206372119604 1.3996e-07 au
i 10.45842471917633 6.6698e-06 deg
node 224.3651211962195 2.1024e-05 deg
peri 225.1179204136355 2.4894e-05 deg
M 199.5418972813063 1.109e-05 deg
tp 2459682.554022367799
(2022-Apr-13.05402237)
4.7062e-05 TDB
period 1530.240255195301
4.19
1.0302e-05
2.821e-08
d
yr
n .2352571753211746 1.5838e-09 deg/d
Q 3.153408855211146 1.4153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1012  
   data-arc span      23592 days (64.59 yr)  
   first obs. used      1954-10-06  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50826  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:30:37  

Additional Information
 Earth MOID = 1.07461 au 
 Jupiter MOID = 2.15431 au 
 T_jup = 3.360 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.7   n/a MPO435861  
diameter diameter 6.420 km 0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.075   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17377 (1981 EF5)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EF5 = 1975 VK3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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