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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2131677387808742 5.2852e-08  
a 2.598010358288371 1.1967e-08 au
q 2.04419836488275 1.3503e-07 au
i 10.45089783378197 6.6208e-06 deg
node 224.2214839553593 1.9936e-05 deg
peri 225.4678552556402 2.3882e-05 deg
M 246.2931493723286 1.109e-05 deg
tp 2459683.607605334439
(2022-Apr-14.10760533)
4.6924e-05 TDB
period 1529.536144571342
4.19
1.0568e-05
2.893e-08
d
yr
n .2353654742176042 1.6262e-09 deg/d
Q 3.151822351693991 1.4517e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1045  
   data-arc span      23643 days (64.73 yr)  
   first obs. used      1954-10-06  
   last obs. used      2019-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51766  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:02:12  

Additional Information
 Earth MOID = 1.07445 au 
 Jupiter MOID = 2.15593 au 
 T_jup = 3.361 
[ 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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