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17392 (1981 EY40)
Classification: Main-belt Asteroid          SPK-ID: 2017392
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06897493279928389 3.8043e-08  
a 2.677291375975938 1.3123e-08 au
q 2.492625383233895 1.031e-07 au
i 1.36840109126573 3.9933e-06 deg
node 217.7005985482128 0.0001834 deg
peri 85.11134772904852 0.00018665 deg
M 268.8413212763973 3.7813e-05 deg
tp 2459605.670116671521
(2022-Jan-26.17011667)
0.00016903 TDB
period 1600.08069493861
4.38
1.1764e-05
3.221e-08
d
yr
n .2249886528465442 1.6541e-09 deg/d
Q 2.86195736871798 1.4028e-08 au
  Orbit Determination Parameters
   # obs. used (total)      996  
   data-arc span      15541 days (42.55 yr)  
   first obs. used      1978-09-01  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52282  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:32:41  

Additional Information
 Earth MOID = 1.47571 au 
 Jupiter MOID = 2.27501 au 
 T_jup = 3.374 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456983.5 (2014-Nov-22.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06984560820904304 3.8018e-08  
q 2.490184771565185 1.0317e-07 au
tp 2456395.904093403629
(2013-Apr-13.40409340)
0.00016034 TDB
node 217.9432183909609 0.0001841 deg
peri 83.09307567589693 0.00018724 deg
i 1.365003289733802 3.9872e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      996  
   data-arc span      15541 days (42.55 yr)  
   first obs. used      1978-09-01  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52282  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:32:41  

Additional Information
 Jupiter MOID = 2.27501 au 
 T_jup = 3.374 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.445351868107467E-15 -3.895044260005771E-15 1.216226054401612E-12 1.463634335857522E-15 2.71392195606834E-13 2.98794076044855E-16
q -3.895044260005771E-15 1.064488849267245E-14 -2.832243341641975E-12 -1.625792658224953E-15 -6.292345678242299E-13 -7.255121209705994E-16
tp 1.216226054401612E-12 -2.832243341641975E-12 2.570963539338135E-8 7.084692356882228E-11 5.499862702203268E-9 6.09631784543142E-13
node 1.463634335857522E-15 -1.625792658224953E-15 7.084692356882228E-11 3.389288767384599E-8 -3.386736255701696E-8 -1.412067317170991E-10
peri 2.71392195606834E-13 -6.292345678242299E-13 5.499862702203268E-9 -3.386736255701696E-8 3.505818462316138E-8 1.413046597270945E-10
i 2.98794076044855E-16 -7.255121209705994E-16 6.09631784543142E-13 -1.412067317170991E-10 1.413046597270945E-10 1.589793987381726E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO467892  

17392 (1981 EY40)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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