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43782 (1989 US2)
Classification: Main-belt Asteroid          SPK-ID: 2043782
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2832716839033796 3.6941e-08  
a 2.686640312105682 1.0447e-08 au
q 1.925591186852804 9.6197e-08 au
i 11.30529039276379 4.2261e-06 deg
node 220.2620447127576 1.9408e-05 deg
peri 161.1704096647584 2.063e-05 deg
M 77.83940541231628 7.4464e-06 deg
tp 2459048.715897383551
(2020-Jul-18.21589738)
3.2541e-05 TDB
period 1608.46908167815
4.40
9.3819e-06
2.569e-08
d
yr
n .223815306181953 1.3055e-09 deg/d
Q 3.44768943735856 1.3407e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1506  
   data-arc span      11486 days (31.45 yr)  
   first obs. used      1989-10-29  
   last obs. used      2021-04-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45907  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 21:06:42  

Additional Information
 Earth MOID = .932333 au 
 Jupiter MOID = 2.03407 au 
 T_jup = 3.288 
[ 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 14.15   n/a E2021B10  

43782 (1989 US2)          Discovered 1989-Oct-29 by Hioki, T., Kawasato, N. at Okutama
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 US2 = 1998 XK80 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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