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181706 (1991 UY3)
Classification: Main-belt Asteroid          SPK-ID: 2181706
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2504776423579166 3.5306e-08  
a 2.478842463530286 1.2659e-08 au
q 1.85794784748853 9.133e-08 au
i 3.52837038461188 3.7523e-06 deg
node 211.8548209988623 0.00010774 deg
peri 179.6986359033252 0.00010898 deg
M 167.4494341830798 1.8319e-05 deg
tp 2458537.439737471182
(2019-Feb-22.93973747)
7.0258e-05 TDB
period 1425.515085643058
3.90
1.092e-05
2.99e-08
d
yr
n .2525402948209432 1.9345e-09 deg/d
Q 3.099737079572042 1.583e-08 au
  Orbit Determination Parameters
   # obs. used (total)      718  
   data-arc span      12200 days (33.40 yr)  
   first obs. used      1987-09-29  
   last obs. used      2021-02-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5522  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:42  

Additional Information
 Earth MOID = .862606 au 
 Jupiter MOID = 2.34401 au 
 T_jup = 3.433 
[ 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 15.64   n/a E2021B55  

181706 (1991 UY3)          Discovered 1991-Oct-31 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1991 UY3 = 1987 SX4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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