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56318 (1999 UR3)
Classification: Inner Main-belt Asteroid          SPK-ID: 2056318
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0691908339863278 5.0516e-08  
a 1.868997645272655 7.6053e-09 au
q 1.739680139477757 9.4734e-08 au
i 26.89029675747399 6.9342e-06 deg
node 89.21542913410795 1.2622e-05 deg
peri 22.79459349009483 6.8931e-05 deg
M 309.4016330786791 6.4479e-05 deg
tp 2459131.673334138936
(2020-Oct-09.17333414)
0.0001671 TDB
period 933.279138503552
2.56
5.6965e-06
1.56e-08
d
yr
n .3857366838577737 2.3544e-09 deg/d
Q 1.998315151067553 8.1315e-09 au
  Orbit Determination Parameters
   # obs. used (total)      809  
   data-arc span      10104 days (27.66 yr)  
   first obs. used      1991-09-06  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47987  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:09:18  

Additional Information
 Earth MOID = .763524 au 
 Jupiter MOID = 3.20512 au 
 T_jup = 3.851 
[ 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 15.5   n/a MPO474445  
rotation period rot_per 3.541 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2013) Minor Planet Bull. 40, 137-145.]

56318 (1999 UR3)          Discovered 1999-Oct-20 by Kranz, T., Wolf, C. at La Silla
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 UR3 = 2001 MU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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