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181516 (2006 UW78)
Classification: Main-belt Asteroid          SPK-ID: 2181516
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1045405666724572 8.7788e-08  
a 2.801942093397285 2.238e-08 au
q 2.509025479170122 2.4439e-07 au
i 2.898751172562116 9.6067e-06 deg
node 337.4118349137599 0.00013612 deg
peri 42.93569067400617 0.00014449 deg
M 15.892360557728 4.126e-05 deg
tp 2459124.873662390920
(2020-Oct-02.37366239)
0.0001964 TDB
period 1713.117534703167
4.69
2.0524e-05
5.619e-08
d
yr
n .2101431995805107 2.5177e-09 deg/d
Q 3.094858707624448 2.4719e-08 au
  Orbit Determination Parameters
   # obs. used (total)      183  
   data-arc span      7909 days (21.65 yr)  
   first obs. used      1999-03-22  
   last obs. used      2020-11-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:30:55  

Additional Information
 Earth MOID = 1.51088 au 
 Jupiter MOID = 2.3724 au 
 T_jup = 3.315 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457330.5 (2015-Nov-04.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1076132817461556 8.9063e-08  
q 2.500680148485112 2.4927e-07 au
tp 2457406.500061504549
(2016-Jan-19.00006150)
0.00018686 TDB
node 337.7098805806758 0.00013593 deg
peri 41.79914583086165 0.0001435 deg
i 2.900607825871167 9.6239e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      183  
   data-arc span      7909 days (21.65 yr)  
   first obs. used      1999-03-22  
   last obs. used      2020-11-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:30:55  

Additional Information
 Jupiter MOID = 2.3724 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.932227537248867E-15 -2.213021849856381E-14 -7.361652050782303E-12 8.142386157193006E-14 -1.865765963876223E-12 -6.443280683087646E-15
q -2.213021849856381E-14 6.21338044934713E-14 2.017020400930805E-11 -2.207575307261003E-13 5.108143656990462E-12 1.924719932039886E-14
tp -7.361652050782303E-12 2.017020400930805E-11 3.491615124557368E-8 -1.786503038028479E-10 8.644911755656799E-9 5.785741296470122E-13
node 8.142386157193006E-14 -2.207575307261003E-13 -1.786503038028479E-10 1.847586865948249E-8 -1.849490568458142E-8 6.357346038331016E-10
peri -1.865765963876223E-12 5.108143656990462E-12 8.644911755656799E-9 -1.849490568458142E-8 2.05918486841183E-8 -6.348798552561092E-10
i -6.443280683087646E-15 1.924719932039886E-14 5.785741296470122E-13 6.357346038331016E-10 -6.348798552561092E-10 9.261924764458337E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO440018  

181516 (2006 UW78)          Discovered 2006-Oct-17 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2006 UW78 = 2001 SW308 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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