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295868 (2008 WK16)
Classification: Main-belt Asteroid          SPK-ID: 2295868
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06570976136051458 6.9667e-08  
a 2.853635776131012 3.2361e-08 au
q 2.666124050271617 2.091e-07 au
i 1.505573800580538 1.028e-05 deg
node 356.3089909982138 0.00026592 deg
peri 43.42543187898434 0.00028023 deg
M 143.4374997486152 8.7675e-05 deg
tp 2458298.953529126719
(2018-Jun-29.45352913)
0.0004246 TDB
period 1760.744086846225
4.82
2.9951e-05
8.2e-08
d
yr
n .2044590140551417 3.4779e-09 deg/d
Q 3.041147501990408 3.4487e-08 au
  Orbit Determination Parameters
   # obs. used (total)      113  
   data-arc span      7416 days (20.30 yr)  
   first obs. used      1998-09-19  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62122  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:36:56  

Additional Information
 Earth MOID = 1.67392 au 
 Jupiter MOID = 2.2361 au 
 T_jup = 3.301 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456867.5 (2014-Jul-29.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06365150637811638 6.8085e-08  
q 2.675262673775149 2.0338e-07 au
tp 2456544.167782198003
(2013-Sep-08.66778220)
0.0004341 TDB
node 356.362195664138 0.00026606 deg
peri 45.04356452807741 0.00028148 deg
i 1.505609251971979 1.0268e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      113  
   data-arc span      7416 days (20.30 yr)  
   first obs. used      1998-09-19  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62122  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:36:56  

Additional Information
 Jupiter MOID = 2.2361 au 
 T_jup = 3.301 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.635597000644923E-15 -1.370483272095798E-14 -1.28773861924983E-11 2.744643513324092E-14 -2.771522086926284E-12 -3.267545358488113E-15
q -1.370483272095798E-14 4.136227184496618E-14 3.978683328263364E-11 -8.390068924530389E-14 8.58490307838076E-12 9.871980226926038E-15
tp -1.28773861924983E-11 3.978683328263364E-11 1.884411760123332E-7 4.717333978601379E-11 3.993284189225404E-8 7.885493228531378E-12
node 2.744643513324092E-14 -8.390068924530389E-14 4.717333978601379E-11 7.078937527740669E-8 -7.075433392590317E-8 -8.346363142503242E-10
peri -2.771522086926284E-12 8.58490307838076E-12 3.993284189225404E-8 -7.075433392590317E-8 7.923298308533859E-8 8.360268672994259E-10
i -3.267545358488113E-15 9.871980226926038E-15 7.885493228531378E-12 -8.346363142503242E-10 8.360268672994259E-10 1.054253816641605E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO427597  

295868 (2008 WK16)          Discovered 2008-Nov-17 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

Alternate Designations
 2008 WK16 = 2003 UU415 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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