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183898 (2004 CU81)
Classification: Main-belt Asteroid          SPK-ID: 2183898
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1440846568412963 5.3516e-08  
a 2.592526333411096 1.7854e-08 au
q 2.218983066309534 1.4533e-07 au
i 3.466624834811655 4.8788e-06 deg
node 127.4112366386946 0.00011125 deg
peri 344.9771819792542 0.00011357 deg
M 350.65372252893 2.5006e-05 deg
tp 2459040.083971098847
(2020-Jul-09.58397110)
0.00010609 TDB
period 1524.695756111913
4.17
1.575e-05
4.312e-08
d
yr
n .2361126792390546 2.4391e-09 deg/d
Q 2.966069600512658 2.0426e-08 au
  Orbit Determination Parameters
   # obs. used (total)      209  
   data-arc span      9220 days (25.24 yr)  
   first obs. used      1994-10-29  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6187  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 19:43:16  

Additional Information
 Earth MOID = 1.23575 au 
 Jupiter MOID = 2.13363 au 
 T_jup = 3.401 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457321.5 (2015-Oct-26.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1426768217853993 5.3451e-08  
q 2.22259821006387 1.4491e-07 au
tp 2457516.837957220630
(2016-May-08.33795722)
0.00010136 TDB
node 127.469165015013 0.00011121 deg
peri 345.2657504524406 0.00011358 deg
i 3.466636672496148 4.8787e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      209  
   data-arc span      9220 days (25.24 yr)  
   first obs. used      1994-10-29  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6187  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 19:43:16  

Additional Information
 Jupiter MOID = 2.13363 au 
 T_jup = 3.401 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.856970748306064E-15 -7.708832563670522E-15 -1.953141766155049E-12 -3.354475685553776E-14 -3.297605102930484E-13 -3.099494991985293E-15
q -7.708832563670522E-15 2.09996292630985E-14 5.520774447514312E-12 9.347936457682014E-14 9.414254855989467E-13 8.783015388562081E-15
tp -1.953141766155049E-12 5.520774447514312E-12 1.027305058163317E-8 7.198375438285699E-11 2.392399516857002E-9 7.356133400936968E-12
node -3.354475685553776E-14 9.347936457682014E-14 7.198375438285699E-11 1.236803697229858E-8 -1.232881511436929E-8 -5.274993723207456E-11
peri -3.297605102930484E-13 9.414254855989467E-13 2.392399516857002E-9 -1.232881511436929E-8 1.290123894147088E-8 5.435004613371269E-11
i -3.099494991985293E-15 8.783015388562081E-15 7.356133400936968E-12 -5.274993723207456E-11 5.435004613371269E-11 2.380158950521197E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.9   n/a MPO417993  

183898 (2004 CU81)          Discovered 2004-Feb-12 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 2004 CU81 = 1996 HY6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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