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180781 (2004 RU54)
Classification: Main-belt Asteroid          SPK-ID: 2180781
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2215771701757345 3.018e-08  
a 3.03761550343767 1.8875e-08 au
q 2.364549256104012 8.9555e-08 au
i 6.823133405526445 5.2612e-06 deg
node 215.042203475253 3.195e-05 deg
peri 66.08910251952432 3.5764e-05 deg
M 68.81399002652333 1.3099e-05 deg
tp 2458830.866038057995
(2019-Dec-13.36603806)
7.0102e-05 TDB
period 1933.737983334968
5.29
1.8023e-05
4.934e-08
d
yr
n .1861679312825701 1.7352e-09 deg/d
Q 3.710681750771328 2.3057e-08 au
  Orbit Determination Parameters
   # obs. used (total)      526  
   data-arc span      9581 days (26.23 yr)  
   first obs. used      1994-10-13  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51277  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:27:56  

Additional Information
 Earth MOID = 1.35663 au 
 Jupiter MOID = 1.49082 au 
 T_jup = 3.193 
[ show covariance matrix ]

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 15.56   n/a E2021B55  

180781 (2004 RU54)          Discovered 2004-Sep-08 by LINEAR at Socorro
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2004 RU54 = 2003 HZ28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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