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101081 (1998 RU25)
Classification: Main-belt Asteroid          SPK-ID: 2101081
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1865187878083144 8.0845e-08  
a 2.284650296903868 9.3685e-09 au
q 1.858520092959453 1.8023e-07 au
i 5.225548705152936 4.2834e-06 deg
node 146.6307588067254 7.2555e-05 deg
peri 195.1979324786828 7.484e-05 deg
M 105.883591784881 2.1471e-05 deg
tp 2458629.516843949452
(2019-May-26.01684395)
7.3823e-05 TDB
period 1261.327972794243
3.45
7.7584e-06
2.124e-08
d
yr
n .2854134751348497 1.7556e-09 deg/d
Q 2.710780500848283 1.1116e-08 au
  Orbit Determination Parameters
   # obs. used (total)      420  
   data-arc span      7833 days (21.45 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5447  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:15:25  

Additional Information
 Earth MOID = .850677 au 
 Jupiter MOID = 2.68455 au 
 T_jup = 3.574 
[ 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 16.6   n/a MPO502724  

101081 (1998 RU25)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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