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136824 Nonamikeiko (1997 RJ5)
Classification: Main-belt Asteroid          SPK-ID: 2136824
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1761843128798249 7.9164e-08  
a 2.71403776548788 1.8533e-08 au
q 2.235866886645502 2.1613e-07 au
i 3.965482896953341 7.1203e-06 deg
node 322.3740684227249 9.5764e-05 deg
peri 48.51159939376232 9.8133e-05 deg
M 20.39679936577824 1.7016e-05 deg
tp 2457307.970166682625
(2015-Oct-12.47016668)
7.7206e-05 JED
period 1633.135640395802
4.47
1.6728e-05
4.58e-08
d
yr
n .2204348439256101 2.2579e-09 deg/d
Q 3.192208644330258 2.1798e-08 au
  Orbit Determination Parameters
   # obs. used (total)      441  
   data-arc span      6673 days (18.27 yr)  
   first obs. used      1997-09-08  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52404  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 17:43:51  

Additional Information
 Earth MOID = 1.23608 au 
 Jupiter MOID = 2.2828 au 
 T_jup = 3.336 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5 mag n/a MPO299759  

136824 Nonamikeiko           Discovered 1997 Sept. 8 by H. Abe at Yatsuka.
Keiko Nonami (b.1960) is a member of Matsue Astronomy Club. She popularizes astronomy in Shimane prefecture and is an observing partner of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20111210/MPCPages.arcLast Updated: 2011-12-12

Alternate Designations
 1997 RJ5 = 2002 XS41 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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