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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1764503986345515 1.289e-07  
a 2.714048857185233 5.2019e-08 AU
q 2.23515385442125 3.3317e-07 AU
i 3.965583726103012 1.1194e-05 deg
node 322.3795226937212 0.00012537 deg
peri 48.58688404859421 0.00012985 deg
M 248.0959508100583 3.5212e-05 deg
tp 2457308.154475989370
(2015-Oct-12.65447599)
0.00016876 JED
period 1633.145651825081
4.47
4.6953e-05
1.286e-07
d
yr
n .2204334926267544 6.3375e-09 deg/d
Q 3.192943859949216 6.1198e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      259  
   data-arc span      5687 days (15.57 yr)  
   first obs. used      1997-09-08  
   last obs. used      2013-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60105  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-07 06:39:37  

Additional Information
 Earth MOID = 1.23579 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 15.4 mag n/a MPO260080  

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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