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JPL Small-Body Database Browser
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136963 (1998 RR31)
Classification: Main-belt Asteroid          SPK-ID: 2136963
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1230172390442338 4.4356e-08  
a 2.443448562624735 1.2604e-08 au
q 2.142862266704039 1.1209e-07 au
i 5.669520261208969 4.8275e-06 deg
node 230.2296071827422 4.408e-05 deg
peri 159.5437734631236 4.8464e-05 deg
M 214.3351364678052 2.315e-05 deg
tp 2459564.989065780475
(2021-Dec-16.48906578)
9.2563e-05 TDB
period 1395.093221201256
3.82
1.0794e-05
2.955e-08
d
yr
n .2580472720597261 1.9966e-09 deg/d
Q 2.744034858545432 1.4155e-08 au
  Orbit Determination Parameters
   # obs. used (total)      580  
   data-arc span      7908 days (21.65 yr)  
   first obs. used      1998-08-30  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56435  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 22:42:08  

Additional Information
 Earth MOID = 1.14944 au 
 Jupiter MOID = 2.67773 au 
 T_jup = 3.483 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO432831  

136963 (1998 RR31)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 1998 RR31 = 2001 KM2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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