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JPL Small-Body Database Browser
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160556 (1998 RR4)
Classification: Main-belt Asteroid          SPK-ID: 2160556
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2579159441954129 5.3651e-08  
a 2.723027801825326 1.8409e-08 au
q 2.020715515247187 1.4679e-07 au
i 17.28778775019483 6.054e-06 deg
node 162.0971744909336 1.9195e-05 deg
peri 230.319960121456 2.1911e-05 deg
M 189.1728843835239 1.0958e-05 deg
tp 2459379.308794913321
(2021-Jun-13.80879491)
5.3959e-05 TDB
period 1641.2568060814
4.49
1.6644e-05
4.557e-08
d
yr
n .2193441018285991 2.2244e-09 deg/d
Q 3.425340088403464 2.3157e-08 au
  Orbit Determination Parameters
   # obs. used (total)      360  
   data-arc span      7544 days (20.65 yr)  
   first obs. used      1998-09-14  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62476  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:33:16  

Additional Information
 Earth MOID = 1.0646 au 
 Jupiter MOID = 2.17167 au 
 T_jup = 3.246 
[ 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 15.6   n/a MPO436809  

160556 (1998 RR4)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

[ show close-approach data ]
Alternate Designations
 1998 RR4 = 2000 FY6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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