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74656 (1999 RR87)
Classification: Main-belt Asteroid          SPK-ID: 2074656
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1733842412786452 2.9661e-08  
a 2.233996159942743 6.4105e-09 au
q 1.846656430731663 6.6891e-08 au
i 3.015358794911572 3.4217e-06 deg
node 150.0775811718236 6.0977e-05 deg
peri 82.35848078520851 6.172e-05 deg
M 178.9850607921817 1.015e-05 deg
tp 2458394.131903712042
(2018-Oct-02.63190371)
3.333e-05 TDB
period 1219.613043108232
3.34
5.2496e-06
1.437e-08
d
yr
n .2951755903516132 1.2705e-09 deg/d
Q 2.621335889153822 7.522e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1487  
   data-arc span      7962 days (21.80 yr)  
   first obs. used      1998-02-06  
   last obs. used      2019-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50006  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:26:55  

Additional Information
 Earth MOID = .838819 au 
 Jupiter MOID = 2.37309 au 
 T_jup = 3.618 
[ 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 15.1   n/a MPO337820  

74656 (1999 RR87)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RR87 = 1998 CK4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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