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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1736179110066343 2.9674e-08  
a 2.233840379771917 6.4589e-09 au
q 1.84600567951365 6.696e-08 au
i 3.015435245770063 3.4224e-06 deg
node 150.0817993060336 6.0992e-05 deg
peri 82.35496988563415 6.1733e-05 deg
M 60.88632437539116 9.927e-06 deg
tp 2458394.250032443867
(2018-Oct-02.75003244)
3.3285e-05 TDB
period 1219.485476942636
3.34
5.289e-06
1.448e-08
d
yr
n .2952064676510568 1.2803e-09 deg/d
Q 2.621675080030184 7.5803e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1483  
   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      .49998  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 06:49:14  

Additional Information
 Earth MOID = .838152 au 
 Jupiter MOID = 2.37325 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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