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109785 (2001 RY87)
Classification: Main-belt Asteroid          SPK-ID: 2109785
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1966935598549563 4.6172e-08  
a 2.668631182858389 1.1957e-08 au
q 2.14372861556203 1.2484e-07 au
i .9146839460433134 5.0984e-06 deg
node 151.9168500605998 0.00026276 deg
peri 207.4848654371602 0.00026301 deg
M 107.1474856769149 1.1315e-05 deg
tp 2458526.573770877151
(2019-Feb-12.07377088)
4.8625e-05 TDB
period 1592.32334203979
4.36
1.0702e-05
2.93e-08
d
yr
n .2260847344854184 1.5195e-09 deg/d
Q 3.193533750154748 1.4309e-08 au
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      14765 days (40.42 yr)  
   first obs. used      1979-08-22  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55622  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:33:00  

Additional Information
 Earth MOID = 1.14032 au 
 Jupiter MOID = 2.25814 au 
 T_jup = 3.354 
[ 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 15.6   n/a MPO453559  

109785 (2001 RY87)          Discovered 2001-Sep-11 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2001 RY87 = 1979 QS2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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