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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1964421517142453 4.768e-08  
a 2.668187172361785 1.2086e-08 au
q 2.144042743046688 1.292e-07 au
i .9146346660168763 5.2074e-06 deg
node 151.923955030521 0.00026512 deg
peri 207.4636159957091 0.00026536 deg
M 16.74221222886797 1.1078e-05 deg
tp 2458526.465660385666
(2019-Feb-11.96566039)
4.8772e-05 TDB
period 1591.925959175499
4.36
1.0816e-05
2.961e-08
d
yr
n .2261411706524678 1.5365e-09 deg/d
Q 3.192331601676881 1.446e-08 au
  Orbit Determination Parameters
   # obs. used (total)      629  
   data-arc span      14236 days (38.98 yr)  
   first obs. used      1979-08-22  
   last obs. used      2018-08-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56597  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 10:02:12  

Additional Information
 Earth MOID = 1.13974 au 
 Jupiter MOID = 2.25569 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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