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JPL Small-Body Database Browser
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87564 (2000 RQ9)
Classification: Main-belt Asteroid          SPK-ID: 2087564
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .298235469957308 5.2371e-08  
a 2.751138439854011 1.3915e-08 au
q 1.930651374326535 1.4642e-07 au
i 12.20036565376714 5.4623e-06 deg
node 55.84940463594711 2.2866e-05 deg
peri 323.3651634968872 2.4069e-05 deg
M 128.1807300525632 6.8628e-06 deg
tp 2458407.045626917900
(2018-Oct-15.54562692)
3.0805e-05 TDB
period 1666.737068995838
4.56
1.2646e-05
3.462e-08
d
yr
n .2159908762435397 1.6387e-09 deg/d
Q 3.571625505381487 1.8066e-08 au
  Orbit Determination Parameters
   # obs. used (total)      775  
   data-arc span      8540 days (23.38 yr)  
   first obs. used      1995-10-16  
   last obs. used      2019-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47588  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:26:41  

Additional Information
 Earth MOID = .948984 au 
 Jupiter MOID = 1.92859 au 
 T_jup = 3.248 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456897.5 (2014-Aug-28.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2942788150466541 5.19e-08  
q 1.944191784160022 1.4444e-07 au
tp 2456735.072423587999
(2014-Mar-18.57242359)
3.3044e-05 TDB
node 56.1697751097435 2.294e-05 deg
peri 322.7464263414313 2.4235e-05 deg
i 12.16787039552051 5.4462e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      775  
   data-arc span      8540 days (23.38 yr)  
   first obs. used      1995-10-16  
   last obs. used      2019-03-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47588  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:26:41  

Additional Information
 Jupiter MOID = 1.92859 au 
 T_jup = 3.248 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.693603409838207E-15 -7.479753755781388E-15 3.806766270874792E-14 -2.176306570414042E-14 -5.783797774502782E-14 -7.921738575837336E-15
q -7.479753755781388E-15 2.086330198078733E-14 -1.846919590121893E-13 6.106597102459449E-14 1.45040925957023E-13 2.251340043930163E-14
tp 3.806766270874792E-14 -1.846919590121893E-13 1.091896747032245E-9 2.627008508863855E-12 2.784459991415119E-10 -1.781840677199948E-12
node -2.176306570414042E-14 6.106597102459449E-14 2.627008508863855E-12 5.262311159309567E-10 -5.124685823165996E-10 -2.274659871417773E-11
peri -5.783797774502782E-14 1.45040925957023E-13 2.784459991415119E-10 -5.124685823165996E-10 5.873150170438717E-10 2.203254615792214E-11
i -7.921738575837336E-15 2.251340043930163E-14 -1.781840677199948E-12 -2.274659871417773E-11 2.203254615792214E-11 2.966104027113757E-11

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 15.0   n/a MPO468850  
diameter diameter 2.284 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.407   0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

87564 (2000 RQ9)          Discovered 2000-Sep-01 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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