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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2982354855508332 5.1537e-08  
a 2.751138436598545 1.3615e-08 au
q 1.930651329142018 1.4379e-07 au
i 12.20037635258775 5.146e-06 deg
node 55.84939709577039 2.2849e-05 deg
peri 323.365180784164 2.3917e-05 deg
M 128.1807257340141 6.7948e-06 deg
tp 2458407.045647965394
(2018-Oct-15.54564797)
3.0329e-05 TDB
period 1666.737066037423
4.56
1.2372e-05
3.387e-08
d
yr
n .2159908766269178 1.6033e-09 deg/d
Q 3.571625544055073 1.7675e-08 au
  Orbit Determination Parameters
   # obs. used (total)      820  
   data-arc span      8962 days (24.54 yr)  
   first obs. used      1995-10-16  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46557  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:57:42  

Additional Information
 Earth MOID = .948984 au 
 Jupiter MOID = 1.92859 au 
 T_jup = 3.248 
[ 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 15.0   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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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