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3587 Descartes (1981 RK5)
Classification: Main-belt Asteroid          SPK-ID: 2003587
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03875055604541398 3.9044e-08  
a 2.704600058618551 1.2001e-08 au
q 2.599795302466623 1.044e-07 au
i 7.824825955390144 4.5677e-06 deg
node 32.96671684557258 2.6727e-05 deg
peri 25.10464281515767 5.8255e-05 deg
M 201.8465760783871 5.1316e-05 deg
tp 2459714.222033731634
(2022-May-14.72203373)
0.00023179 TDB
period 1624.62453086528
4.45
1.0814e-05
2.961e-08
d
yr
n .2215896615867685 1.4749e-09 deg/d
Q 2.809404814770479 1.2466e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2109  
   data-arc span      16450 days (45.04 yr)  
   first obs. used      1975-04-15  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44723  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:56:23  

Additional Information
 Earth MOID = 1.61247 au 
 Jupiter MOID = 2.32128 au 
 T_jup = 3.351 
[ 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 12.7   n/a MPO344328  
diameter diameter 14.594 km 0.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

3587 Descartes (1981 RK5)          Discovered 1981-Sep-08 by Zhuravleva, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 RK5 = 1975 GE1 = 1983 AR2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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