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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03797203598428489 3.8282e-08  
a 2.706254731308433 1.1985e-08 au
q 2.603492729268548 1.0253e-07 au
i 7.82150324892528 4.4585e-06 deg
node 32.90218567042437 2.6464e-05 deg
peri 24.95561227068519 5.7757e-05 deg
M 246.3077606554186 5.1208e-05 deg
tp 2459714.046479342307
(2022-May-14.54647934)
0.0002316 TDB
period 1626.115675344394
4.45
1.0803e-05
2.958e-08
d
yr
n .2213864643570058 1.4707e-09 deg/d
Q 2.809016733348318 1.2441e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2211  
   data-arc span      16614 days (45.49 yr)  
   first obs. used      1975-04-15  
   last obs. used      2020-10-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43971  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:18:01  

Additional Information
 Earth MOID = 1.61517 au 
 Jupiter MOID = 2.31773 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 12.77   n/a E2021B10  
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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