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13938 (1989 RP1)
Classification: Main-belt Asteroid          SPK-ID: 2013938
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2315693825252543 3.5914e-08  
a 2.651219982894058 1.0207e-08 au
q 2.037278608516666 9.6958e-08 au
i 12.96166858889877 4.4584e-06 deg
node 162.5073572096335 1.4984e-05 deg
peri 155.2255923093469 1.7368e-05 deg
M 64.01485693511563 7.4112e-06 deg
tp 2458720.121084192100
(2019-Aug-24.62108419)
3.254e-05 TDB
period 1576.765371719121
4.32
9.1056e-06
2.493e-08
d
yr
n .2283155163456552 1.3185e-09 deg/d
Q 3.265161357271451 1.2571e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1749  
   data-arc span      15810 days (43.29 yr)  
   first obs. used      1976-09-25  
   last obs. used      2020-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47813  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:47:58  

Additional Information
 Earth MOID = 1.03221 au 
 Jupiter MOID = 2.12651 au 
 T_jup = 3.316 
[ 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 13.6   n/a MPO439190  
diameter diameter 7.872 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.132   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13938 (1989 RP1)          Discovered 1989-Sep-05 by Helin, E. F. at Palomar
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 RP1 = 1976 SS6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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