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13968 (1991 RE7)
Classification: Main-belt Asteroid          SPK-ID: 2013968
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1533146475318089 3.3456e-08  
a 3.183733718333534 1.8641e-08 au
q 2.695620705472093 1.0237e-07 au
i 17.54172452938979 4.3396e-06 deg
node 7.808330801197846 1.0917e-05 deg
peri 278.043319096869 1.8138e-05 deg
M 118.9271941121449 1.577e-05 deg
tp 2458515.039861869978
(2019-Jan-31.53986187)
8.9383e-05 TDB
period 2074.930393919116
5.68
1.8223e-05
4.989e-08
d
yr
n .1734997959714852 1.5237e-09 deg/d
Q 3.671846731194976 2.1498e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2546  
   data-arc span      10779 days (29.51 yr)  
   first obs. used      1991-09-02  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40854  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:14:16  

Additional Information
 Earth MOID = 1.74944 au 
 Jupiter MOID = 1.81236 au 
 T_jup = 3.108 
[ 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 12.1   n/a MPO502275  
diameter diameter 18.386 km 0.198 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.100   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13968 (1991 RE7)          Discovered 1991-Sep-02 by McNaught, R. H. at Siding Spring
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RE7 = 1995 FJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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