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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1534546417172246 3.5282e-08  
a 3.182983231164723 1.9166e-08 au
q 2.694539679834407 1.0968e-07 au
i 17.54356387875684 5.4311e-06 deg
node 7.812538137129696 1.1637e-05 deg
peri 277.9579782972447 2.0368e-05 deg
M 84.29629308081026 1.7091e-05 deg
tp 2458514.813615246945
(2019-Jan-31.31361525)
9.7938e-05 TDB
period 2074.196766202796
5.68
1.8734e-05
5.129e-08
d
yr
n .1735611615377489 1.5676e-09 deg/d
Q 3.67142678249504 2.2107e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2256  
   data-arc span      10649 days (29.16 yr)  
   first obs. used      1991-09-02  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42386  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:42:58  

Additional Information
 Earth MOID = 1.75019 au 
 Jupiter MOID = 1.81349 au 
 T_jup = 3.109 
[ 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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