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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1536984053698848 4.0669e-08  
a 3.183186427227138 2.2276e-08 au
q 2.693935749367266 1.3179e-07 au
i 17.54400356557059 6.5668e-06 deg
node 7.815605700626007 1.4562e-05 deg
peri 277.8963967615632 2.5695e-05 deg
M 14.90304449140269 2.1311e-05 deg
tp 2458514.625536736293
(2019-Jan-31.12553674)
0.00012272 TDB
period 2074.395388993747
5.68
2.1775e-05
5.962e-08
d
yr
n .1735445431040172 1.8217e-09 deg/d
Q 3.672437105087011 2.57e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1763  
   data-arc span      10228 days (28.00 yr)  
   first obs. used      1991-09-02  
   last obs. used      2019-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45736  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:16:27  

Additional Information
 Earth MOID = 1.74904 au 
 Jupiter MOID = 1.81346 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 12.0   n/a MPO400142  
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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