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JPL Small-Body Database Browser
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13969 (1991 RK26)
Classification: Main-belt Asteroid          SPK-ID: 2013969
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1946268509736252 4.3621e-08  
a 2.271826980597796 8.9129e-09 au
q 1.829668449407128 9.7898e-08 au
i 7.246442904479167 5.8443e-06 deg
node 20.70065951083477 3.2716e-05 deg
peri 297.3677391113072 3.5609e-05 deg
M 58.23983695755737 1.545e-05 deg
tp 2458398.161299669233
(2018-Oct-06.66129967)
5.3197e-05 TDB
period 1250.723489699331
3.42
7.3603e-06
2.015e-08
d
yr
n .2878334043974361 1.6938e-09 deg/d
Q 2.713985511788464 1.0648e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1055  
   data-arc span      9943 days (27.22 yr)  
   first obs. used      1991-09-11  
   last obs. used      2018-12-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52776  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:24:51  

Additional Information
 Earth MOID = .829895 au 
 Jupiter MOID = 2.61921 au 
 T_jup = 3.576 
[ 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 15.1   n/a MPO395139  
diameter diameter 2.779 km 0.674 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.363   0.144 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13969 (1991 RK26)          Discovered 1991-Sep-11 by Holt, H. E. at Palomar
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RK26 = 1997 GU18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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