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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1947869008239582 4.1406e-08  
a 2.271972417711265 8.7282e-09 au
q 1.829421951707772 9.2253e-08 au
i 7.245920643636482 4.69e-06 deg
node 20.68715167487252 3.2048e-05 deg
peri 297.4275207759769 3.4372e-05 deg
M 173.2931986862308 1.5056e-05 deg
tp 2458398.381423594461
(2018-Oct-06.88142359)
5.0489e-05 TDB
period 1250.843594262867
3.42
7.208e-06
1.973e-08
d
yr
n .2878057669649348 1.6585e-09 deg/d
Q 2.714522883714757 1.0428e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1198  
   data-arc span      10372 days (28.40 yr)  
   first obs. used      1991-09-11  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50425  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:48:30  

Additional Information
 Earth MOID = .83048 au 
 Jupiter MOID = 2.62141 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1910-Jan-15 20:34 00:02 Amphi 0.0274896281021754 0.027478820419208 0.0275004373166935 3.88672797514675 3.88672792134207 2418687.356810475 1.55986161164229 629.150509506279 52.3294328409979 31.220174429005 41091.3264386055 T 26 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:41 2020-Feb-22 20:48
2016-Mar-17 15:20 < 00:01 Amphi 0.0339298385532456 0.0339278911673868 0.0339317859429913 3.96239331300182 3.96239327024221 2457465.138977591 0.411497001235526 99.4398388321213 52.8545057908863 14.8659284829978 55116.0587426489 T 26 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:41 2020-Feb-22 20:48
2122-May-18 13:50 00:01 Amphi 0.038220824318986 0.0382053691101224 0.0382362796186854 4.03439426475008 4.03439422746847 2496242.076631823 1.20696476955445 776.014003019194 53.1554347714995 6.93529353340183 14897.1680753862 T 26 CATAB v2.0f-lin.ifort 2020-Feb-22 20:48:41 2020-Feb-22 20:48

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