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266720 (2009 RJ)
Classification: Main-belt Asteroid          SPK-ID: 2266720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1754974050680775 6.731e-08  
a 2.402782027893198 1.8513e-08 au
q 1.981100017053728 1.6665e-07 au
i 2.108246727832586 7.1799e-06 deg
node 317.3995723019462 0.00016546 deg
peri 14.98020868032392 0.00016628 deg
M 12.78655076753438 1.8498e-05 deg
tp 2459152.180670885685
(2020-Oct-29.68067089)
6.9744e-05 TDB
period 1360.410543656546
3.72
1.5722e-05
4.304e-08
d
yr
n .2646259996136041 3.0583e-09 deg/d
Q 2.824464038732667 2.1761e-08 au
  Orbit Determination Parameters
   # obs. used (total)      216  
   data-arc span      7969 days (21.82 yr)  
   first obs. used      1998-09-26  
   last obs. used      2020-07-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56894  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:23:50  

Additional Information
 Earth MOID = .968789 au 
 Jupiter MOID = 2.52991 au 
 T_jup = 3.503 
[ 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 17.19   n/a E2021B55  

266720 (2009 RJ)          Discovered 2009-Sep-09 by La Sagra at La Sagra
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ 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
2082-Nov-18 16:33 00:01 Amphi 0.0170469780023237 0.0170339242630048 0.0170600449282034 3.7050485825526 3.70504849153367 2481817.189715799 1.0273812442882 993.301638979429 58.8748502993047 -49.1735978828194 32798.3368589788 T 13 CATAB v2.0f-lin.ifort 2020-Nov-11 22:23:51 2020-Nov-11 22:23

Alternate Designations
 2009 RJ = 1998 SX150 = 2000 BR48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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