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266726 (2009 RM31)
Classification: Main-belt Asteroid          SPK-ID: 2266726
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1456433509581384 7.0286e-08  
a 3.049456922058626 3.7617e-08 au
q 2.605323797327517 2.2777e-07 au
i 2.217825699669599 7.1705e-06 deg
node 297.1586613895547 0.00015145 deg
peri 13.49543891925836 0.00015319 deg
M 51.90456829623704 1.9596e-05 deg
tp 2458720.063031734233
(2019-Aug-24.56303173)
0.00010686 TDB
period 1945.056319503099
5.33
3.599e-05
9.854e-08
d
yr
n .1850846149750402 3.4247e-09 deg/d
Q 3.493590046789735 4.3095e-08 au
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      7675 days (21.01 yr)  
   first obs. used      1998-08-23  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56721  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 04:06:14  

Additional Information
 Earth MOID = 1.59097 au 
 Jupiter MOID = 1.76747 au 
 T_jup = 3.220 
[ 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 16.0   n/a MPO440311  

266726 (2009 RM31)          Discovered 2009-Sep-14 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2009 RM31 = 2005 YD176 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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