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266787 (2009 SJ260)
Classification: Main-belt Asteroid          SPK-ID: 2266787
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1149725467897395 5.9471e-08  
a 2.697896657810788 1.9878e-08 au
q 2.387712608086755 1.6267e-07 au
i 7.712797411996703 6.7005e-06 deg
node 19.36129771200787 3.7245e-05 deg
peri 7.194250787348412 4.3614e-05 deg
M 213.6247860718476 2.345e-05 deg
tp 2460054.614461408935
(2023-Apr-20.11446141)
0.00010757 TDB
period 1618.588282463642
4.43
1.7889e-05
4.898e-08
d
yr
n .2224160423625745 2.4581e-09 deg/d
Q 3.008080707534821 2.2163e-08 au
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      7086 days (19.40 yr)  
   first obs. used      2001-12-19  
   last obs. used      2021-05-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61104  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 04:46:07  

Additional Information
 Earth MOID = 1.39123 au 
 Jupiter MOID = 2.45079 au 
 T_jup = 3.346 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457674.5 (2016-Oct-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1135292197147407 5.9336e-08  
q 2.393333994002153 1.6199e-07 au
tp 2458436.508930424221
(2018-Nov-14.00893042)
0.00010477 TDB
node 19.38132219585583 3.7236e-05 deg
peri 7.304811918050587 4.3794e-05 deg
i 7.712229971460534 6.6995e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      7086 days (19.40 yr)  
   first obs. used      2001-12-19  
   last obs. used      2021-05-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61104  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 04:46:07  

Additional Information
 Jupiter MOID = 2.45079 au 
 T_jup = 3.346 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.520818639394698E-15 -9.555278971037526E-15 -1.639766281301273E-12 1.954639240504448E-14 -3.924604413133282E-13 -2.572193716189815E-16
q -9.555278971037526E-15 2.624234589206725E-14 4.691800300202771E-12 -5.480285219290706E-14 1.081304952343992E-12 1.385258593500754E-15
tp -1.639766281301273E-12 4.691800300202771E-12 1.097674754346956E-8 -3.103496727680946E-11 2.428645673451039E-9 -2.467351722182437E-13
node 1.954639240504448E-14 -5.480285219290706E-14 -3.103496727680946E-11 1.386505975675546E-9 -1.379864095850057E-9 -3.935857239299917E-11
peri -3.924604413133282E-13 1.081304952343992E-12 2.428645673451039E-9 -1.379864095850057E-9 1.917934446609272E-9 3.893294477635936E-11
i -2.572193716189815E-16 1.385258593500754E-15 -2.467351722182437E-13 -3.935857239299917E-11 3.893294477635936E-11 4.488344140422784E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.13   n/a E2021B55  

266787 (2009 SJ260)          Discovered 2009-Sep-22 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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