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266754 (2009 SA77)
Classification: Outer Main-belt Asteroid          SPK-ID: 2266754
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09485360355972441 5.118e-08  
a 3.248701113057282 3.6685e-08 au
q 2.940550105595312 1.7817e-07 au
i 5.934449319810987 5.2934e-06 deg
node 89.05733985141298 7.0532e-05 deg
peri 348.4687201952244 8.2995e-05 deg
M 284.3211642905102 4.3709e-05 deg
tp 2459650.109008119655
(2022-Mar-11.60900812)
0.00026208 TDB
period 2138.764971813373
5.86
3.6227e-05
9.918e-08
d
yr
n .1683214400574227 2.8511e-09 deg/d
Q 3.556852120519253 4.0165e-08 au
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      6204 days (16.99 yr)  
   first obs. used      2003-10-22  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54855  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:23:40  

Additional Information
 Earth MOID = 1.95591 au 
 Jupiter MOID = 1.66784 au 
 T_jup = 3.166 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09391072800999743 4.8981e-08  
q 2.945568365013453 1.7114e-07 au
tp 2457473.597308859292
(2016-Mar-26.09730886)
0.00025562 TDB
node 89.22037914493379 7.085e-05 deg
peri 343.1583362028067 8.3659e-05 deg
i 5.923785456130204 5.2593e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      6204 days (16.99 yr)  
   first obs. used      2003-10-22  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54855  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:23:40  

Additional Information
 Jupiter MOID = 1.66784 au 
 T_jup = 3.166 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.399148920980141E-15 -8.229807903081857E-15 4.784985347572572E-13 5.052136164355045E-15 1.782136321266348E-13 -3.974870847710372E-16
q -8.229807903081857E-15 2.929033035853333E-14 1.070078554691574E-12 -2.123113555327008E-14 -1.365521898415924E-13 3.495578523022876E-15
tp 4.784985347572572E-13 1.070078554691574E-12 6.534147259426694E-8 -4.892499780598562E-11 1.146000054942495E-8 1.551207868982226E-11
node 5.052136164355045E-15 -2.123113555327008E-14 -4.892499780598562E-11 5.01968773104632E-9 -5.001897948115296E-9 9.005600746784265E-11
peri 1.782136321266348E-13 -1.365521898415924E-13 1.146000054942495E-8 -5.001897948115296E-9 6.998885698724367E-9 -8.695517483456591E-11
i -3.974870847710372E-16 3.495578523022876E-15 1.551207868982226E-11 9.005600746784265E-11 -8.695517483456591E-11 2.766043692585175E-11

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 16.16   n/a E2021B55  
diameter diameter 3.236 km 0.376 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

266754 (2009 SA77)          Discovered 2009-Sep-17 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

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Alternate Designations
 2009 SA77 = 2003 UC387 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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