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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09485360423196819 5.118e-08  
a 3.248701109908714 3.6685e-08 au
q 2.940550100561477 1.7817e-07 au
i 5.934449341923584 5.2934e-06 deg
node 89.05733974061356 7.0532e-05 deg
peri 348.4687198177854 8.2995e-05 deg
M 284.3211649510578 4.3709e-05 deg
tp 2459650.109003541706
(2022-Mar-11.60900354)
0.00026208 TDB
period 2138.764968704108
5.86
3.6227e-05
9.918e-08
d
yr
n .1683214403021227 2.8511e-09 deg/d
Q 3.556852119255951 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54863  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:17:06  

Additional Information
 Earth MOID = 1.95591 au 
 Jupiter MOID = 1.66784 au 
 T_jup = 3.166 
[ 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 16.16   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

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