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9747 (1989 AT)
Classification: Main-belt Asteroid          SPK-ID: 2009747
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1232058598700102 3.2403e-08  
a 3.026504806529807 1.6665e-08 au
q 2.653621679440583 1.031e-07 au
i 13.26663601574096 3.5981e-06 deg
node 99.86563098962573 1.9037e-05 deg
peri 356.3997147424449 2.8e-05 deg
M 350.4056444711471 2.0231e-05 deg
tp 2459051.753530433055
(2020-Jul-21.25353043)
0.00010822 TDB
period 1923.138130582272
5.27
1.5884e-05
4.349e-08
d
yr
n .1871940420062298 1.5461e-09 deg/d
Q 3.399387933619031 1.8718e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1782  
   data-arc span      11353 days (31.08 yr)  
   first obs. used      1989-01-04  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47795  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:27:00  

Additional Information
 Earth MOID = 1.67059 au 
 Jupiter MOID = 1.78174 au 
 T_jup = 3.193 
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Orbital Elements at Epoch 2457038.5 (2015-Jan-16.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1208405257194932 3.2287e-08  
q 2.660475490277171 1.0233e-07 au
tp 2457133.136438300272
(2015-Apr-20.63643830)
0.00010655 TDB
node 100.0031626507697 1.9027e-05 deg
peri 357.1353512044262 2.8289e-05 deg
i 13.26915114983539 3.5973e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1782  
   data-arc span      11353 days (31.08 yr)  
   first obs. used      1989-01-04  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47795  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 19:27:00  

Additional Information
 Jupiter MOID = 1.78174 au 
 T_jup = 3.193 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.042435921291696E-15 -3.272423601038118E-15 -9.320158465343585E-13 -9.635053617963692E-15 -1.776191437552894E-13 -1.598585074097844E-15
q -3.272423601038118E-15 1.047115865469308E-14 3.059585276198664E-12 3.193313358072759E-14 5.810548156609061E-13 5.573057679450573E-15
tp -9.320158465343585E-13 3.059585276198664E-12 1.135255390350752E-8 4.604423558550717E-11 2.261530852818508E-9 -2.087012427288422E-12
node -9.635053617963692E-15 3.193313358072759E-14 4.604423558550717E-11 3.620094541445047E-10 -3.425836769782434E-10 -1.230588291793672E-11
peri -1.776191437552894E-13 5.810548156609061E-13 2.261530852818508E-9 -3.425836769782434E-10 8.002724123127204E-10 1.15567630396199E-11
i -1.598585074097844E-15 5.573057679450573E-15 -2.087012427288422E-12 -1.230588291793672E-11 1.15567630396199E-11 1.294063227026227E-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 13.1   n/a MPO502243  
diameter diameter 9.193 km 0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.140   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

9747 (1989 AT)          Discovered 1989-Jan-04 by Ueda, S., Kaneda, H. at Kushiro
Reference: 19981208/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1989 AT = 1994 AA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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