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46549 (1989 SA2)
Classification: Main-belt Asteroid          SPK-ID: 2046549
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1711759432119627 5.3729e-08  
a 2.703450412819537 1.9821e-08 au
q 2.240684738478383 1.4373e-07 au
i 6.399942688106481 6.1749e-06 deg
node 57.47764121641858 4.8672e-05 deg
peri 285.2938195674604 5.2417e-05 deg
M 345.5435763133618 2.4578e-05 deg
tp 2459065.698019903583
(2020-Aug-04.19801990)
0.00011133 TDB
period 1623.588770920147
4.45
1.7855e-05
4.888e-08
d
yr
n .2217310235497471 2.4385e-09 deg/d
Q 3.166216087160691 2.3213e-08 au
  Orbit Determination Parameters
   # obs. used (total)      610  
   data-arc span      10848 days (29.70 yr)  
   first obs. used      1989-09-26  
   last obs. used      2019-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56377  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:30:21  

Additional Information
 Earth MOID = 1.24352 au 
 Jupiter MOID = 2.2689 au 
 T_jup = 3.336 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456711.5 (2014-Feb-23.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723186717474806 5.3736e-08  
q 2.236216440428154 1.4399e-07 au
tp 2457445.552162924117
(2016-Feb-27.05216292)
0.0001002 TDB
node 57.50789457023439 4.8613e-05 deg
peri 285.9639922420343 5.2323e-05 deg
i 6.405944401258732 6.1811e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      610  
   data-arc span      10848 days (29.70 yr)  
   first obs. used      1989-09-26  
   last obs. used      2019-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56377  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:30:21  

Additional Information
 Jupiter MOID = 2.2689 au 
 T_jup = 3.336 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.887591089246756E-15 -7.691712508126134E-15 1.937553093681705E-12 1.266624552437605E-14 3.29424155872631E-13 1.566740223040419E-16
q -7.691712508126134E-15 2.073240448052814E-14 -4.371606984096543E-12 -3.476339989842189E-14 -7.43512172776634E-13 -1.099379847126667E-16
tp 1.937553093681705E-12 -4.371606984096543E-12 1.004031410177668E-8 2.300792259127765E-11 1.962746935752676E-9 -2.952042150512703E-13
node 1.266624552437605E-14 -3.476339989842189E-14 2.300792259127765E-11 2.36324002146189E-9 -2.343430952649188E-9 -6.170513736587323E-11
peri 3.29424155872631E-13 -7.43512172776634E-13 1.962746935752676E-9 -2.343430952649188E-9 2.737669206103944E-9 6.126290662645889E-11
i 1.566740223040419E-16 -1.099379847126667E-16 -2.952042150512703E-13 -6.170513736587323E-11 6.126290662645889E-11 3.820630834628326E-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 15.1   n/a MPO309514  

46549 (1989 SA2)          Discovered 1989-Sep-26 by Elst, E. W. at La Silla
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 SA2 = 1998 TM34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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