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17716 (1997 WW43)
Classification: Main-belt Asteroid          SPK-ID: 2017716
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07735757081018248 3.7017e-08  
a 2.236629948070345 5.5082e-09 au
q 2.063609688486318 8.3907e-08 au
i 3.111556842030305 2.9706e-06 deg
node 307.6917998263197 6.2464e-05 deg
peri 59.49389651482913 6.534e-05 deg
M 19.52873299193813 1.7707e-05 deg
tp 2459134.223251011767
(2020-Oct-11.72325101)
6.0143e-05 TDB
period 1221.770487906903
3.35
4.5133e-06
1.236e-08
d
yr
n .2946543590332912 1.0885e-09 deg/d
Q 2.409650207654371 5.9343e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1844  
   data-arc span      11102 days (30.40 yr)  
   first obs. used      1990-10-10  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51132  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:10:42  

Additional Information
 Earth MOID = 1.06206 au 
 Jupiter MOID = 2.89768 au 
 T_jup = 3.632 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457611.5 (2016-Aug-11.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07821162253710645 3.6983e-08  
q 2.061714048004557 8.3925e-08 au
tp 2457913.258324524052
(2017-Jun-08.75832452)
6.0446e-05 TDB
node 307.7343346689594 6.2515e-05 deg
peri 59.80965454574316 6.5326e-05 deg
i 3.110307995168448 2.9693e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1844  
   data-arc span      11102 days (30.40 yr)  
   first obs. used      1990-10-10  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51132  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:10:42  

Additional Information
 Jupiter MOID = 2.89768 au 
 T_jup = 3.632 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.367761170443618E-15 -3.098312513715934E-15 -2.2494742093027E-13 1.109291405621441E-14 -9.872904987198572E-14 -1.177695543064611E-15
q -3.098312513715934E-15 7.043386890916226E-15 4.19644623060074E-13 -2.459278572659792E-14 1.937986314583836E-13 2.755905255865047E-15
tp -2.2494742093027E-13 4.19644623060074E-13 3.653767811200539E-9 -9.126383802759245E-12 1.156166784950751E-9 -2.89007269291947E-13
node 1.109291405621441E-14 -2.459278572659792E-14 -9.126383802759245E-12 3.908162646993385E-9 -3.905312651959306E-9 6.567092008244263E-11
peri -9.872904987198572E-14 1.937986314583836E-13 1.156166784950751E-9 -3.905312651959306E-9 4.267536041962915E-9 -6.5661650029275E-11
i -1.177695543064611E-15 2.755905255865047E-15 -2.89007269291947E-13 6.567092008244263E-11 -6.5661650029275E-11 8.816972383532642E-12

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.18   n/a E2021B10  
diameter diameter 2.112 km 0.313 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.434   0.143 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17716 (1997 WW43)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WW43 = 1990 TW9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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