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JPL Small-Body Database Browser
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243585 (1997 WY28)
Classification: Main-belt Asteroid          SPK-ID: 2243585
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08027195355688609 4.3411e-08  
a 2.433645358961186 1.543e-08 au
q 2.238291891732722 1.094e-07 au
i 3.926852650352796 4.8911e-06 deg
node 83.55772730439286 7.3406e-05 deg
peri 4.567378335835678 8.0866e-05 deg
M 204.113516199831 3.51e-05 deg
tp 2459200.968630673487
(2020-Dec-17.46863067)
0.00013756 TDB
period 1386.705901453021
3.80
1.3188e-05
3.611e-08
d
yr
n .2596080391832068 2.4689e-09 deg/d
Q 2.628998826189649 1.6668e-08 au
  Orbit Determination Parameters
   # obs. used (total)      239  
   data-arc span      9436 days (25.83 yr)  
   first obs. used      1993-10-21  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63077  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:15:52  

Additional Information
 Earth MOID = 1.25469 au 
 Jupiter MOID = 2.50597 au 
 T_jup = 3.498 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457069.5 (2015-Feb-16.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08022952453941855 4.3397e-08  
q 2.238041349486198 1.0944e-07 au
tp 2456423.930769669623
(2013-May-11.43076967)
0.00012825 TDB
node 83.58312700576509 7.3467e-05 deg
peri 3.665490655087061 8.0942e-05 deg
i 3.9259954723889 4.8889e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      239  
   data-arc span      9436 days (25.83 yr)  
   first obs. used      1993-10-21  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63077  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:15:52  

Additional Information
 Jupiter MOID = 2.50597 au 
 T_jup = 3.498 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.883339314557266E-15 -4.71148816479425E-15 -1.01928232600449E-12 -2.012438207820349E-14 -2.549668432879266E-13 -2.214539238408668E-16
q -4.71148816479425E-15 1.197819175464798E-14 2.984243742603772E-12 5.011610266589347E-14 7.725227320288653E-13 6.194566330051694E-16
tp -1.01928232600449E-12 2.984243742603772E-12 1.644794822516653E-8 3.565387355232428E-11 4.378566425366519E-9 -3.627805514966627E-12
node -2.012438207820349E-14 5.011610266589347E-14 3.565387355232428E-11 5.397361477102433E-9 -5.374980257952673E-9 -3.2945912106769E-11
peri -2.549668432879266E-13 7.725227320288653E-13 4.378566425366519E-9 -5.374980257952673E-9 6.551654109902208E-9 3.196120665108831E-11
i -2.214539238408668E-16 6.194566330051694E-16 -3.627805514966627E-12 -3.2945912106769E-11 3.196120665108831E-11 2.390144692483746E-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 17.0   n/a MPO440239  

243585 (1997 WY28)          Discovered 1997-Nov-29 by Spacewatch at Kitt Peak
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

[ show close-approach data ]
Alternate Designations
 1997 WY28 = 2001 YY15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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