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80249 (1999 WB9)
Classification: Main-belt Asteroid          SPK-ID: 2080249
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2449523655781158 3.4608e-08  
a 2.366336018862956 8.6178e-09 au
q 1.786696413289774 8.2519e-08 au
i 4.554394968518278 4.0909e-06 deg
node 258.3985407729429 5.7218e-05 deg
peri 190.220801926073 5.8252e-05 deg
M 273.1652384398365 1.3371e-05 deg
tp 2459521.203842685669
(2021-Nov-02.70384269)
5.0588e-05 TDB
period 1329.575636444272
3.64
7.2631e-06
1.989e-08
d
yr
n .2707630841993765 1.4791e-09 deg/d
Q 2.945975624436138 1.0729e-08 au
  Orbit Determination Parameters
   # obs. used (total)      733  
   data-arc span      7613 days (20.84 yr)  
   first obs. used      1999-10-13  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56109  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:46:16  

Additional Information
 Earth MOID = .80304 au 
 Jupiter MOID = 2.279 au 
 T_jup = 3.502 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457334.5 (2015-Nov-08.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .246305351318014 3.4725e-08  
q 1.782525692284372 8.2981e-08 au
tp 2456860.292731298902
(2014-Jul-21.79273130)
4.0813e-05 TDB
node 258.4773566742028 5.7071e-05 deg
peri 189.6589471959152 5.8096e-05 deg
i 4.561612057779875 4.0975e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      733  
   data-arc span      7613 days (20.84 yr)  
   first obs. used      1999-10-13  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56109  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:46:16  

Additional Information
 Jupiter MOID = 2.279 au 
 T_jup = 3.502 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.205848284681222E-15 -2.872761718710327E-15 -1.573869012721413E-13 -8.804219648104945E-15 -9.999477283753083E-15 4.936789627515856E-16
q -2.872761718710327E-15 6.885849775097911E-15 5.159463380805514E-13 2.117817873237601E-14 6.215808370522103E-14 -1.007769222390004E-15
tp -1.573869012721413E-13 5.159463380805514E-13 1.665715686521333E-9 -3.25235105572501E-12 4.62830214770604E-10 9.105967390222695E-13
node -8.804219648104945E-15 2.117817873237601E-14 -3.25235105572501E-12 3.257146585026333E-9 -3.247501338386127E-9 -1.341738756871404E-12
peri -9.999477283753083E-15 6.215808370522103E-14 4.62830214770604E-10 -3.247501338386127E-9 3.375129751176911E-9 1.635937973736532E-12
i 4.936789627515856E-16 -1.007769222390004E-15 9.105967390222695E-13 -1.341738756871404E-12 1.635937973736532E-12 1.678981640534116E-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 16.03   n/a E2021B10  

80249 (1999 WB9)          Discovered 1999-Nov-30 by Stafford, T. at Zeno
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

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Alternate Designations
 1999 WB9 = 2002 PE10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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