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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 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1990-Jul-25 10:03 < 00:01 Iris 0.0459729433294049 0.0459698164986489 0.04597607018225 3.23207537013558 3.23207533144642 2448097.918846331 0.334207103561615 165.020865959823 60.8103376334607 20.7937296421797 55899.3292102447 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 13:46:18 2021-Apr-13 13:46
2021-Aug-21 14:57 < 00:01 Iris 0.0215983823697357 0.0215963523463749 0.0216004125325387 3.38098861184049 3.38098853311632 2459448.122635665 0.369517201206477 137.583846951586 37.9486695490635 -44.851131603518 62264.6236639334 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 13:46:18 2021-Apr-13 13:46

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