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266691 (2009 PB)
Classification: Mars-crossing Asteroid          SPK-ID: 2266691
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3672627191201926 8.1536e-08  
a 2.397533441720128 1.4229e-08 au
q 1.5170087907324 2.0315e-07 au
i 6.745494479321209 5.3976e-06 deg
node 246.8951443457317 5.3161e-05 deg
peri 107.0935730039121 5.4302e-05 deg
M 321.24004932728 1.0404e-05 deg
tp 2459146.491023123943
(2020-Oct-23.99102312)
4.021e-05 TDB
period 1355.95550077957
3.71
1.2071e-05
3.305e-08
d
yr
n .2654954383038585 2.3634e-09 deg/d
Q 3.278058092707856 1.9454e-08 au
  Orbit Determination Parameters
   # obs. used (total)      456  
   data-arc span      10413 days (28.51 yr)  
   first obs. used      1992-01-27  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44975  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 18:07:54  

Additional Information
 Earth MOID = .530902 au 
 Jupiter MOID = 2.24121 au 
 T_jup = 3.424 
[ 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 16.1   n/a MPO268292  

266691 (2009 PB)          Discovered 2009-Aug-01 by Tozzi, F. at Skylive
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

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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
1997-May-27 06:30 < 00:01 Iris 0.0331243585592613 0.0331191776237865 0.0331295395556775 5.96331265968306 5.96331263058005 2450595.771004857 0.458783258258698 268.596852132264 70.8961262375589 -16.5217261726798 26599.3976052142 T 18 CATAB v2.0f-lin.ifort 2020-Aug-25 18:08:15 2020-Aug-25 18:08
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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