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JPL Small-Body Database Browser
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441861 (2009 WF219)
Classification: Main-belt Asteroid          SPK-ID: 2441861
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1693700720422605 1.0355e-07  
a 2.194003877669542 5.466e-08 au
q 1.822405282847653 2.6345e-07 au
i 4.722071967545495 6.6097e-06 deg
node 64.83170334287092 0.00013329 deg
peri 318.5552999782031 0.00014681 deg
M 353.7235291443122 7.5207e-05 deg
tp 2458621.195099980399
(2019-May-17.69509998)
0.00024869 TDB
period 1187.010370038184
3.25
4.4359e-05
1.214e-07
d
yr
n .3032829443507047 1.1334e-08 deg/d
Q 2.565602472491432 6.3918e-08 au
  Orbit Determination Parameters
   # obs. used (total)      47  
   data-arc span      3713 days (10.17 yr)  
   first obs. used      2006-12-26  
   last obs. used      2017-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57861  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:34:16  

Additional Information
 Earth MOID = .828681 au 
 Jupiter MOID = 2.88434 au 
 T_jup = 3.647 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456851.5 (2014-Jul-13.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1699650190929615 1.0457e-07  
q 1.82079715394789 2.6624e-07 au
tp 2457432.576105717409
(2016-Feb-14.07610572)
0.00020675 TDB
node 64.85874180794602 0.00013342 deg
peri 318.2031156521939 0.00014676 deg
i 4.721212927104342 6.6037e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      47  
   data-arc span      3713 days (10.17 yr)  
   first obs. used      2006-12-26  
   last obs. used      2017-02-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57861  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:34:16  

Additional Information
 Jupiter MOID = 2.88434 au 
 T_jup = 3.647 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.09354072310305E-14 -2.767095647755949E-14 -1.687874407061463E-11 -2.103756952281699E-14 -4.674653722785383E-12 -5.298460832362655E-14
q -2.767095647755949E-14 7.088352013939822E-14 4.545287514322476E-11 -1.50046388665207E-15 1.265061340402202E-11 1.402473428251601E-13
tp -1.687874407061463E-11 4.545287514322476E-11 4.274580649797845E-8 -2.634608538707403E-10 1.27246726999963E-8 1.149194888774565E-10
node -2.103756952281699E-14 -1.50046388665207E-15 -2.634608538707403E-10 1.779982911177433E-8 -1.782104832177313E-8 1.998706608916677E-10
peri -4.674653722785383E-12 1.265061340402202E-11 1.27246726999963E-8 -1.782104832177313E-8 2.15374556165922E-8 -1.662093770074001E-10
i -5.298460832362655E-14 1.402473428251601E-13 1.149194888774565E-10 1.998706608916677E-10 -1.662093770074001E-10 4.36090107665434E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.4   n/a MPO402743  

441861 (2009 WF219)          Discovered 2009-Nov-16 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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