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441278 (2007 WB44)
Classification: Main-belt Asteroid          SPK-ID: 2441278
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1039064601059479 7.9441e-08  
a 2.990358107292801 4.4124e-08 au
q 2.679640581914884 2.268e-07 au
i 9.651380188754011 8.4291e-06 deg
node 304.001070871877 4.5719e-05 deg
peri 221.1233856655103 5.9086e-05 deg
M 116.3430500542523 3.9248e-05 deg
tp 2458390.090658780391
(2018-Sep-28.59065878)
0.00020216 TDB
period 1888.788051684981
5.17
4.1805e-05
1.145e-07
d
yr
n .1905984102762855 4.2185e-09 deg/d
Q 3.301075632670718 4.8709e-08 au
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      6817 days (18.66 yr)  
   first obs. used      2000-10-02  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58021  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:41:58  

Additional Information
 Earth MOID = 1.69697 au 
 Jupiter MOID = 1.75893 au 
 T_jup = 3.227 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456991.5 (2014-Nov-30.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1028635745180179 7.9232e-08  
q 2.679156544949163 2.2561e-07 au
tp 2456497.505344099241
(2013-Jul-24.00534410)
0.00019717 TDB
node 304.0896953732998 4.5832e-05 deg
peri 219.5820937207299 5.9536e-05 deg
i 9.641806023317541 8.421e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      6817 days (18.66 yr)  
   first obs. used      2000-10-02  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58021  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:41:58  

Additional Information
 Jupiter MOID = 1.75893 au 
 T_jup = 3.227 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.277775983678467E-15 -1.764018250441299E-14 -5.169204953292384E-13 -4.787678198491964E-14 -6.438565512443546E-14 -2.033496476031742E-15
q -1.764018250441299E-14 5.089777468111166E-14 2.25441979904033E-12 1.490162053669078E-13 3.876514572078412E-13 9.695064519764843E-15
tp -5.169204953292384E-13 2.25441979904033E-12 3.887408841220953E-8 -1.001242824421044E-13 7.562877688966094E-9 -1.862968210657301E-11
node -4.787678198491964E-14 1.490162053669078E-13 -1.001242824421044E-13 2.100612774813469E-9 -2.068900759443508E-9 1.0906011653238E-11
peri -6.438565512443546E-14 3.876514572078412E-13 7.562877688966094E-9 -2.068900759443508E-9 3.54452473824133E-9 -1.434141025578376E-11
i -2.033496476031742E-15 9.695064519764843E-15 -1.862968210657301E-11 1.0906011653238E-11 -1.434141025578376E-11 7.091333454009322E-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 16.1   n/a MPO434637  

441278 (2007 WB44)          Discovered 2007-Nov-19 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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