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441557 (2008 TO138)
Classification: Main-belt Asteroid          SPK-ID: 2441557
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09487716224315745 5.4323e-08  
a 2.483995963375728 3.2617e-08 au
q 2.248321475347181 1.3238e-07 au
i 8.362581437736115 6.0982e-06 deg
node 231.4467368581002 5.143e-05 deg
peri 4.540837366452092 6.7719e-05 deg
M 136.3588194609499 4.4086e-05 deg
tp 2458458.866537706644
(2018-Dec-06.36653771)
0.00017777 TDB
period 1429.962852395099
3.92
2.8165e-05
7.711e-08
d
yr
n .2517547916696034 4.9586e-09 deg/d
Q 2.719670451404276 3.5711e-08 au
  Orbit Determination Parameters
   # obs. used (total)      108  
   data-arc span      8330 days (22.81 yr)  
   first obs. used      1996-10-08  
   last obs. used      2019-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68298  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:11  

Additional Information
 Earth MOID = 1.2369 au 
 Jupiter MOID = 2.27768 au 
 T_jup = 3.456 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457391.5 (2016-Jan-04.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09434289023477681 5.4389e-08  
q 2.250474317305655 1.3272e-07 au
tp 2457029.934223283112
(2015-Jan-07.43422328)
0.00018859 TDB
node 231.4626784798743 5.142e-05 deg
peri 5.004693517642587 6.7818e-05 deg
i 8.361853411518553 6.0979e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      108  
   data-arc span      8330 days (22.81 yr)  
   first obs. used      1996-10-08  
   last obs. used      2019-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68298  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:11  

Additional Information
 Jupiter MOID = 2.27768 au 
 T_jup = 3.456 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.958191722764096E-15 -7.041934116485365E-15 7.312294870263235E-13 4.160068400480895E-14 1.399844517303231E-13 -1.045599565530931E-15
q -7.041934116485365E-15 1.76154920414187E-14 -4.171531002300464E-12 -1.076735590459049E-13 -8.65253644515501E-13 3.583838143886217E-15
tp 7.312294870263235E-13 -4.171531002300464E-12 3.556463348132966E-8 2.038863815848036E-10 8.406981805235138E-9 -2.287191309413167E-12
node 4.160068400480895E-14 -1.076735590459049E-13 2.038863815848036E-10 2.644030295683702E-9 -2.566023594056115E-9 2.584376487006651E-11
peri 1.399844517303231E-13 -8.65253644515501E-13 8.406981805235138E-9 -2.566023594056115E-9 4.599301069126229E-9 -2.593292676312265E-11
i -1.045599565530931E-15 3.583838143886217E-15 -2.287191309413167E-12 2.584376487006651E-11 -2.593292676312265E-11 3.718490251210952E-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 16.7   n/a MPO434638  

441557 (2008 TO138)          Discovered 2008-Sep-23 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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