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115781 (2003 UH217)
Classification: Main-belt Asteroid          SPK-ID: 2115781
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1332756029888182 5.3923e-08  
a 2.641675419006175 1.2692e-08 au
q 2.289604534637388 1.4484e-07 au
i 5.392593117013892 4.5555e-06 deg
node 62.07427653765798 5.4853e-05 deg
peri 330.292731642816 5.7284e-05 deg
M 356.6491303417919 1.4684e-05 deg
tp 2459215.097303700624
(2020-Dec-31.59730370)
6.3946e-05 TDB
period 1568.2583532762
4.29
1.1302e-05
3.094e-08
d
yr
n .2295540140104692 1.6544e-09 deg/d
Q 2.993746303374962 1.4384e-08 au
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      7700 days (21.08 yr)  
   first obs. used      1999-12-07  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50832  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:45:08  

Additional Information
 Earth MOID = 1.2966 au 
 Jupiter MOID = 2.43062 au 
 T_jup = 3.376 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457748.5 (2016-Dec-26.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1358137303993691 5.4339e-08  
q 2.2828127438887 1.4643e-07 au
tp 2457643.534803943551
(2016-Sep-12.03480394)
6.4297e-05 TDB
node 62.113556509036 5.4759e-05 deg
peri 329.7142243417115 5.7054e-05 deg
i 5.399160829933312 4.5669e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      7700 days (21.08 yr)  
   first obs. used      1999-12-07  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50832  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:45:08  

Additional Information
 Jupiter MOID = 2.43062 au 
 T_jup = 3.376 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.952712080260474E-15 -7.935455113249239E-15 -7.862105494505321E-13 -1.097544060458601E-14 -1.258482275812195E-13 -5.558188818057673E-15
q -7.935455113249239E-15 2.144165024331955E-14 1.846779595414721E-12 2.966399008277766E-14 2.737398293838394E-13 1.493068951698886E-14
tp -7.862105494505321E-13 1.846779595414721E-12 4.134105995366098E-9 -1.033762737460837E-11 1.062542001072858E-9 4.125412787918952E-12
node -1.097544060458601E-14 2.966399008277766E-14 -1.033762737460837E-11 2.998505041743727E-9 -2.987740165371228E-9 -1.378718753544359E-10
peri -1.258482275812195E-13 2.737398293838394E-13 1.062542001072858E-9 -2.987740165371228E-9 3.255193739169983E-9 1.382354180376711E-10
i -5.558188818057673E-15 1.493068951698886E-14 4.125412787918952E-12 -1.378718753544359E-10 1.382354180376711E-10 2.085619437194105E-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 15.95   n/a E2021B55  

115781 (2003 UH217)          Discovered 2003-Oct-21 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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