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115521 (2003 UL38)
Classification: Main-belt Asteroid          SPK-ID: 2115521
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1291461745387781 5.139e-08  
a 2.28604090953975 6.8255e-09 au
q 1.990807471233542 1.1865e-07 au
i 6.296768344079467 5.4007e-06 deg
node 327.7005622270211 2.9716e-05 deg
peri 27.96356432148779 3.2736e-05 deg
M 21.99885503795791 1.2177e-05 deg
tp 2459123.352474438182
(2020-Sep-30.85247444)
4.2715e-05 TDB
period 1262.479758802599
3.46
5.6541e-06
1.548e-08
d
yr
n .2851530866058737 1.2771e-09 deg/d
Q 2.581274347845957 7.707e-09 au
  Orbit Determination Parameters
   # obs. used (total)      934  
   data-arc span      7846 days (21.48 yr)  
   first obs. used      1999-07-14  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48327  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:43:57  

Additional Information
 Earth MOID = .986205 au 
 Jupiter MOID = 2.83823 au 
 T_jup = 3.583 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457529.5 (2016-May-21.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1297817087323783 5.1259e-08  
q 1.989285311989726 1.1841e-07 au
tp 2457861.860505029499
(2017-Apr-18.36050503)
4.3148e-05 TDB
node 327.7520037002404 2.9736e-05 deg
peri 28.28462341862738 3.2742e-05 deg
i 6.294799283737111 5.3994e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      934  
   data-arc span      7846 days (21.48 yr)  
   first obs. used      1999-07-14  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48327  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:43:57  

Additional Information
 Jupiter MOID = 2.83823 au 
 T_jup = 3.583 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.627497896388161E-15 -6.062207663964973E-15 -4.489433852739088E-13 1.79241260780527E-14 -1.41574674930193E-13 -2.209112688455638E-15
q -6.062207663964973E-15 1.402124052950893E-14 9.819569219538511E-13 -4.151155865751843E-14 3.077034414444326E-13 5.449428226896552E-15
tp -4.489433852739088E-13 9.819569219538511E-13 1.861760965338214E-9 -7.353339081715206E-12 5.9789422682671E-10 -5.279030151679181E-13
node 1.79241260780527E-14 -4.151155865751843E-14 -7.353339081715206E-12 8.842516357778325E-10 -8.807254430133303E-10 5.871269523624273E-11
peri -1.41574674930193E-13 3.077034414444326E-13 5.9789422682671E-10 -8.807254430133303E-10 1.072014209512421E-9 -5.861061497752172E-11
i -2.209112688455638E-15 5.449428226896552E-15 -5.279030151679181E-13 5.871269523624273E-11 -5.861061497752172E-11 2.91540310116854E-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 15.90   n/a E2021B55  

115521 (2003 UL38)          Discovered 2003-Oct-17 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2003 UL38 = 1999 NA25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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