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295331 (2008 HL3)
Classification: Main-belt Asteroid          SPK-ID: 2295331
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2052540992496046 5.1879e-08  
a 3.021979143481925 3.693e-08 au
q 2.401705536435451 1.5411e-07 au
i 6.162556489905122 6.5653e-06 deg
node 30.02697700477404 7.7511e-05 deg
peri 206.569012299745 8.1464e-05 deg
M 96.25391734728733 2.3327e-05 deg
tp 2458487.459637691098
(2019-Jan-03.95963769)
0.0001223 TDB
period 1918.826116601788
5.25
3.5173e-05
9.63e-08
d
yr
n .1876147071823029 3.4391e-09 deg/d
Q 3.642252750528399 4.451e-08 au
  Orbit Determination Parameters
   # obs. used (total)      228  
   data-arc span      6357 days (17.40 yr)  
   first obs. used      2002-02-12  
   last obs. used      2019-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49392  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:42:55  

Additional Information
 Earth MOID = 1.39222 au 
 Jupiter MOID = 1.38078 au 
 T_jup = 3.205 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457077.5 (2015-Feb-24.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .204146474580246 5.1859e-08  
q 2.407309245909502 1.5406e-07 au
tp 2456568.283021731380
(2013-Oct-02.78302173)
0.00012276 TDB
node 30.07646914941726 7.7426e-05 deg
peri 206.8963483477158 8.1415e-05 deg
i 6.164538793561821 6.5663e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      228  
   data-arc span      6357 days (17.40 yr)  
   first obs. used      2002-02-12  
   last obs. used      2019-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49392  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 05:42:55  

Additional Information
 Jupiter MOID = 1.38078 au 
 T_jup = 3.205 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.689383755789784E-15 -7.846090145830086E-15 -8.649993182442564E-13 2.129859571321258E-15 -2.341129410042234E-13 -1.219291474171913E-15
q -7.846090145830086E-15 2.373371624609724E-14 2.148004760908505E-12 2.574361286519876E-15 6.553456024460027E-13 4.236437659913681E-15
tp -8.649993182442564E-13 2.148004760908505E-12 1.506978073344777E-8 8.507920213371283E-11 3.185917739121543E-9 -2.038998885062691E-11
node 2.129859571321258E-15 2.574361286519876E-15 8.507920213371283E-11 5.994789076629786E-9 -5.940746851092643E-9 -1.237504352194072E-10
peri -2.341129410042234E-13 6.553456024460027E-13 3.185917739121543E-9 -5.940746851092643E-9 6.628369457856433E-9 1.18903195451893E-10
i -1.219291474171913E-15 4.236437659913681E-15 -2.038998885062691E-11 -1.237504352194072E-10 1.18903195451893E-10 4.311649207868413E-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 15.7   n/a MPO437320  

295331 (2008 HL3)          Discovered 2008-Apr-28 by La Sagra at La Sagra
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

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