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117861 (2005 LB2)
Classification: Main-belt Asteroid          SPK-ID: 2117861
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1453197007961632 7.54e-08  
a 2.649584537492053 1.9073e-08 au
q 2.264547705269568 2.0061e-07 au
i 14.70221971632803 6.0559e-06 deg
node 91.33143610086003 2.1932e-05 deg
peri 152.411320241124 2.7419e-05 deg
M 175.645033616046 1.9001e-05 deg
tp 2458231.903377561302
(2018-Apr-23.40337756)
8.0306e-05 TDB
period 1575.306619159961
4.31
1.701e-05
4.657e-08
d
yr
n .2285269392138855 2.4676e-09 deg/d
Q 3.034621369714539 2.1845e-08 au
  Orbit Determination Parameters
   # obs. used (total)      303  
   data-arc span      6701 days (18.35 yr)  
   first obs. used      2001-06-26  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58413  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 13:55:36  

Additional Information
 Earth MOID = 1.25963 au 
 Jupiter MOID = 2.04768 au 
 T_jup = 3.330 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456981.5 (2014-Nov-20.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1454019033009515 7.5166e-08  
q 2.264531034076863 2.0002e-07 au
tp 2456658.476779580183
(2013-Dec-31.97677958)
7.7082e-05 TDB
node 91.37356394925543 2.195e-05 deg
peri 152.7175855989032 2.7468e-05 deg
i 14.69597610154197 6.0527e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      303  
   data-arc span      6701 days (18.35 yr)  
   first obs. used      2001-06-26  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58413  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 13:55:36  

Additional Information
 Jupiter MOID = 2.04768 au 
 T_jup = 3.330 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.64995612941094E-15 -1.498443244216409E-14 8.855252611459186E-13 4.586659587684666E-14 -1.069846477008232E-13 1.20652799381836E-14
q -1.498443244216409E-14 4.000859380470369E-14 -2.245024367375976E-12 -1.205166696505154E-13 3.153772894810616E-13 -3.072575585425915E-14
tp 8.855252611459186E-13 -2.245024367375976E-12 5.941687398482126E-9 1.16160682926764E-11 1.275100922120139E-9 -8.208181398447311E-12
node 4.586659587684666E-14 -1.205166696505154E-13 1.16160682926764E-11 4.817964890323299E-10 -4.646136039666018E-10 -3.645422269069925E-11
peri -1.069846477008232E-13 3.153772894810616E-13 1.275100922120139E-9 -4.646136039666018E-10 7.54484925583358E-10 3.291639444746945E-11
i 1.20652799381836E-14 -3.072575585425915E-14 -8.208181398447311E-12 -3.645422269069925E-11 3.291639444746945E-11 3.663526662300627E-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 15.8   n/a MPO453649  

117861 (2005 LB2)          Discovered 2005-Jun-01 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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