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35918 (1999 JL99)
Classification: Main-belt Asteroid          SPK-ID: 2035918
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2698360366957016 5.1704e-08  
a 2.786693504705311 1.6938e-08 au
q 2.034743173909976 1.4215e-07 au
i 18.47566543591766 4.605e-06 deg
node 96.26570243852669 1.576e-05 deg
peri 276.2802366632839 1.7203e-05 deg
M 85.91671084116534 9.3038e-06 deg
tp 2458594.984576796076
(2019-Apr-21.48457680)		 4.1992e-05 TDB
period 1699.152015063714
4.65		 1.5492e-05
4.241e-08		 d
yr
n .2118703899406558 1.9317e-09 deg/d
Q 3.538643835500647 2.1509e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1149  
   data-arc span      8057 days (22.06 yr)  
   first obs. used      1998-04-02  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50879  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:10:19  

Additional Information
 Earth MOID = 1.13102 au 
 Jupiter MOID = 2.2903 au 
 T_jup = 3.204 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456724.5 (2014-Mar-08.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .26928907969294 5.1538e-08  
q 2.036391373560335 1.4137e-07 au
tp 2456890.214389747642
(2014-Aug-20.71438975)		 3.6542e-05 TDB
node 96.67332277261254 1.5785e-05 deg
peri 275.1140536878729 1.7271e-05 deg
i 18.46902079865638 4.596e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      1149  
   data-arc span      8057 days (22.06 yr)  
   first obs. used      1998-04-02  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50879  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:10:19  

Additional Information
 Jupiter MOID = 2.2903 au 
 T_jup = 3.204 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.656212062224631E-15 -7.259256723098534E-15 7.656384577368042E-13 -1.74439743062463E-14 1.076822865368941E-13 -9.305707387015985E-15
q -7.259256723098534E-15 1.998494040608514E-14 -2.04812817622186E-12 4.660126432770365E-14 -2.876014772123858E-13 2.632205864254996E-14
tp 7.656384577368042E-13 -2.04812817622186E-12 1.335294290697286E-9 -2.631964774470978E-12 2.891164194681451E-10 -6.486358188186612E-12
node -1.74439743062463E-14 4.660126432770365E-14 -2.631964774470978E-12 2.491783286465016E-10 -2.359596222308541E-10 -2.045985045014292E-11
peri 1.076822865368941E-13 -2.876014772123858E-13 2.891164194681451E-10 -2.359596222308541E-10 2.982893002238655E-10 1.813170824712015E-11
i -9.305707387015985E-15 2.632205864254996E-14 -6.486358188186612E-12 -2.045985045014292E-11 1.813170824712015E-11 2.112323400721433E-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 13.7   n/a MPO412440  
diameter diameter 4.469 km 0.979 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.308   0.155 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

35918 (1999 JL99)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

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