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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2699941668101019 5.1201e-08  
a 2.786503495274429 1.6485e-08 au
q 2.034163805754373 1.4042e-07 au
i 18.47476795286159 4.2109e-06 deg
node 96.26227781873489 1.527e-05 deg
peri 276.2759149214795 1.6533e-05 deg
M 128.2854484785497 9.4338e-06 deg
tp 2458595.071709097329
(2019-Apr-21.57170910)
4.1378e-05 TDB
period 1698.97823416352
4.65
1.5077e-05
4.128e-08
d
yr
n .2118920612171605 1.8804e-09 deg/d
Q 3.538843184794485 2.0936e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1280  
   data-arc span      8385 days (22.96 yr)  
   first obs. used      1998-04-02  
   last obs. used      2021-03-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49656  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 08:12:09  

Additional Information
 Earth MOID = 1.1293 au 
 Jupiter MOID = 2.29131 au 
 T_jup = 3.204 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456986.5 (2014-Nov-25.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2691377504715736 5.1093e-08  
q 2.036410400811406 1.3984e-07 au
tp 2456890.235421064322
(2014-Aug-20.73542106)
3.5114e-05 TDB
node 96.67142106245856 1.5286e-05 deg
peri 275.1230313619324 1.6582e-05 deg
i 18.46886653109348 4.2046e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1280  
   data-arc span      8385 days (22.96 yr)  
   first obs. used      1998-04-02  
   last obs. used      2021-03-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49656  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 08:12:09  

Additional Information
 Jupiter MOID = 2.29131 au 
 T_jup = 3.204 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.610529254920293E-15 -7.119661603614516E-15 7.108364998926347E-13 -2.159833712589085E-14 9.572630514062438E-14 -6.650785901383257E-15
q -7.119661603614516E-15 1.955465166518998E-14 -1.870842412312793E-12 5.823417591181457E-14 -2.46325961900492E-13 1.871038039429653E-14
tp 7.108364998926347E-13 -1.870842412312793E-12 1.232987537490886E-9 -4.587925984668742E-12 2.590970844072699E-10 -4.757350768367096E-12
node -2.159833712589085E-14 5.823417591181457E-14 -4.587925984668742E-12 2.336514811762885E-10 -2.215992789743723E-10 -1.337322146008696E-11
peri 9.572630514062438E-14 -2.46325961900492E-13 2.590970844072699E-10 -2.215992789743723E-10 2.74956979360636E-10 1.181724270230905E-11
i -6.650785901383257E-15 1.871038039429653E-14 -4.757350768367096E-12 -1.337322146008696E-11 1.181724270230905E-11 1.767835171230909E-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 13.81   n/a E2021B10  
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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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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