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35721 (1999 FW39)
Classification: Main-belt Asteroid          SPK-ID: 2035721
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1370593140187276 4.0421e-08  
a 2.265552057765999 8.8092e-09 au
q 1.955037046854875 9.3544e-08 au
i 6.209679720453437 4.1471e-06 deg
node 342.7201319869147 2.8868e-05 deg
peri 21.31543045820125 3.1087e-05 deg
M 237.0680123930442 1.323e-05 deg
tp 2459425.825967276547
(2021-Jul-30.32596728)
4.7223e-05 TDB
period 1245.545209186003
3.41
7.2646e-06
1.989e-08
d
yr
n .2890300547462821 1.6858e-09 deg/d
Q 2.576067068677124 1.0017e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1344  
   data-arc span      11934 days (32.67 yr)  
   first obs. used      1987-12-12  
   last obs. used      2020-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5103  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 00:39:13  

Additional Information
 Earth MOID = .953675 au 
 Jupiter MOID = 2.87574 au 
 T_jup = 3.596 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457210.5 (2015-Jul-07.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1363207501171946 4.0387e-08  
q 1.95689760529403 9.3366e-08 au
tp 2456932.851549468220
(2014-Oct-02.35154947)
4.0472e-05 TDB
node 342.7531392101589 2.8842e-05 deg
peri 20.94828926205035 3.1095e-05 deg
i 6.212886161424602 4.147e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1344  
   data-arc span      11934 days (32.67 yr)  
   first obs. used      1987-12-12  
   last obs. used      2020-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5103  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 00:39:13  

Additional Information
 Jupiter MOID = 2.87574 au 
 T_jup = 3.596 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.631069438401493E-15 -3.758640388303493E-15 -1.371814203555976E-13 4.284763074715437E-15 -5.061914047034459E-14 2.175851785045666E-15
q -3.758640388303493E-15 8.717139978580683E-15 4.176545456173316E-13 -1.009273010615208E-14 1.479494568103504E-13 -4.716206821182831E-15
tp -1.371814203555976E-13 4.176545456173316E-13 1.637972383238176E-9 -1.07399021928112E-11 4.775812027425333E-10 5.048918017957723E-13
node 4.284763074715437E-15 -1.009273010615208E-14 -1.07399021928112E-11 8.318854372276292E-10 -8.296676764898763E-10 2.704153211618974E-11
peri -5.061914047034459E-14 1.479494568103504E-13 4.775812027425333E-10 -8.296676764898763E-10 9.66906902020997E-10 -2.674800677896587E-11
i 2.175851785045666E-15 -4.716206821182831E-15 5.048918017957723E-13 2.704153211618974E-11 -2.674800677896587E-11 1.719751089881997E-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 15.0   n/a MPO412439  

35721 (1999 FW39)          Discovered 1999-Mar-20 by LINEAR at Socorro
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 FW39 = 1987 XK1 = 1990 RH10 = 2001 XK25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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