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JPL Small-Body Database Browser
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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1369318759071355 6.0068e-08  
a 2.265723832244155 1.0067e-08 au
q 1.955474017607459 1.3447e-07 au
i 6.209180562872485 5.8672e-06 deg
node 342.7212017926353 2.9597e-05 deg
peri 21.40567064458241 3.294e-05 deg
M 121.3445260814106 1.366e-05 deg
tp 2458180.618659326692
(2018-Mar-03.11865933)
4.6565e-05 TDB
period 1245.686867992536
3.41
8.3024e-06
2.273e-08
d
yr
n .2889971864118238 1.9261e-09 deg/d
Q 2.575973646880851 1.1446e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1134  
   data-arc span      11464 days (31.39 yr)  
   first obs. used      1987-12-12  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52802  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:48:24  

Additional Information
 Earth MOID = .953269 au 
 Jupiter MOID = 2.87246 au 
 T_jup = 3.596 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456599.5 (2013-Nov-03.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1365980174986512 6.0174e-08  
q 1.956497653434012 1.3476e-07 au
tp 2456932.806445407441
(2014-Oct-02.30644541)
4.5568e-05 TDB
node 342.7593404829305 2.9574e-05 deg
peri 20.93176670629384 3.293e-05 deg
i 6.212386754879812 5.868e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1134  
   data-arc span      11464 days (31.39 yr)  
   first obs. used      1987-12-12  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52802  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:48:24  

Additional Information
 Jupiter MOID = 2.87246 au 
 T_jup = 3.596 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.620872760944792E-15 -8.092721975817744E-15 -1.071421133481603E-12 1.626583980150467E-14 -4.431937599259509E-13 -6.992237041947713E-17
q -8.092721975817744E-15 1.815910728632678E-14 2.450009161779614E-12 -3.640781347895422E-14 1.002052312456287E-12 3.123419145877453E-16
tp -1.071421133481603E-12 2.450009161779614E-12 2.076406912023409E-9 -1.267717357891418E-11 6.587527346796558E-10 -1.474126212105641E-12
node 1.626583980150467E-14 -3.640781347895422E-14 -1.267717357891418E-11 8.746195845295226E-10 -8.731784163082271E-10 4.158257280478818E-12
peri -4.431937599259509E-13 1.002052312456287E-12 6.587527346796558E-10 -8.731784163082271E-10 1.084401334377427E-9 -4.591881426502553E-12
i -6.992237041947713E-17 3.123419145877453E-16 -1.474126212105641E-12 4.158257280478818E-12 -4.591881426502553E-12 3.44334992379567E-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

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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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