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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1370593145942968 4.0498e-08  
a 2.265552057800053 8.8121e-09 au
q 1.955037045580279 9.3703e-08 au
i 6.209679271748598 4.1629e-06 deg
node 342.7201316635064 2.8868e-05 deg
peri 21.31543078706186 3.1091e-05 deg
M 237.068012351426 1.3232e-05 deg
tp 2459425.825967430129
(2021-Jul-30.32596743)
4.7227e-05 TDB
period 1245.545209214086
3.41
7.267e-06
1.99e-08
d
yr
n .2890300547397655 1.6863e-09 deg/d
Q 2.576067070019827 1.002e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1328  
   data-arc span      11876 days (32.51 yr)  
   first obs. used      1987-12-12  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50732  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 20:32:17  

Additional Information
 Earth MOID = .953675 au 
 Jupiter MOID = 2.87574 au 
 T_jup = 3.596 
[ show covariance matrix ]

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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2107-Dec-18 19:50 00:02 Vesta 0.0429879249989105 0.0429838511727497 0.0429920079035128 5.2301385186807 5.23013798946229 2490977.326484818 1.62142199106817 1023.15518998692 40.3842118396056 78.7729887822299 155811.716086606 T 28 CATAB v2.0f-lin.ifort 2020-Jun-23 20:32:32 2020-Jun-23 20:32

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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