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187798 (1999 FW15)
Classification: Main-belt Asteroid          SPK-ID: 2187798
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2274177369101416 4.4924e-08  
a 2.681871050681011 1.1e-08 au
q 2.071966005650312 1.1876e-07 au
i 9.233582208510471 4.6651e-06 deg
node 152.0394738542864 3.0896e-05 deg
peri 33.80387559051415 3.2493e-05 deg
M 354.0049075486568 1.029e-05 deg
tp 2459227.214598375031
(2021-Jan-12.71459837)
4.5926e-05 TDB
period 1604.188007618844
4.39
9.8699e-06
2.702e-08
d
yr
n .224412598953636 1.3807e-09 deg/d
Q 3.29177609571171 1.3502e-08 au
  Orbit Determination Parameters
   # obs. used (total)      385  
   data-arc span      8086 days (22.14 yr)  
   first obs. used      1999-03-13  
   last obs. used      2021-05-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5365  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:15:19  

Additional Information
 Earth MOID = 1.08121 au 
 Jupiter MOID = 1.68417 au 
 T_jup = 3.320 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457417.5 (2016-Jan-30.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2284499312417758 4.492e-08  
q 2.068576474028398 1.189e-07 au
tp 2457623.642620624137
(2016-Aug-23.14262062)
4.225e-05 TDB
node 152.069959509146 3.0886e-05 deg
peri 33.90629174307306 3.2461e-05 deg
i 9.236544952601413 4.667e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      385  
   data-arc span      8086 days (22.14 yr)  
   first obs. used      1999-03-13  
   last obs. used      2021-05-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5365  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:15:19  

Additional Information
 Jupiter MOID = 1.68417 au 
 T_jup = 3.320 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.017768466038953E-15 -5.328490925440558E-15 5.422528403752171E-13 2.025793811766114E-14 1.450295744611907E-13 -2.267766853146824E-15
q -5.328490925440558E-15 1.413832476431432E-14 -1.373937828302381E-12 -5.147375683563095E-14 -3.72906978387849E-13 6.048475248551961E-15
tp 5.422528403752171E-13 -1.373937828302381E-12 1.785043367505665E-9 1.885103852105061E-11 4.490192929428273E-10 -1.2098307537125E-12
node 2.025793811766114E-14 -5.147375683563095E-14 1.885103852105061E-11 9.539371893733584E-10 -9.363730981957804E-10 3.055967730792652E-11
peri 1.450295744611907E-13 -3.72906978387849E-13 4.490192929428273E-10 -9.363730981957804E-10 1.05368709468291E-9 -3.041338667037866E-11
i -2.267766853146824E-15 6.048475248551961E-15 -1.2098307537125E-12 3.055967730792652E-11 -3.041338667037866E-11 2.178051116976685E-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 16.08   n/a MPCxxxxx  

187798 (1999 FW15)          Discovered 1999-Mar-20 by Spacewatch at Kitt Peak
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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