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193798 (2001 PF8)
Classification: Main-belt Asteroid          SPK-ID: 2193798
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2200800112006487 3.6053e-08  
a 2.234458011251364 9.9014e-09 au
q 1.742698467107785 8.1786e-08 au
i 6.808978759838535 5.5408e-06 deg
node 46.85447361753527 3.6406e-05 deg
peri 248.9369371945603 4.0034e-05 deg
M 303.0872905936628 1.9299e-05 deg
tp 2459393.369468839610
(2021-Jun-27.86946884)
6.6258e-05 TDB
period 1219.991272714355
3.34
8.1091e-06
2.22e-08
d
yr
n .2950840781008515 1.9614e-09 deg/d
Q 2.726217555394944 1.208e-08 au
  Orbit Determination Parameters
   # obs. used (total)      283  
   data-arc span      7778 days (21.30 yr)  
   first obs. used      1998-10-17  
   last obs. used      2020-02-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6908  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:21:47  

Additional Information
 Earth MOID = .739271 au 
 Jupiter MOID = 2.50135 au 
 T_jup = 3.598 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457234.5 (2015-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2205168690879702 3.6011e-08  
q 1.741740627654967 8.1721e-08 au
tp 2456952.680907544622
(2014-Oct-22.18090754)
5.6449e-05 TDB
node 46.88457911927117 3.6419e-05 deg
peri 248.8754368516689 4.0034e-05 deg
i 6.808545425113768 5.5398e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      283  
   data-arc span      7778 days (21.30 yr)  
   first obs. used      1998-10-17  
   last obs. used      2020-02-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6908  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:21:47  

Additional Information
 Jupiter MOID = 2.50135 au 
 T_jup = 3.598 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.296819200819878E-15 -2.929965912424331E-15 -2.809265057433545E-13 -9.49919955761449E-17 -7.554109786142063E-14 9.649408392083285E-16
q -2.929965912424331E-15 6.678379497091511E-15 8.453123577995096E-13 -3.723627349377542E-15 2.335002364836785E-13 -1.444451643118339E-15
tp -2.809265057433545E-13 8.453123577995096E-13 3.186529140767943E-9 -4.831646190180067E-11 9.536779471615388E-10 4.129238545243284E-12
node -9.49919955761449E-17 -3.723627349377542E-15 -4.831646190180067E-11 1.326371435177879E-9 -1.329811916478721E-9 -1.859765068480005E-11
peri -7.554109786142063E-14 2.335002364836785E-13 9.536779471615388E-10 -1.329811916478721E-9 1.60270769927349E-9 1.968992203515007E-11
i 9.649408392083285E-16 -1.444451643118339E-15 4.129238545243284E-12 -1.859765068480005E-11 1.968992203515007E-11 3.068884730748377E-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 17.35   n/a E2021B55  

193798 (2001 PF8)          Discovered 2001-Aug-11 by NEAT at Palomar
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

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Alternate Designations
 2001 PF8 = 1998 UR47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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