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46687 (1997 AP18)
Classification: Main-belt Asteroid          SPK-ID: 2046687
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .143615806756669 3.976e-08  
a 2.364465842266203 8.3369e-09 au
q 2.024891172780556 9.326e-08 au
i 3.1080694735728 3.4267e-06 deg
node 76.65821419534335 8.1695e-05 deg
peri 96.84288947012865 8.2639e-05 deg
M 212.2167894326294 1.5217e-05 deg
tp 2459941.655741152133
(2022-Dec-28.15574115)
5.7634e-05 TDB
period 1327.999750860061
3.64
7.0236e-06
1.923e-08
d
yr
n .2710843882062861 1.4337e-09 deg/d
Q 2.704040511751852 9.5342e-09 au
  Orbit Determination Parameters
   # obs. used (total)      894  
   data-arc span      10169 days (27.84 yr)  
   first obs. used      1992-11-27  
   last obs. used      2020-09-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53368  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:51:42  

Additional Information
 Earth MOID = 1.0335 au 
 Jupiter MOID = 2.26003 au 
 T_jup = 3.533 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.78   n/a E2021B10  

46687 (1997 AP18)          Discovered 1997-Jan-15 by Farra d'Isonzo at Farra d'Isonzo
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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