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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1424854005187322 5.0277e-08  
a 2.366558075374489 9.6432e-09 au
q 2.029358100153915 1.2054e-07 au
i 3.108861288164016 3.8825e-06 deg
node 76.69849918904143 9.4152e-05 deg
peri 96.8611425364642 9.508e-05 deg
M 104.9137810832325 1.5303e-05 deg
tp 2458612.970993329310
(2019-May-09.47099333)
5.558e-05 TDB
period 1329.762791513243
3.64
8.1277e-06
2.225e-08
d
yr
n .2707249761367796 1.6547e-09 deg/d
Q 2.703758050595063 1.1017e-08 au
  Orbit Determination Parameters
   # obs. used (total)      799  
   data-arc span      9658 days (26.44 yr)  
   first obs. used      1992-11-27  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53938  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:34:02  

Additional Information
 Earth MOID = 1.03714 au 
 Jupiter MOID = 2.26203 au 
 T_jup = 3.532 
[ 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 15.8   n/a MPO474340  

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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