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181872 (1999 FL90)
Classification: Main-belt Asteroid          SPK-ID: 2181872
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1390683737375728 4.5333e-08  
a 2.751736889090604 2.0419e-08 au
q 2.369057314971086 1.2685e-07 au
i 13.41907764936385 6.22e-06 deg
node 176.4912231365805 1.991e-05 deg
peri 77.30452819840656 3.0995e-05 deg
M 220.6242012313588 2.7841e-05 deg
tp 2459845.996147076919
(2022-Sep-23.49614708)
0.00013356 TDB
period 1667.280941172801
4.56
1.8558e-05
5.081e-08
d
yr
n .215920419354622 2.4034e-09 deg/d
Q 3.134416463210122 2.3259e-08 au
  Orbit Determination Parameters
   # obs. used (total)      305  
   data-arc span      8862 days (24.26 yr)  
   first obs. used      1996-10-09  
   last obs. used      2021-01-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55196  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:24  

Additional Information
 Earth MOID = 1.39807 au 
 Jupiter MOID = 2.00082 au 
 T_jup = 3.292 
[ 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 16.05   n/a MPCxxxxx  

181872 (1999 FL90)          Discovered 1999-Mar-21 by Sloan Digital Sky Survey at Apache Point
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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