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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 ]

[ show orbit diagram ]
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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1939-Oct-07 04:57 00:02 Amphi 0.0246950316514284 0.0246853050106629 0.0247047636210711 7.2029284516237 7.20292841930497 2429543.705951843 1.86758446149006 754.482657531565 69.2918314023867 -50.2796253112401 41120.0128155198 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:25 2021-Apr-13 21:32
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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