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85819 (1998 XF9)
Classification: Main-belt Asteroid          SPK-ID: 2085819
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2006279647754659 4.2828e-08  
a 2.194177320509447 7.8781e-09 au
q 1.753963990339152 9.4966e-08 au
i 5.84919423977889 4.4151e-06 deg
node 259.0911879450219 4.494e-05 deg
peri 112.6856994412176 4.6503e-05 deg
M 22.95756771803736 1.4668e-05 deg
tp 2459320.794159957329
(2021-Apr-16.29415996)
4.8078e-05 TDB
period 1187.151128120098
3.25
6.3937e-06
1.75e-08
d
yr
n .3032469847121104 1.6332e-09 deg/d
Q 2.634390650679742 9.4587e-09 au
  Orbit Determination Parameters
   # obs. used (total)      627  
   data-arc span      9540 days (26.12 yr)  
   first obs. used      1994-06-08  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59073  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:10:31  

Additional Information
 Earth MOID = .763856 au 
 Jupiter MOID = 2.8645 au 
 T_jup = 3.637 
[ 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 16.22   n/a E2021B10  

85819 (1998 XF9)          Discovered 1998-Dec-12 by Tombelli, M., Boattini, A. at San Marcello
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 XF9 = 2001 QM118 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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