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91497 (1999 RF142)
Classification: Main-belt Asteroid          SPK-ID: 2091497
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0749326434631671 3.7822e-08  
a 2.998137868007732 1.9976e-08 au
q 2.773479472090889 1.0834e-07 au
i .4304514336368659 3.7122e-06 deg
node 119.1762249676423 0.00055722 deg
peri 220.4240919398042 0.00055801 deg
M 87.87887038371927 2.7481e-05 deg
tp 2458933.631323922304
(2020-Mar-25.13132392)
0.0001458 TDB
period 1896.163692823723
5.19
1.8951e-05
5.189e-08
d
yr
n .18985702624856 1.8975e-09 deg/d
Q 3.222796263924575 2.1473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1001  
   data-arc span      15472 days (42.36 yr)  
   first obs. used      1978-09-02  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54644  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:40:43  

Additional Information
 Earth MOID = 1.76374 au 
 Jupiter MOID = 2.07254 au 
 T_jup = 3.249 
[ 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 15.00   n/a E2021B10  

91497 (1999 RF142)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 RF142 = 1978 RB8 = 1997 EB4 = 2002 EE42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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