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91884 (1999 UH49)
Classification: Main-belt Asteroid          SPK-ID: 2091884
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1417809251076992 4.1082e-08  
a 3.104420106989155 2.8731e-08 au
q 2.66427255229729 1.3107e-07 au
i 4.90202061109855 6.6615e-06 deg
node 346.9634758603743 5.5232e-05 deg
peri 88.95783666901561 6.1762e-05 deg
M 245.8985119127152 2.5811e-05 deg
tp 2459633.724873653080
(2022-Feb-23.22487365)
0.00014473 TDB
period 1997.878891296532
5.47
2.7735e-05
7.593e-08
d
yr
n .1801911024578554 2.5014e-09 deg/d
Q 3.54456766168102 3.2804e-08 au
  Orbit Determination Parameters
   # obs. used (total)      560  
   data-arc span      8064 days (22.08 yr)  
   first obs. used      1996-03-20  
   last obs. used      2018-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56168  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:48:39  

Additional Information
 Earth MOID = 1.68519 au 
 Jupiter MOID = 1.73795 au 
 T_jup = 3.200 
[ 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 15.1   n/a MPO432456  

91884 (1999 UH49)          Discovered 1999-Oct-31 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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