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91867 (1999 UC30)
Classification: Main-belt Asteroid          SPK-ID: 2091867
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04140673889970164 3.8017e-08  
a 3.032763975028557 1.847e-08 au
q 2.907187108970128 1.2373e-07 au
i 2.757479032353369 3.9751e-06 deg
node 49.8180969543146 9.144e-05 deg
peri 46.84994964982236 0.00010881 deg
M 323.2045616208271 6.0191e-05 deg
tp 2459593.673173528197
(2022-Jan-14.17317353)
0.00032292 TDB
period 1929.107128407758
5.28
1.7623e-05
4.825e-08
d
yr
n .1866148306118883 1.7048e-09 deg/d
Q 3.158340841086986 1.9235e-08 au
  Orbit Determination Parameters
   # obs. used (total)      459  
   data-arc span      10891 days (29.82 yr)  
   first obs. used      1991-02-20  
   last obs. used      2020-12-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58492  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:48:10  

Additional Information
 Earth MOID = 1.92501 au 
 Jupiter MOID = 1.90672 au 
 T_jup = 3.240 
[ 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 15.86   n/a E2021B10  

91867 (1999 UC30)          Discovered 1999-Oct-31 by Spacewatch at Kitt Peak
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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