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91845 (1999 UT2)
Classification: Main-belt Asteroid          SPK-ID: 2091845
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1036437260103743 3.7359e-08  
a 3.069328411469721 2.208e-08 au
q 2.751211778555495 1.194e-07 au
i 11.34592906242774 4.7909e-06 deg
node 40.05776339584044 2.087e-05 deg
peri 89.67845938728998 3.2124e-05 deg
M 288.7393007475775 2.6534e-05 deg
tp 2459785.286382366537
(2022-Jul-24.78638237)
0.00014694 TDB
period 1964.099414126859
5.38
2.1194e-05
5.803e-08
d
yr
n .1832901111882049 1.9778e-09 deg/d
Q 3.387445044383945 2.4368e-08 au
  Orbit Determination Parameters
   # obs. used (total)      867  
   data-arc span      7790 days (21.33 yr)  
   first obs. used      1999-10-10  
   last obs. used      2021-02-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58327  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:41:36  

Additional Information
 Earth MOID = 1.79631 au 
 Jupiter MOID = 1.75285 au 
 T_jup = 3.193 
[ 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 14.57   n/a E2021B10  

91845 (1999 UT2)          Discovered 1999-Oct-19 by Kusnirak, P., Pravec, P. at Ondrejov
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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