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91862 (1999 US20)
Classification: Main-belt Asteroid          SPK-ID: 2091862
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 .1357478165340429 4.5028e-08  
a 3.001450170857365 1.6716e-08 au
q 2.594009863727748 1.4153e-07 au
i 2.131406103753179 4.1745e-06 deg
node 95.03026566235039 0.00010512 deg
peri 333.0269362925976 0.00010625 deg
M 22.57466790005594 1.383e-05 deg
tp 2459277.399385358954
(2021-Mar-03.89938536)
7.2903e-05 TDB
period 1899.306845203707
5.20
1.5867e-05
4.344e-08
d
yr
n .1895428329072277 1.5834e-09 deg/d
Q 3.408890477986982 1.8985e-08 au
  Orbit Determination Parameters
   # obs. used (total)      630  
   data-arc span      9601 days (26.29 yr)  
   first obs. used      1994-10-31  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50015  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:48:08  

Additional Information
 Earth MOID = 1.60805 au 
 Jupiter MOID = 1.87637 au 
 T_jup = 3.237 
[ 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 15.74   n/a E2021B10  

91862 (1999 US20)          Discovered 1999-Oct-31 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 US20 = 2001 CE10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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