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22750 (1998 US20)
Classification: Main-belt Asteroid          SPK-ID: 2022750
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04820267116378654 3.4322e-08  
a 2.467183981032199 8.8312e-09 au
q 2.348259122893943 8.4703e-08 au
i 1.754612020078619 3.7888e-06 deg
node 188.3657867296996 0.0001359 deg
peri 235.2285592644813 0.00014289 deg
M 240.3580062615045 4.4769e-05 deg
tp 2459670.915770189194
(2022-Apr-01.41577019)
0.00017669 TDB
period 1415.470203867227
3.88
7.5999e-06
2.081e-08
d
yr
n .2543324465724808 1.3656e-09 deg/d
Q 2.586108839170457 9.2569e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1475  
   data-arc span      10950 days (29.98 yr)  
   first obs. used      1990-09-17  
   last obs. used      2020-09-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52477  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:11:20  

Additional Information
 Earth MOID = 1.36093 au 
 Jupiter MOID = 2.54367 au 
 T_jup = 3.484 
[ 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 14.97   n/a E2021B10  

22750 (1998 US20)          Discovered 1998-Oct-29 by Korlevic, K. at Visnjan
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 US20 = 2000 EO60 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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