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JPL Small-Body Database Browser
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183618 (2003 US221)
Classification: Main-belt Asteroid          SPK-ID: 2183618
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2298359997945753 3.7815e-08  
a 2.368029630024384 1.6445e-08 au
q 1.823771172464552 9.2465e-08 au
i 3.282301161629041 4.6578e-06 deg
node 114.869169203411 0.00010065 deg
peri 191.86667887 0.00010155 deg
M 152.7051209552469 1.422e-05 deg
tp 2458035.913842738221
(2017-Oct-09.41384274)
5.1262e-05 TDB
period 1331.003278362924
3.64
1.3865e-05
3.796e-08
d
yr
n .2704726621280635 2.8174e-09 deg/d
Q 2.912288087584217 2.0224e-08 au
  Orbit Determination Parameters
   # obs. used (total)      288  
   data-arc span      9566 days (26.19 yr)  
   first obs. used      1992-10-01  
   last obs. used      2018-12-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66773  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 17:59:10  

Additional Information
 Earth MOID = .808196 au 
 Jupiter MOID = 2.34537 au 
 T_jup = 3.508 
[ 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 16.9   n/a MPO417992  

183618 (2003 US221)          Discovered 2003-Oct-22 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 2003 US221 = 2006 KB22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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