Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2301337839488061 3.7098e-08  
a 2.367379713257196 1.5451e-08 au
q 1.822565661801678 9.1512e-08 au
i 3.282559980947274 4.313e-06 deg
node 114.8709357461417 9.2956e-05 deg
peri 191.9084564889651 9.3759e-05 deg
M 260.8652032647785 1.4272e-05 deg
tp 2459366.873395172488
(2021-Jun-01.37339517)
5.4455e-05 TDB
period 1330.455365882997
3.64
1.3025e-05
3.566e-08
d
yr
n .2705840490643405 2.6491e-09 deg/d
Q 2.912193764712715 1.9007e-08 au
  Orbit Determination Parameters
   # obs. used (total)      316  
   data-arc span      10061 days (27.55 yr)  
   first obs. used      1992-10-01  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64393  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 04:39:52  

Additional Information
 Earth MOID = .80779 au 
 Jupiter MOID = 2.34798 au 
 T_jup = 3.509 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457117.5 (2015-Apr-05.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2310815328908474 3.7197e-08  
q 1.819920741813375 9.1791e-08 au
tp 2456704.363313369420
(2014-Feb-15.86331337)
4.6595e-05 TDB
node 114.9241810140201 9.2856e-05 deg
peri 191.6558930144046 9.3647e-05 deg
i 3.284100080872016 4.3171e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      316  
   data-arc span      10061 days (27.55 yr)  
   first obs. used      1992-10-01  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64393  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 04:39:52  

Additional Information
 Jupiter MOID = 2.34798 au 
 T_jup = 3.509 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.383645236528304E-15 -3.387650343065191E-15 -1.819525550473537E-14 -5.897436680779841E-15 1.097583312242368E-15 5.877507583247119E-16
q -3.387650343065191E-15 8.42550623239923E-15 5.981485733213916E-14 1.318485862368016E-14 1.084593799280069E-14 -1.225352878011532E-15
tp -1.819525550473537E-14 5.981485733213916E-14 2.171120634561004E-9 -2.163350741547973E-11 5.972292037673206E-10 -4.360912073485524E-13
node -5.897436680779841E-15 1.318485862368016E-14 -2.163350741547973E-11 8.622179980886614E-9 -8.613432327731645E-9 -8.701312518856582E-12
peri 1.097583312242368E-15 1.084593799280069E-14 5.972292037673206E-10 -8.613432327731645E-9 8.769757348566006E-9 8.579513084892712E-12
i 5.877507583247119E-16 -1.225352878011532E-15 -4.360912073485524E-13 -8.701312518856582E-12 8.579513084892712E-12 1.86372139948893E-11

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-20 08:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin