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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
351569 (2005 UU221)
Classification: Main-belt Asteroid          SPK-ID: 2351569
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04285637553227185 6.1431e-08  
a 3.165325377999469 6.1363e-08 au
q 3.029671004918093 2.1796e-07 au
i 8.211556506419347 7.0977e-06 deg
node 237.3363853550599 4.3115e-05 deg
peri 31.76355427581841 9.3533e-05 deg
M 268.143247483527 7.9005e-05 deg
tp 2459125.349216347499
(2020-Oct-02.84921635)
0.00044754 TDB
period 2056.960568589833
5.63
5.9814e-05
1.638e-07
d
yr
n .1750155085601865 5.0893e-09 deg/d
Q 3.300979751080845 6.3993e-08 au
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      5337 days (14.61 yr)  
   first obs. used      2004-08-25  
   last obs. used      2019-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48051  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 05:30:44  

Additional Information
 Earth MOID = 2.0172 au 
 Jupiter MOID = 1.73916 au 
 T_jup = 3.186 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456774.5 (2014-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04140330717364813 6.142e-08  
q 3.035001188582095 2.1779e-07 au
tp 2457066.018475533863
(2015-Feb-12.51847553)
0.00048279 TDB
node 237.3602003343235 4.3112e-05 deg
peri 31.60179851983221 9.6197e-05 deg
i 8.210817338455337 7.0975e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      5337 days (14.61 yr)  
   first obs. used      2004-08-25  
   last obs. used      2019-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48051  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 05:30:44  

Additional Information
 Jupiter MOID = 1.73916 au 
 T_jup = 3.186 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.772372605161184E-15 -1.291787206218628E-14 1.272632284526143E-12 1.42876508574363E-14 2.117415714325197E-13 -4.248795574080942E-15
q -1.291787206218628E-14 4.743187635715264E-14 -1.422409551671076E-11 -4.459225776796096E-14 -2.55654846175276E-12 1.784915105458433E-14
tp 1.272632284526143E-12 -1.422409551671076E-11 2.33084688114017E-7 7.273813372501364E-11 4.155826640017095E-8 -2.791899768488354E-11
node 1.42876508574363E-14 -4.459225776796096E-14 7.273813372501364E-11 1.858603156980658E-9 -1.826588561407329E-9 2.070091143156855E-11
peri 2.117415714325197E-13 -2.55654846175276E-12 4.155826640017095E-8 -1.826588561407329E-9 9.253954043290254E-9 -2.547085310436318E-11
i -4.248795574080942E-15 1.784915105458433E-14 -2.791899768488354E-11 2.070091143156855E-11 -2.547085310436318E-11 5.03743227762891E-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 15.5   n/a MPO434219  

351569 (2005 UU221)          Discovered 2005-Oct-25 by Spacewatch at Kitt Peak
Reference: 20130127/Numbers.arcLast Updated: 2013-01-31

[ show close-approach data ]
Alternate Designations
 2005 UU221 = 2011 UQ160 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-10 16:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin