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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
21233 (1995 UU3)
Classification: Main-belt Asteroid          SPK-ID: 2021233
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1988711451942882 3.4877e-08  
a 2.691398097856352 1.1345e-08 au
q 2.15615667596193 9.5888e-08 au
i 4.024455674490081 4.661e-06 deg
node 28.79607132802973 5.0755e-05 deg
peri 49.38646638448098 5.1998e-05 deg
M 270.1814646509925 1.1557e-05 deg
tp 2459798.872977406636
(2022-Aug-07.37297741)
5.2868e-05 TDB
period 1612.743642540253
4.42
1.0198e-05
2.792e-08
d
yr
n .22322208595593 1.4115e-09 deg/d
Q 3.226639519750774 1.3602e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1335  
   data-arc span      9476 days (25.94 yr)  
   first obs. used      1995-08-29  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51402  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:41:24  

Additional Information
 Earth MOID = 1.17398 au 
 Jupiter MOID = 2.05265 au 
 T_jup = 3.340 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457013.5 (2014-Dec-22.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2028531213608532 3.5033e-08  
q 2.140880889360787 9.6635e-08 au
tp 2456579.968888200196
(2013-Oct-14.46888820)
4.5473e-05 TDB
node 29.04621081874195 5.0716e-05 deg
peri 49.15276631550653 5.1879e-05 deg
i 4.030040776538299 4.6663e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1335  
   data-arc span      9476 days (25.94 yr)  
   first obs. used      1995-08-29  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51402  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:41:24  

Additional Information
 Jupiter MOID = 2.05265 au 
 T_jup = 3.340 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.227286802007496E-15 -3.371910436515733E-15 -4.226196178157406E-13 2.422396575163173E-15 -1.15189707149816E-13 -1.503148893465651E-15
q -3.371910436515733E-15 9.338414335495287E-15 1.164579182327867E-12 -8.058552244056895E-15 3.226500059100117E-13 4.426827829987705E-15
tp -4.226196178157406E-13 1.164579182327867E-12 2.067782879899392E-9 2.869968890259819E-12 5.060249389274801E-10 4.552093349937723E-13
node 2.422396575163173E-15 -8.058552244056895E-15 2.869968890259819E-12 2.57210640770399E-9 -2.564731471311205E-9 -8.128190890173482E-12
peri -1.15189707149816E-13 3.226500059100117E-13 5.060249389274801E-10 -2.564731471311205E-9 2.691388767787403E-9 8.275043249310767E-12
i -1.503148893465651E-15 4.426827829987705E-15 4.552093349937723E-13 -8.128190890173482E-12 8.275043249310767E-12 2.17745814746589E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.48   n/a MPO636383  
diameter diameter 6.997 km 0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21233 (1995 UU3)          Discovered 1995-Oct-20 by Kobayashi, T. at Oizumi
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1995 UU3 = 1997 EG56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-21 00:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin