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 ]  
129974 (1999 US33)
Classification: Main-belt Asteroid          SPK-ID: 2129974
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03797372751426403 8.1394e-08  
a 2.801172345578991 2.5404e-08 au
q 2.694801390207483 2.3024e-07 au
i 4.258322032198261 6.5164e-06 deg
node 35.5801914879145 7.4903e-05 deg
peri 195.1432566635905 0.00010739 deg
M 302.101007289008 8.0161e-05 deg
tp 2459275.908081258047
(2021-Mar-02.40808126)
0.00038228 TDB
period 1712.411643287087
4.69
2.3295e-05
6.378e-08
d
yr
n .210229824943818 2.8598e-09 deg/d
Q 2.907543300950499 2.6368e-08 au
  Orbit Determination Parameters
   # obs. used (total)      316  
   data-arc span      7416 days (20.30 yr)  
   first obs. used      1999-10-14  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56162  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:06:37  

Additional Information
 Earth MOID = 1.68438 au 
 Jupiter MOID = 2.06381 au 
 T_jup = 3.320 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO453778  

129974 (1999 US33)          Discovered 1999-Oct-31 by Spacewatch at Kitt Peak
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-22 09:58 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin