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 ]  
(2002 AC9)
Classification: Apollo [NEO, PHA]          SPK-ID: 3102752
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5604421680302401 1.9153e-07  
a 1.70418966077363 3.8414e-08 au
q .7490899125549375 3.4264e-07 au
i 2.277806468557784 3.1905e-05 deg
node 2.505215670212562 0.0011888 deg
peri 28.55906497007886 0.0011758 deg
M 307.793273298985 5.8206e-05 deg
tp 2458718.341776127677
(2019-Aug-22.84177613)
0.00013523 TDB
period 812.5971898011899
2.22
2.7475e-05
7.522e-08
d
yr
n .4430239293444734 1.4979e-08 deg/d
Q 2.659289408992323 5.9943e-08 au
  Orbit Determination Parameters
   # obs. used (total)      51  
   data-arc span      3132 days (8.57 yr)  
   first obs. used      2002-01-09  
   last obs. used      2010-08-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60911  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:15:34  

Additional Information
 Earth MOID = .0288016 au 
 Jupiter MOID = 2.78931 au 
 T_jup = 4.000 
[ hide covariance matrix ]
Orbital Elements at Epoch 2452724.5 (2003-Mar-26.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5602646612536547 1.9246e-07  
q .7485515887072508 3.4633e-07 au
tp 2453033.624058672228
(2004-Jan-29.12405867)
9.7903e-05 TDB
node 2.900104421942921 0.0011857 deg
peri 28.10360791304033 0.0011734 deg
i 2.284442045507026 3.1866e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      51  
   data-arc span      3132 days (8.57 yr)  
   first obs. used      2002-01-09  
   last obs. used      2010-08-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60911  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:15:34  

Additional Information
 Jupiter MOID = 2.78931 au 
 T_jup = 4.000 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.704194574952043E-14 -6.665091481683539E-14 1.674281655365327E-11 1.668268978789552E-11 -1.11541445995334E-11 -1.992856558323993E-12
q -6.665091481683539E-14 1.199444662682798E-13 -3.022365307607199E-11 -3.012928346494584E-11 2.014560325988012E-11 3.60145388886954E-12
tp 1.674281655365327E-11 -3.022365307607199E-11 9.584977863060092E-9 3.07272136418578E-8 -2.720918213044746E-8 -1.444299350570579E-9
node 1.668268978789552E-11 -3.012928346494584E-11 3.07272136418578E-8 1.40598512449592E-6 -1.390702027738062E-6 -3.499215017954364E-8
peri -1.11541445995334E-11 2.014560325988012E-11 -2.720918213044746E-8 -1.390702027738062E-6 1.376826268390432E-6 3.440292206191664E-8
i -1.992856558323993E-12 3.60145388886954E-12 -1.444299350570579E-9 -3.499215017954364E-8 3.440292206191664E-8 1.015431742381238E-9

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 21.0   n/a MPO181631  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-16 10:30 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin