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 ]  
(2009 HU44)
Classification: Aten [NEO]          SPK-ID: 3458579
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6440846076499427 0.00042045  
a .8302422699008329 9.2343e-05 au
q .2954960032373571 0.00031621 au
i 6.63870569686476 0.0087747 deg
node 212.8725180282233 0.0029085 deg
peri 213.6319018130138 0.011712 deg
M 228.2806285239574 1.0303 deg
tp 2459301.600391398174
(2021-Mar-28.10039140)
0.80764 TDB
period 276.3157802492429
0.76
0.0461
0.0001262
d
yr
n 1.302857186351326 0.00021736 deg/d
Q 1.364988536564309 0.00015182 au
  Orbit Determination Parameters
   # obs. used (total)      63  
   data-arc span      21 days  
   first obs. used      2009-04-22  
   last obs. used      2009-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .51555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 02:43:03  

Additional Information
 Earth MOID = .00605364 au 
 Jupiter MOID = 3.9658 au 
 T_jup = 6.874 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454948.5 (2009-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6442019003792151 0.0004091  
q .2953616002302063 0.00031149 au
tp 2454880.968313487166
(2009-Feb-18.46831349)
0.030474 TDB
node 213.0375765676318 0.0015049 deg
peri 213.4560713075806 0.0078306 deg
i 6.644803576694034 0.0087031 deg
  Orbit Determination Parameters
   # obs. used (total)      63  
   data-arc span      21 days  
   first obs. used      2009-04-22  
   last obs. used      2009-05-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .51555  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 02:43:03  

Additional Information
 Jupiter MOID = 3.9658 au 
 T_jup = 6.874 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.673663350085686E-7 -1.274312754612637E-7 1.246680255360636E-5 6.155791530510434E-7 -3.202809293333095E-6 3.560361063820788E-6
q -1.274312754612637E-7 9.702539366288913E-8 -9.492059500173202E-6 -4.686953789925391E-7 2.438684299510382E-6 -2.710825704440743E-6
tp 1.246680255360636E-5 -9.492059500173202E-6 .0009286401152210331 4.585350537851951E-5 -.0002385543047622878 .0002652043824715349
node 6.155791530510434E-7 -4.686953789925391E-7 4.585350537851951E-5 2.264771081007921E-6 -1.178034471134964E-5 1.309651163729595E-5
peri -3.202809293333095E-6 2.438684299510382E-6 -.0002385543047622878 -1.178034471134964E-5 6.131833489441644E-5 -6.813391023000269E-5
i 3.560361063820788E-6 -2.710825704440743E-6 .0002652043824715349 1.309651163729595E-5 -6.813391023000269E-5 7.574468280642577E-5

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 22.6   n/a MPO158645  

[ 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 2021-Jun-23 17:41 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin