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 ]  
305981 (2009 HC103)
Classification: Main-belt Asteroid          SPK-ID: 2305981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05096958384147917 5.068e-08  
a 3.124718246506128 3.9071e-08 au
q 2.965452657859834 1.6664e-07 au
i 11.6337713149577 6.1885e-06 deg
node 131.7450592042512 3.9112e-05 deg
peri 148.4796450562922 9.284e-05 deg
M 315.1252749897558 8.3301e-05 deg
tp 2459251.986120586726
(2021-Feb-06.48612059)
0.00046593 TDB
period 2017.505475310514
5.52
3.784e-05
1.036e-07
d
yr
n .1784381774451405 3.3468e-09 deg/d
Q 3.283983835152422 4.1063e-08 au
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      6677 days (18.28 yr)  
   first obs. used      2002-01-13  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64229  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:02:01  

Additional Information
 Earth MOID = 1.95552 au 
 Jupiter MOID = 1.92449 au 
 T_jup = 3.181 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457440.5 (2016-Feb-22.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04974182532347418 5.0744e-08  
q 2.971084120351484 1.6662e-07 au
tp 2457231.560912801039
(2015-Jul-28.06091280)
0.00048627 TDB
node 131.765968727397 3.9116e-05 deg
peri 148.1327785772458 9.4685e-05 deg
i 11.63122329952522 6.1874e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      6677 days (18.28 yr)  
   first obs. used      2002-01-13  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64229  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:02:01  

Additional Information
 Jupiter MOID = 1.92449 au 
 T_jup = 3.181 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.574964032263476E-15 -8.241873688657135E-15 -3.308770601918272E-12 -5.328989591452092E-15 -5.528332442816746E-13 -4.763160189825368E-15
q -8.241873688657135E-15 2.776278433047486E-14 5.594384820286768E-12 2.894958561401745E-14 8.936559515374289E-13 1.931346558006858E-14
tp -3.308770601918272E-12 5.594384820286768E-12 2.364544287798622E-7 5.469141172464494E-11 4.204621498069389E-8 1.741046613131753E-11
node -5.328989591452092E-15 2.894958561401745E-14 5.469141172464494E-11 1.530035731210344E-9 -1.48801935877859E-9 7.733783087474842E-11
peri -5.528332442816746E-13 8.936559515374289E-13 4.204621498069389E-8 -1.48801935877859E-9 8.965295673639224E-9 -7.232554778086972E-11
i -4.763160189825368E-15 1.931346558006858E-14 1.741046613131753E-11 7.733783087474842E-11 -7.232554778086972E-11 3.828365311362036E-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 15.6   n/a MPO433971  

305981 (2009 HC103)          Discovered 2009-Apr-17 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2009 HC103 = 2008 CY81 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-30 15:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin