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 
[ show covariance matrix ]

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1918-Sep-20 08:19 00:06 Jupiter 1.95877971356581 1.95877877026953 1.95878065686398 3.5574159999607 3.43370957676495 2421856.846351984 5.50886071762644 191.77922282009 32.6990590792993 -87.0865964388199 1628238.49653514 T 9 CATAB v2.0f-lin.ifort 2020-May-21 20:02:02 2020-May-21 20:02
1928-Nov-20 06:54 00:05 Jupiter 1.90972334841975 1.90972251477141 1.90972418207014 2.85464802089884 2.69480096967214 2425570.787193683 5.37494198544288 302.328249077225 24.6747239732244 82.9607697415097 1810006.30625939 T 9 CATAB v2.0f-lin.ifort 2020-May-21 20:02:02 2020-May-21 20:02
1939-Feb-13 12:50 00:04 Jupiter 1.95121215716628 1.95121131187294 1.95121300246604 4.40709927519149 4.30747288674525 2429308.034858292 4.1991183762639 311.924434494384 31.633253043776 -86.7412753744854 2360532.4792414 T 9 CATAB v2.0f-lin.ifort 2020-May-21 20:02:02 2020-May-21 20:02
2001-Jun-30 10:23 < 00:01 Jupiter 1.93466085021158 1.93466013127191 1.93466156915126 3.34425060725769 3.21066709315434 2452090.932427559 0.894965769112933 86.4246335102238 32.4392560558174 84.8140146809875 2300708.22424837 T 9 CATAB v2.0f-lin.ifort 2020-May-21 20:02:02 2020-May-21 20:02
2011-Aug-27 14:21 < 00:01 Jupiter 1.91270880505045 1.91270800146298 1.91270960863782 3.03722079126531 2.88773815512294 2455801.097808586 0.445830638886436 53.0239941754886 25.3541507188292 70.2336649056487 1714439.90703094 T 9 CATAB v2.0f-lin.ifort 2020-May-21 20:02:02 2020-May-21 20:02
2021-Nov-30 20:16 < 00:01 Jupiter 1.98400816020734 1.98400748175348 1.98400883866109 4.62287494927031 4.52958308963777 2459549.344253656 0.426326133306924 66.6285892243307 31.3056639235415 86.630523445768 2540228.52781801 T 9 CATAB v2.0f-lin.ifort 2020-May-21 20:02:02 2020-May-21 20:02
2084-Apr-09 21:36 00:04 Jupiter 1.92590976483136 1.92590900831541 1.92591052134731 3.17283062493709 3.03104709441721 2482325.399748450 4.04492846811735 90.7766504865745 38.1876811971296 -89.3639315836449 1395795.98460955 T 9 CATAB v2.0f-lin.ifort 2020-May-21 20:02:02 2020-May-21 20:02
2094-Jun-04 01:43 00:05 Jupiter 1.92572138022735 1.92572055807874 1.92572220237728 3.28956192580988 3.15301822540511 2486032.571350486 4.70428769876121 286.986999297402 29.9700352448858 87.3298009624736 1726776.81038514 T 9 CATAB v2.0f-lin.ifort 2020-May-21 20:02:02 2020-May-21 20:02
2167-Jan-17 18:18 00:09 Jupiter 1.91844155908894 1.91844074682777 1.91844237135065 3.01157809016463 2.8612183988954 2512557.262355073 9.08472329928176 272.879736462793 38.5508039164169 -80.7275003225151 1680938.99657206 T 9 CATAB v2.0f-lin.ifort 2020-May-21 20:02:02 2020-May-21 20:02
2177-Mar-14 11:07 00:09 Jupiter 1.94040063650926 1.94039961398249 1.94040165906614 3.56805251154712 3.4435388673769 2516265.962984269 9.43153926812575 587.378728342875 31.5316186512512 89.2022263967943 1805339.66296088 T 9 CATAB v2.0f-lin.ifort 2020-May-21 20:02:02 2020-May-21 20:02

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-31 23:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin