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 ]  
243618 (1999 JU61)
Classification: Mars-crossing Asteroid          SPK-ID: 2243618
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3610763096040875 4.8018e-08  
a 2.435885569623849 8.1059e-09 au
q 1.556344997526219 1.1997e-07 au
i 7.776698669917703 6.4127e-06 deg
node 238.0797441893634 3.0173e-05 deg
peri 53.39718468177856 3.1708e-05 deg
M 167.1608919342335 8.3554e-06 deg
tp 2458355.713509168316
(2018-Aug-25.21350917)
3.0375e-05 TDB
period 1388.621070475808
3.80
6.9313e-06
1.898e-08
d
yr
n .2592499909832469 1.2941e-09 deg/d
Q 3.315426141721479 1.1033e-08 au
  Orbit Determination Parameters
   # obs. used (total)      635  
   data-arc span      7555 days (20.68 yr)  
   first obs. used      1999-04-30  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48941  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 02:52:33  

Additional Information
 Earth MOID = .556222 au 
 Jupiter MOID = 1.93644 au 
 T_jup = 3.400 
[ 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 16.0   n/a MPO450092  

243618 (1999 JU61)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

[ 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
1978-Jul-19 18:24 < 00:01 Jupiter 1.96376973770321 1.9637693288596 1.96377014655665 1.57357184263741 1.27022786099583 2443709.266418710 0.501639258162321 492.458742696089 165.521459277376 85.3515992734594 1117379.60960775 T 18 CATAB v2.0f-lin.ifort 2020-Jan-30 02:52:51 2020-Jan-30 02:52
1989-Sep-18 00:50 < 00:01 Jupiter 1.95250306078366 1.95250249922894 1.95250362234872 2.02014074775531 1.7925795110628 2447787.534723896 0.370736107422707 338.894577367876 49.2298245282018 -82.9259065596135 1249520.37348935 T 18 CATAB v2.0f-lin.ifort 2020-Jan-30 02:52:51 2020-Jan-30 02:52
2085-Jan-03 12:17 < 00:01 Jupiter 1.93402837628271 1.93402790713007 1.93402884544173 1.7203330634217 1.44347863033655 2482594.011827677 0.844143566213082 353.95331990907 114.779172122805 -83.1640136682817 1142144.84288455 T 18 CATAB v2.0f-lin.ifort 2020-Jan-30 02:52:51 2020-Jan-30 02:52
2180-Apr-23 14:02 00:02 Jupiter 1.97507616528771 1.97507517807055 1.97507715250992 1.37296138303924 1.01356386917122 2517402.084383796 1.95659598059483 816.804629701801 271.269940668303 66.0737667595682 1261311.8764392 T 18 CATAB v2.0f-lin.ifort 2020-Jan-30 02:52:51 2020-Jan-30 02:52
2191-Jun-23 14:06 00:02 Jupiter 1.96116131342516 1.96116069049687 1.96116193638588 1.87446513956911 1.62782759388982 2521480.087270480 2.06681013008823 556.104736089859 87.4914975413288 -89.1649649634231 1048150.60143622 T 18 CATAB v2.0f-lin.ifort 2020-Jan-30 02:52:51 2020-Jan-30 02:52
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-23 14:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin