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 ]  
(2019 LY4)
Classification: Apollo [NEO]          SPK-ID: 3842871
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5664756210845286 0.00045802  
a 1.763730496664349 0.0017531 au
q .7646201681406877 4.7821e-05 au
i 26.99193393880245 0.014841 deg
node 254.7819125719346 1.826e-05 deg
peri 288.6217533065396 0.013455 deg
M 171.4085808873314 0.26329 deg
tp 2458593.141463227248
(2019-Apr-19.64146323)
0.018372 TDB
period 855.5526944977436
2.34
1.2756
0.003492
d
yr
n .420780627909003 0.00062736 deg/d
Q 2.762840825188011 0.0027462 au
  Orbit Determination Parameters
   # obs. used (total)      29  
   data-arc span      6 days  
   first obs. used      2019-06-06  
   last obs. used      2019-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .57765  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jun-17 04:42:18  

Additional Information
 Earth MOID = .000221091 au 
 Jupiter MOID = 2.73976 au 
 T_jup = 3.805 
[ show covariance matrix ]

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 27.8   .26625 MPO473681 autocmod 2.6q

[ 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
2016-Dec-21 02:27 1_23:05 Earth 0.27519293096614 0.243803296492101 0.316921381850522 23.8499369805396 23.8495310127815 2457743.602347055 2825.00378566084 3234952.78522722 165.936801086226 54.9616283706735 217552.734197744 T 1 CATAB v2.0e-lin.ifort 2019-Jun-17 04:42:22 2019-Jun-17 04:42
2019-Jun-05 22:42 < 00:01 Moon 0.00161189591088394 0.00161109312712951 0.0016126989884874 20.0818686068727 20.0808561218567 2458640.445628030 0.358149354845813 52.7549788050695 1.69922313972087 -40.6272869243982 99898.1411511785 T 1 CATAB v2.0e-lin.ifort 2019-Jun-17 04:42:22 2019-Jun-17 04:42
2019-Jun-06 01:30 < 00:01 Earth 0.000558898551095131 0.000557895125451994 0.000559901895386571 20.7354164400855 20.5042128272225 2458640.562578298 0.0785750519913474 48.8793920033322 1.20559792100001 0.98367446388483 1270.41354130039 T 1 CATAB v2.0e-lin.ifort 2019-Jun-17 04:42:22 2019-Jun-17 04:42
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-23 09:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin