Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
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 ]  
(2013 XS21)
Classification: Apollo [NEO]          SPK-ID: 3654484
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4940212921915442 0.00029695  
a 1.914649845716974 0.0011062 au
q .9687720548415337 8.8428e-06 au
i 3.078281827742723 0.0013836 deg
node 80.44075862094029 0.00010917 deg
peri 341.0732365794862 0.0015125 deg
M 289.0318773360057 0.25056 deg
tp 2457591.262622663681
(2016-Jul-21.76262266)
0.83884 JED
period 967.6815671744879
2.65
0.83864
0.002296
d
yr
n .3720232070257947 0.00032241 deg/d
Q 2.860527636592415 0.0016527 au
  Orbit Determination Parameters
   # obs. used (total)      25  
   data-arc span      2 days  
   first obs. used      2013-12-12  
   last obs. used      2013-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      7  
   fit RMS      .56578  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 18:52:21  

Additional Information
 Earth MOID = .000641653 au 
 Jupiter MOID = 2.5009 au 
 T_jup = 3.771 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 29.4 mag n/a MPO279472  

[ 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
2013-Dec-11 15:25 < 00:01 Moon 0.00229973187391736 0.00229904984300571 0.00230041775877572 6.99142591302236 6.98938727964891 2456638.142041021 0.354058678404499 102.46193286181 6.0748356861815 59.9861629256981 46187.9784057536 T 3 CATAB v2.0c-linF95 2014-Jun-13 18:52:24 2014-Jun-13 18:52
2013-Dec-11 23:26 < 00:01 Earth 0.000484684610200484 0.000483762926379184 0.00048560561192299 8.26373600092214 7.5693222492281 2456638.476728701 0.0831767039253488 38.7394572521553 0.555445802616409 0.946017282568868 983.377041569468 T 3 CATAB v2.0c-linF95 2014-Jun-13 18:52:24 2014-Jun-13 18:52
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-12 16:09 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin