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 ]  
C/2010 X1 (Elenin)
Classification: Hyperbolic Comet          SPK-ID: 1003113
Ephemeris | Orbit Diagram | Orbital Elements | 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.


Orbital Elements at Epoch 2455651.5 (2011-Mar-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000067251452369 1.8497e-06  
a -7173.388484905965 197.29 au
q .4824207940167428 2.655e-06 au
i 1.83956811421481 4.5064e-05 deg
node 323.2351474030079 0.00089743 deg
peri 343.7981179505746 0.00089507 deg
M -.0002655942158359592 1.0957e-05 deg
tp 2455815.219747320076
(2011-Sep-10.71974732)
0.0003604 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.62224911889655E-6 6.6925e-08 deg/d
Q n/a n/a au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -4.779002741230586E-8 1.175E-8
A2 [EST] 6.325626323697817E-8 7.967E-9
  Orbit Determination Parameters
   # obs. used (total)      2235  
   data-arc span      271 days  
   first obs. used      2010-12-10  
   last obs. used      2011-09-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .59392  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:31:47  

Additional Information
 Earth MOID = .0306307 au 
 Jupiter MOID = .148355 au 
 T_jup = 0.861 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 12.6   0.8 39 2 parameter fit from 353 observations, autocmod 2.9c
comet total magnitude slope K1 6.25   n/a 39 autocmod 2.9c

[ 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
2011-Oct-16 19:10 00:23 Earth 0.233340021298286 0.233274384917074 0.233405657915741 23.9492069019876 23.9487301019172 2455851.298784448 23.0916124802374 3293.99178942699 217.275335451599 6.44887228861714 39404.6529729163 T 39 CATAB v2.0g-lin.ifort 2021-Apr-15 23:31:55 2021-Apr-15 23:31
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-25 14:13 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin