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
JPL Small-Body Database Browser
Search: [ help ]  
C/1996 B2 (Hyakutake)
Classification: Comet          SPK-ID: 1000131
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
[ switch to new HTML5 viewer ]

Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2450158.5 (1996-Mar-16.0) TDB
Reference: JPL 72 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9998986702212276 9.2685e-07  
a 2272.079439771763 20.789 au
q .2302293069854339 7.6629e-07 au
i 124.9226625944912 5.013e-05 deg
node 188.0452284985425 9.9117e-06 deg
peri 130.1740835084622 0.00013771 deg
M 359.9995777871475 5.7949e-06 deg
tp 2450204.894088137433
1.4391e-05 TDB
period 39557942.46665863
n 9.100574437192371E-6 1.249e-07 deg/d
Q 4543.92865023654 41.577 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.303845253882055E-8 4.706E-10
A2 [EST] 3.621508865039903E-10 8.391E-11
  Orbit Determination Parameters
   # obs. used (total)      978  
   data-arc span      306 days  
   first obs. used      1996-01-01  
   last obs. used      1996-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   norm. resid. RMS      .88913  
   source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:42:31  

Additional Information
 Earth MOID = .100969 au 
 T_jup = -0.338 
[ 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 7.3   0.8 72 from 45 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 11.   n/a 72 autocmod 2.5c
comet nuclear magnitude M2 11.1   0.001 72 from 5 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 72 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 72 autocmod 2.5c
diameter diameter 4.2 km n/a DASTCOM value unverified

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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
1996-Mar-25 07:02 < 00:01 Earth 0.10174412394873 0.101743735506575 0.101744512390891 57.240099325225 57.2396418112367 2450167.793211638 0.00345459079835458 19.3918008109261 8.38000227256187 -3.02136991799933 774899.551297089 T 72 CATAB v2.0e-lin.ifort 2017-Nov-30 18:55:32 2017-Nov-30 18:55

Alternate Designations
 1996.3   C/1996 B2       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
FirstGov 2020-Oct-28 18:08 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin