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 ]  
99P/Kowal 1
Classification: Jupiter-family Comet          SPK-ID: 1000055
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
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 2-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 has stopped working because of a recent Java upgrade, here is a possible workaround.
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 2455380.5 (2010-Jul-03.0) TDB
Reference: JPL K072/22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2287716907957943 1.7652e-07  
a 6.150503689944444 3.2802e-07 AU
q 4.743442561550082 9.8682e-07 AU
i 4.332540940374086 1.8251e-05 deg
node 28.20833810963109 0.0001727 deg
peri 174.6153280631434 0.00020773 deg
M 80.84662334200382 7.7105e-05 deg
tp 2454129.308351261590
(2007-Jan-28.80835126)
0.0011481 JED
period 5571.401438009192
15.25
0.0004457
1.22e-06
d
yr
n .06461569930036085 5.1691e-09 deg/d
Q 7.557564818338808 4.0306e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      7082 days (19.39 yr)  
   first obs. used      1991-02-21  
   last obs. used      2010-07-13  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .77554  
   data source      ORB  
   producer      Alan B. Chamberlin  
   solution date      2010-Aug-31 09:17:07  

Additional Information
 Earth MOID = 3.74115 AU 
 T_jup = 2.957 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 5.5 mag 0.8 K072/22 from 301 observations, assumed slope, autocmod 2.4a
comet total magnitude slope K1 14.   n/a K072/22 autocmod 2.4a
comet nuclear magnitude M2 11.5 mag 0.8 K072/22 from 149 observations, autocmod 2.4a
comet nuclear magnitude slope K2 5.   n/a K072/22 autocmod 2.4a
comet nuclear phase coefficient PC 0.03   n/a K072/22 autocmod 2.4a
diameter diameter 10.2 km n/a Scotti,J (1994) BAAS 26:1375  

99P/Kowal 1          Discovered 1977-Apr-24 by Kowal, Charles T. at Palomar Mountain Observatory, California (675)
discovered on plate/photo taken on discovery date as well as 4/25
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1991.8   99P/1991 D2   1992 VI   1991i 
 1976.6   99P/1977 H2   1977 III   1977f 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-22 00:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin