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16P/Brooks 2
Classification: Jupiter-family Comet          SPK-ID: 1000008
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2454740.5 (2008-Oct-01.0) TDB
Reference: JPL K074/5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.5627722432037660649228 4.5687e-07  
a 3.3542546059217359655235 1.8085e-06 AU
q 1.4665732170705960690781 2.254e-06 AU
i 4.2580642568509210477145 1.7686e-05 deg
node 159.3684104561592 0.00024124 deg
peri 219.4791568971276 0.00023871 deg
M 27.49885781345255 8.2885e-05 deg
tp 2454569.102446434448
(2008-Apr-12.60244643)
0.00039741 JED
period 2243.84298803179
6.14
0.0018147
4.968e-06
d
yr
n .1604390333549041 1.2976e-07 deg/d
Q 5.241935994772875 2.8263e-06 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 4.648033080841563E-9 2.447E-10
A2 [EST] -1.317527574283039E-9 2.056E-12
  Orbit Determination Parameters
   # obs. used (total)      490  
   data-arc span      7997 days (21.89 yr)  
   first obs. used      1987-04-11  
   last obs. used      2009-03-03  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      2  
   fit RMS      .95298  
   data source      ORB  
   producer      Nick Mastrodemos  
   solution date      2009-Apr-10 09:34:11  

Additional Information
 Earth MOID = .471352 AU 
 T_jup = 2.875 
[ 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 12.8 mag 01. K074/5 2 parameter fit from 279 observations, autocmod 2.4a
comet total magnitude slope K1 11.   n/a K074/5 autocmod 2.4a

16P/Brooks 2          Discovered 1889-Jul-07 by Brooks, William R. at Geneva, New York
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1996.0       1994 XXIII   1994j 
 1989.8       1987 XXIV   1987m 
 1977.6       1980 IX   1980f 
 1971.4       1974 I   1973j 
 1959.1       1960 VI   1960h 
 1953.0       1953 V   1953b 
 1946.8       1946 IV   1946e 
 1940.7       1939 VII   1939g 
 1934.6       1932 VIII   1932m 
 1922.3       1925 IX   1925g 
 1910.0       1911 I   1910d 
 1903.8       1903 V   1903d 
 1897.7   16P/1896 M1   1896 VI   1896c 
 1891.6   16P/1889 N1   1889 V   1889d 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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