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/2004 Q2 (Machholz)
Classification: Comet          SPK-ID: 1000507
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2453456.5 (2005-Mar-27.0) TDB
Reference: JPL 101 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9994985940627301 7.6503e-07  
a 2403.324862711654 3.6674 au
q 1.20504135535195 2.7338e-07 au
i 38.58896260507633 8.0673e-06 deg
node 93.62296917232108 1.5414e-05 deg
peri 19.5045941814958 2.9225e-05 deg
M .0005110316957791374 1.1699e-06 deg
tp 2453395.411075063301
(2005-Jan-24.91107506)
2.4945e-05 TDB
period 43034538.09001382
117822.14
98503
269.7
d
yr
n 8.365373859642709E-6 1.9148e-08 deg/d
Q 4805.444684067956 7.3329 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.237532556383019E-8 1.516E-10
A2 [EST] -1.375092705516764E-9 1.797E-10
A3 [EST] -2.43584308271435E-9 1.02E-10
  Orbit Determination Parameters
   # obs. used (total)      3628  
   data-arc span      743 days (2.03 yr)  
   first obs. used      2004-08-27  
   last obs. used      2006-09-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   norm. resid. RMS      .58671  
   source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:43:28  

Additional Information
 Earth MOID = .249325 au 
 T_jup = 1.066 
[ 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 9.9   2. 101 from 346 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 13.   n/a 101 autocmod 2.5c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2005.1   C/2004 Q2       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-23 04:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin