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 ]  
166P/NEAT
Classification: Chiron-type Comet          SPK-ID: 1000356
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2452819.5 (2003-Jun-29.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3831014579229702 8.5656e-06  
a 13.88283939168301 0.00022815 au
q 8.564303380618808 2.2699e-05 au
i 15.36840608994296 3.0314e-05 deg
node 64.48884992736954 7.0096e-05 deg
peri 321.8788868930617 0.0006374 deg
M 7.700857012594934 0.00044868 deg
tp 2452415.340832021408
(2002-May-20.84083202)
0.013971 TDB
period 18893.65043842897
51.73
0.46574
0.001275
d
yr
n .0190540203531962 4.697e-07 deg/d
Q 19.20137540274721 0.00031555 au
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      2742 days (7.51 yr)  
   first obs. used      2001-08-27  
   last obs. used      2009-02-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      2  
   norm. resid. RMS      .79049  
   source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:41:45  

Additional Information
 Earth MOID = 7.58249 au 
 Jupiter MOID = 3.69311 au 
 T_jup = 3.284 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 5.8   0.6 50 from 86 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 10.   n/a 50 autocmod 2.5c
comet nuclear magnitude M2 10.6   0.8 50 from 23 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 50 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 50 autocmod 2.5c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2002.4   166P/2001 T4       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Feb-25 16:07 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin