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JPL Small-Body Database Browser
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169P/NEAT
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1001656
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2454405.5 (2007-Nov-01.0) TDB
Reference: JPL 124 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7668594528813818 1.5475e-08  
a 2.604330237990576 1.0617e-08 au
q .6071749765626839 3.839e-08 au
i 11.30248657910837 5.7236e-06 deg
node 176.2132135046318 3.1326e-05 deg
peri 217.9787791565537 3.1506e-05 deg
M 181.654687157076 1.0615e-06 deg
tp 2455166.004356459450
(2009-Nov-30.50435646)
8.1869e-06 TDB
period 1535.120626167129
4.20
9.3874e-06
2.57e-08
d
yr
n .234509258662522 1.434e-09 deg/d
Q 4.601485499418468 1.8759e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1213  
   data-arc span      11390 days (31.18 yr)  
   first obs. used      1989-03-07  
   last obs. used      2020-05-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55473  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-26 12:44:58  

Additional Information
 Earth MOID = .142371 au 
 Jupiter MOID = .975032 au 
 T_jup = 2.888 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 2.394612619668417E-16 -5.935923551997548E-16 8.590563984914054E-14 -3.878216925561481E-14 6.962212316377678E-14 -6.085169318629683E-15
q -5.935923551997548E-16 1.473793426256687E-15 -2.055867080063962E-13 9.195248708328466E-14 -1.68318144818375E-13 1.337277415916632E-14
tp 8.590563984914054E-14 -2.055867080063962E-13 6.70247873386584E-11 -3.748137370247298E-11 5.835517279410921E-11 -1.062037751541392E-13
node -3.878216925561481E-14 9.195248708328466E-14 -3.748137370247298E-11 9.813058319793773E-10 -9.792460238675689E-10 -1.273340988574594E-10
peri 6.962212316377678E-14 -1.68318144818375E-13 5.835517279410921E-11 -9.792460238675689E-10 9.926394653280933E-10 1.282081599834036E-10
i -6.085169318629683E-15 1.337277415916632E-14 -1.062037751541392E-13 -1.273340988574594E-10 1.282081599834036E-10 3.275925592408855E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 16.5   1. 124 2 parameter fit from 300 observations, autocmod 2.8
comet total magnitude slope K1 5.5   n/a 124 autocmod 2.8
rotation period rot_per 8.369 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2006) Minor Planet Bull. 33, 35-39.]

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2001.5   169P/2002 EX12       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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