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JPL Small-Body Database Browser
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112P/Urata-Niijima
Classification: Jupiter-family Comet          SPK-ID: 1000113
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2453722.5 (2005-Dec-18.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5864076323520622 1.0918e-07  
a 3.540983773707184 5.3895e-08 au
q 1.464523862770484 3.9624e-07 au
i 24.16791862512885 1.6932e-05 deg
node 31.92838562956634 2.6253e-05 deg
peri 21.46232067492236 6.3348e-05 deg
M 313.3168485864869 1.3813e-05 deg
tp 2454038.103635364268
(2006-Oct-29.60363536)
9.6965e-05 TDB
period 2433.796890118441
6.66
5.5565e-05
1.521e-07
d
yr
n .1479170268733808 3.377e-09 deg/d
Q 5.617443684643884 8.55e-08 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 6.553597873081227E-11 4.317E-13
  Orbit Determination Parameters
   # obs. used (total)      411  
   data-arc span      12070 days (33.05 yr)  
   first obs. used      1986-10-04  
   last obs. used      2019-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66694  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2019-Nov-07 14:40:09  

Additional Information
 Earth MOID = .491374 au 
 Jupiter MOID = .303903 au 
 T_jup = 2.689 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 17.4   1. 26 2 parameter fit from 127 observations, autocmod 2.8
comet total magnitude slope K1 5.5   n/a 26 autocmod 2.8
diameter diameter 1.8 km n/a DASTCOM value unverified

112P/Urata-Niijima          Discovered 1986-Oct-30 by Urata, T. and Niijima, T. at Ojima
discovered on plate/photo taken on discovery date
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1993.5   112P/1993 U1   1993 XII   1993q 
 1986.8   112P/1986 UD   1986 XVI   1986o 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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