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332P/Ikeya-Murakami (2015 Y2)
Classification: Encke-type Comet          SPK-ID: 1003110
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455520.5 (2010-Nov-20.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4885908891896427 0.00023964  
a 3.087241138977169 0.0017176 au
q 1.578843245741469 0.00013931 au
i 9.377956220678412 0.00020791 deg
node 3.818488699831708 0.0014161 deg
peri 152.42957640 0.015323 deg
M 6.843118908382314 0.010136 deg
tp 2455482.837786429113
(2010-Oct-13.33778643)
0.024416 TDB
period 1981.318323858334
5.42
1.6535
0.004527
d
yr
n .1816972041620003 0.00015163 deg/d
Q 4.59563903221287 0.0025568 au
  Orbit Determination Parameters
   # obs. used (total)      385  
   data-arc span      80 days  
   first obs. used      2010-11-03  
   last obs. used      2011-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      6  
   norm. resid. RMS      .55751  
   source      ORB  
   producer      Davide Farnocchia  
   solution date      2017-Jan-17 16:14:01  

Additional Information
 Earth MOID = .595936 au 
 Jupiter MOID = .453759 au 
 T_jup = 3.012 
 Use 332P-c orbit 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 5.742686377309086E-8 3.317340299415961E-8 5.815548211254537E-6 3.359090005407879E-7 3.644347681204128E-6 -3.607898095579119E-8
q 3.317340299415961E-8 1.940854891558362E-8 3.400575080633395E-6 1.956146994149803E-7 2.134050447610658E-6 -2.048799187826588E-8
tp 5.815548211254537E-6 3.400575080633395E-6 .0005961535568264833 3.427124366878484E-5 .0003740809487783983 -3.592047435739572E-6
node 3.359090005407879E-7 1.956146994149803E-7 3.427124366878484E-5 2.005352511390133E-6 2.146662972902742E-5 -2.239898995737189E-7
peri 3.644347681204128E-6 2.134050447610658E-6 .0003740809487783983 2.146662972902742E-5 .0002348005866446926 -2.231755117811341E-6
i -3.607898095579119E-8 -2.048799187826588E-8 -3.592047435739572E-6 -2.239898995737189E-7 -2.231755117811341E-6 4.32256330027722E-8

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 5.2   1. 22 from 106 observations, assumed slope, autocmod 2.6g
comet total magnitude slope K1 22.   n/a 22 autocmod 2.6g
comet nuclear magnitude M2 12.5   1. 22 from 197 observations, autocmod 2.6g
comet nuclear magnitude slope K2 5.   n/a 22 autocmod 2.6g
comet nuclear phase coefficient PC 0.03   n/a 22 autocmod 2.6g

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2016.2   332P/2015 Y2       
 2010.8   332P/2010 V1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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