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44P/Reinmuth 2
Classification: Jupiter-family Comet          SPK-ID: 1000071
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2457375.5 (2015-Dec-19.0) TDB
Reference: JPL K105/7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4263587224185384 1.1618e-07  
a 3.693173969476632 8.2853e-08 au
q 2.118557034181173 4.2197e-07 au
i 5.895928616878742 1.652e-05 deg
node 286.4582015856911 0.000208 deg
peri 58.26864705864526 0.00025542 deg
M 37.48368459753332 3.5082e-05 deg
tp 2457105.578269351480
(2015-Mar-24.07826935)
0.00025737 JED
period 2592.376498650343
7.10
8.7236e-05
2.388e-07
d
yr
n .1388687176370505 4.6731e-09 deg/d
Q 5.26779090477209 1.1818e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.305409225907422E-9 4.939E-11
A2 [EST] 7.031809163752975E-10 9.797E-12
A3 [EST] 9.888294613993088E-10 5.056E-11
DT [EST] -257.828339709696 5.931
  Orbit Determination Parameters
   # obs. used (total)      787  
   data-arc span      20270 days (55.50 yr)  
   first obs. used      1960-05-22  
   last obs. used      2015-11-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .92941  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-Dec-09 11:27:39  

Additional Information
 Earth MOID = 1.11738 au 
 T_jup = 2.925 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 11.5 mag 1. K105/7 2 parameter fit from 493 observations, autocmod 2.6
comet total magnitude slope K1 10.   n/a K105/7 autocmod 2.6
comet nuclear magnitude M2 14.5 mag 0.8 K105/7 from 458 observations, autocmod 2.6
comet nuclear magnitude slope K2 5.   n/a K105/7 autocmod 2.6
comet nuclear phase coefficient PC 0.03   n/a K105/7 autocmod 2.6
diameter diameter 3.22 km n/a Lamy,P.L.;Toth,I.;Fernandez,Y.R.;Weaver,H.A. (2004) Comets II, pp. 223-264  

44P/Reinmuth 2          Discovered 1947-Sep-10 by Reinmuth, Karl at Heidelberg, Germany
Reference: comet.disLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 1993.9       1994 XVIII   1993g 
 1986.8       1987 XXVI   1987l 
 1979.7       1981 III   1980n 
 1972.6       1974 VI   1973g 
 1965.5       1967 XI   1967e 
 1958.4       1960 IX   1960c 
 1951.3   44P/1953 N1   1954 VI   1953d 
 1944.2   44P/1947 R1   1947 VII   1947j 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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