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50P/Arend
Classification: Jupiter-family Comet          SPK-ID: 1000001
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
:
Orbital Elements at Epoch 2457380.5 (2015-Dec-24.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5302606367828769 1.6491e-07  
a 4.084807073353012 1.8813e-07 au
q 1.918794673501644 7.1648e-07 au
i 19.13920476453821 9.2045e-06 deg
node 355.1762509610829 2.3597e-05 deg
peri 49.22171663273186 4.8835e-05 deg
M 354.4859914589077 1.8945e-05 deg
tp 2457426.687098963182
(2016-Feb-08.18709896)
0.0001612 JED
period 3015.475130811404
8.26
0.00020832
5.703e-07
d
yr
n .1193841714433676 8.2476e-09 deg/d
Q 6.25081947320438 2.8789e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.685436287812149E-9 3.738E-11
A2 [EST] -1.531957538971717E-10 6.273E-13
  Orbit Determination Parameters
   # obs. used (total)      1498  
   data-arc span      23424 days (64.13 yr)  
   first obs. used      1951-10-01  
   last obs. used      2015-11-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .76214  
   data source      ORB  
   producer      Ryan S. Park  
   solution date      2015-Dec-14 12:38:59  

Additional Information
 Earth MOID = .978635 au 
 T_jup = 2.693 
[ 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 14.5 mag 0.8 44 2 parameter fit from 342 observations, autocmod 2.6
comet total magnitude slope K1 7.   n/a 44 autocmod 2.6
diameter diameter 1.9 km n/a Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H. (to be published)  

50P/Arend          Discovered 1951-Oct-04 by Arend, Silvio at Royal Observatory, Uccle, Belgium
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 
 1991.3       1991 VIII   1991u 
 1983.1       1983 VIII   1983q 
 1974.8       1975 VI   1975m 
 1966.6       1967 VI   1967l 
 1958.3   50P/1959 N1   1959 V   1959c 
 1950.1   50P/1951 T1   1951 X   1951j 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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