Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 2454891.5 (2009-Mar-01.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.5294720134830936952852 2.1121e-07  
a 4.0884590329145389375753 2.1323e-07 AU
q 1.9237343967141360412398 9.0424e-07 AU
i 19.158363566038730141372 1.1562e-05 deg
node 355.3246436489589 3.7853e-05 deg
peri 49.03440507779702 0.0001192 deg
M 57.91719917293964 2.6431e-05 deg
tp 2454405.716283330827
(2007-Nov-01.21628333)
0.00022749 JED
period 3019.519943958402
8.27
0.00023622
6.467e-07
d
yr
n .1192242497753012 9.3271e-09 deg/d
Q 6.253183669114942 3.2613e-07 AU

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -6.025689626519869E-10 2.983E-10
A2 [EST] -1.655108847929911E-10 1.909E-12
  Orbit Determination Parameters
   # obs. used (total)      1113  
   data-arc span      15168 days (41.53 yr)  
   first obs. used      1967-09-08  
   last obs. used      2009-03-19  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      0  
   fit RMS      .70395  
   data source      ORB  
   producer      Nick Mastrodemos  
   solution date      2009-Apr-02 17:15:03  

Additional Information
 Earth MOID = .981863 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 12.1 mag 1. 42 from 194 observations, assumed slope, autocmod 2.4a
comet total magnitude slope K1 14.   n/a 42 autocmod 2.4a
comet nuclear magnitude M2 15.5 mag 0.6 42 from 816 observations, autocmod 2.4a
comet nuclear magnitude slope K2 5.   n/a 42 autocmod 2.4a
comet nuclear phase coefficient PC 0.03   n/a 42 autocmod 2.4a
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 
 1983.0       1983 VIII   1983q 
 1974.8       1975 VI   1975m 
 1966.5       1967 VI   1967l 
 1958.2   50P/1959 N1   1959 V   1959c 
 1950.0   50P/1951 T1   1951 X   1951j 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-22 08:03 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin