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 ]  
9259 Janvanparadijs (2189 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2009259
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1208348969753665 3.6673e-08  
a 2.616468232202283 1.7329e-08 AU
q 2.3003075629248 9.8528e-08 AU
i 1.148182889215402 4.1117e-06 deg
node 274.8259702317267 0.00031528 deg
peri 359.1787560292419 0.00031609 deg
M 341.8170843081405 2.8261e-05 deg
tp 2457078.578713767598
(2015-Feb-25.07871377)
0.00012151 JED
period 1545.865219455393
4.23
1.5358e-05
4.205e-08
d
yr
n .23287929340103 2.3136e-09 deg/d
Q 2.932628901479765 1.9423e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1076  
   data-arc span      14853 days (40.67 yr)  
   first obs. used      1973-09-19  
   last obs. used      2014-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50074  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:29:12  

Additional Information
 Earth MOID = 1.28542 AU 
 T_jup = 3.396 
[ 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
absolute magnitude H 14.3 mag n/a MPO253428  

9259 Janvanparadijs           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Jan van Paradijs (1946-1999), professor at the universities of Amsterdam and Alabama, was a pioneer researcher on issues of high-energy astrophysics. His recognition of the first optical counterpart to a \gamma -ray burst led to improved understanding of the physics of these events, their source environment and typical distances.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19991123/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 2189 T-2 = 1993 HJ6 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Mar-07 01:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin