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 ]  
16958 Klaasen (1998 PF)
Classification: Mars-crossing Asteroid          SPK-ID: 2016958
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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2885571415742574 6.8942e-08  
a 2.008052348731919 1.4008e-08 AU
q 1.428614502850363 1.3527e-07 AU
i 41.95658579112686 1.0605e-05 deg
node 152.4095056219906 9.8888e-06 deg
peri 53.54074642989741 2.8267e-05 deg
M 349.6022038194009 1.4984e-05 deg
tp 2457030.519245448635
(2015-Jan-08.01924545)
4.3231e-05 JED
period 1039.347970839531
2.85
1.0875e-05
2.977e-08
d
yr
n .3463710038411975 3.6243e-09 deg/d
Q 2.587490194613475 1.805e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      598  
   data-arc span      21016 days (57.54 yr)  
   first obs. used      1955-04-24  
   last obs. used      2012-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50595  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 21:42:43  

Additional Information
 Earth MOID = .55044 AU 
 T_jup = 3.476 
[ 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 14.8 mag n/a MPO244337  

16958 Klaasen           Discovered 1998 Aug. 2 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Kenneth P. Klaasen (b. 1946), a geomorphologist and expert in scientific operations of spacecraft at the Jet Propulsion Laboratory, has designed observational sequences for numerous planetary missions, most recently for Deep Impact, for which he has also overseen instrument calibration.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050721/MPCPages.arcLast Updated: 2005-07-21

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-22 15:23 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin