Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
35643 (1998 KN55)
Classification: Main-belt Asteroid          SPK-ID: 2035643
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1368299178570374 3.3286e-08  
a 2.793302569278086 1.5704e-08 au
q 2.411095208173914 9.6566e-08 au
i 9.056274023501595 5.1575e-06 deg
node 176.8505124040656 2.4408e-05 deg
peri 280.3375552274162 3.1052e-05 deg
M 322.6950724229943 1.9072e-05 deg
tp 2458777.201037122820
(2019-Oct-20.70103712)
9.0734e-05 TDB
period 1705.200291111808
4.67
1.438e-05
3.937e-08
d
yr
n .2111188942885275 1.7804e-09 deg/d
Q 3.175509930382258 1.7853e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1489  
   data-arc span      7832 days (21.44 yr)  
   first obs. used      1998-05-23  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51112  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 05:38:21  

Additional Information
 Earth MOID = 1.44784 au 
 Jupiter MOID = 2.0432 au 
 T_jup = 3.296 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO452668  
diameter diameter 5.058 km 0.222 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.397   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35643 (1998 KN55)          Discovered 1998-May-23 by LINEAR at Socorro
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 KN55 = 1999 RR128 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin