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 ]  
523802 (1998 KH9)
Classification: Amor [NEO]          SPK-ID: 2523802
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4594549516171338 1.0557e-07  
a 2.203326711707831 5.6045e-09 au
q 1.190997343983371 2.3322e-07 au
i 17.67561637151676 1.1236e-05 deg
node 82.64265784986146 1.9114e-05 deg
peri 185.3841709960313 3.0572e-05 deg
M 131.9566208830532 1.1743e-05 deg
tp 2458162.629727777954
(2018-Feb-13.12972778)
3.8344e-05 TDB
period 1194.584227339674
3.27
4.5579e-06
1.248e-08
d
yr
n .3013600814081699 1.1498e-09 deg/d
Q 3.21565607943229 8.1795e-09 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      7427 days (20.33 yr)  
   first obs. used      1998-05-22  
   last obs. used      2018-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53163  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 05:47:04  

Additional Information
 Earth MOID = .17592 au 
 Jupiter MOID = 1.90286 au 
 T_jup = 3.463 
[ 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 18.5   n/a MPO201058  

523802 (1998 KH9)          Discovered 1998-May-27 by LINEAR at Socorro
Reference: Last Updated: 2018-10-30

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-19 13:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin