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
JPL Small-Body Database Browser
Search: [ help ]  
120839 (1998 KX38)
Classification: Main-belt Asteroid          SPK-ID: 2120839
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1884667720237531 5.46e-08  
a 2.667545593370921 1.7177e-08 au
q 2.164801886162116 1.523e-07 au
i 14.02962828815819 4.8494e-06 deg
node 51.10437040084696 2.1069e-05 deg
peri 129.9832187970697 2.493e-05 deg
M 66.80730450351285 1.4197e-05 deg
tp 2458705.183541116686
(2019-Aug-09.68354112)
6.1569e-05 TDB
period 1591.351813818543
4.36
1.537e-05
4.208e-08
d
yr
n .2262227603437097 2.185e-09 deg/d
Q 3.170289300579725 2.0414e-08 au
  Orbit Determination Parameters
   # obs. used (total)      721  
   data-arc span      7671 days (21.00 yr)  
   first obs. used      1998-05-22  
   last obs. used      2019-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52517  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:35:05  

Additional Information
 Earth MOID = 1.19261 au 
 Jupiter MOID = 1.86778 au 
 T_jup = 3.315 
[ 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 15.1   n/a MPO338106  
diameter diameter 2.662 km 1.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.300   0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120839 (1998 KX38)          Discovered 1998-May-22 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 KX38 = 2000 WP139 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-24 04:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin