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 ]  
523942 (1998 KG42)
Classification: Main-belt Asteroid          SPK-ID: 2523942
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1750310089318636 1.2819e-07  
a 2.438932177062595 2.4227e-08 au
q 2.012043417394942 3.1198e-07 au
i 15.81801960261397 8.8189e-06 deg
node 112.1453639972772 2.579e-05 deg
peri 166.1823776841825 3.1577e-05 deg
M 153.1895833331629 2.2872e-05 deg
tp 2458008.495856850117
(2017-Sep-11.99585685)
8.7279e-05 TDB
period 1391.227046231027
3.81
2.073e-05
5.676e-08
d
yr
n .2587643770837234 3.8557e-09 deg/d
Q 2.865820936730248 2.8468e-08 au
  Orbit Determination Parameters
   # obs. used (total)      92  
   data-arc span      7863 days (21.53 yr)  
   first obs. used      1998-05-28  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6435  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-15 00:24:47  

Additional Information
 Earth MOID = .997902 au 
 Jupiter MOID = 2.3095 au 
 T_jup = 3.431 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.0   .29221 E2018V49 autocmod 2.6q
diameter diameter 2.818 km 0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.032   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

523942 (1998 KG42)          Discovered 1998-May-28 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-05-29

Alternate Designations
 1998 KG42 = 2010 MT12 = 2016 AS54 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-27 18:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin