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 ]  
20442 (1999 JK52)
Classification: Main-belt Asteroid          SPK-ID: 2020442
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1074810674865208 4.0445e-08  
a 2.138100200173684 6.7416e-09 au
q 1.908294908265873 8.6762e-08 au
i 2.756355544007466 4.2852e-06 deg
node 305.9703951388461 6.6502e-05 deg
peri 353.9773651665078 6.856e-05 deg
M 85.11381902944996 1.5963e-05 deg
tp 2458330.515964226458
(2018-Jul-31.01596423)
5.0728e-05 TDB
period 1141.93269655595
3.13
5.4009e-06
1.479e-08
d
yr
n .3152550067843349 1.491e-09 deg/d
Q 2.367905492081495 7.4662e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1726  
   data-arc span      10163 days (27.82 yr)  
   first obs. used      1992-02-09  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51021  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:44:04  

Additional Information
 Earth MOID = .891936 au 
 Jupiter MOID = 2.79211 au 
 T_jup = 3.707 
[ 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 14.9   n/a MPO247538  
diameter diameter 2.710 km 0.105 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.317   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20442 (1999 JK52)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JK52 = 1993 OC4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-28 18:10 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin