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 ]  
66270 (1999 JK4)
Classification: Main-belt Asteroid          SPK-ID: 2066270
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2548760218708673 4.1977e-08  
a 2.303617941349005 1.0603e-08 au
q 1.716480964547613 9.8074e-08 au
i 22.60900505199483 5.8523e-06 deg
node 224.4541511937209 8.9186e-06 deg
peri 142.6482019096491 1.4608e-05 deg
M 305.3481186738846 1.5134e-05 deg
tp 2459394.372727923438
(2021-Jun-28.87272792)
5.4413e-05 TDB
period 1277.068242828938
3.50
8.817e-06
2.414e-08
d
yr
n .281895663776381 1.9462e-09 deg/d
Q 2.890754918150396 1.3305e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1147  
   data-arc span      7769 days (21.27 yr)  
   first obs. used      1999-05-07  
   last obs. used      2020-08-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5207  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:20:43  

Additional Information
 Earth MOID = .755891 au 
 Jupiter MOID = 2.67418 au 
 T_jup = 3.447 
[ 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 14.60   n/a E2021B10  
diameter diameter 2.619 km 0.309 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.384   0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66270 (1999 JK4)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JK4 = 2000 RL53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-23 16:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin