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 ]  
(2018 PK21)
Classification: Aten [NEO]          SPK-ID: 3826775
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08091134322707394 1.6342e-06  
a .988353212960831 3.0165e-07 au
q .9083842269173759 1.8924e-06 au
i 1.194449830388163 2.7981e-05 deg
node 304.505612819266 0.00016503 deg
peri 223.0795495685402 0.00032933 deg
M 87.71135331693014 0.00033854 deg
tp 2458913.058015454515
(2020-Mar-04.55801545)
0.00037722 TDB
period 358.8944104263221
0.98
0.00016431
4.499e-07
d
yr
n 1.003080542748951 4.5922e-07 deg/d
Q 1.068322199004286 3.2606e-07 au
  Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      833 days (2.28 yr)  
   first obs. used      2018-08-11  
   last obs. used      2020-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .47475  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-21 05:20:55  

Additional Information
 Earth MOID = .00775541 au 
 Jupiter MOID = 3.89364 au 
 T_jup = 6.133 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 25.9   .46799 MPO452057 autocmod 2.6n

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jan-26 00:50 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin