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 ]  
(2021 DE)
Classification: Apollo [NEO]          SPK-ID: 54122968
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7598379518836347 1.5093e-06  
a 1.390434304582563 4.5992e-06 au
q .3339295503598024 1.101e-06 au
i 4.743369038155484 3.459e-05 deg
node 337.2881297145772 1.108e-05 deg
peri 303.9593144725651 7.6021e-05 deg
M 46.36581901887157 0.00018755 deg
tp 2459319.370667491333
(2021-Apr-14.87066749)
7.5195e-05 TDB
period 598.8583894488875
1.64
0.0029713
8.135e-06
d
yr
n .6011437868162753 2.9827e-06 deg/d
Q 2.446939058805323 8.0939e-06 au
  Orbit Determination Parameters
   # obs. used (total)      74  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      12 days  
   first obs. used      2021-02-16  
   last obs. used      2021-02-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .29869  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-06 11:18:18  

Additional Information
 Earth MOID = .00231929 au 
 Jupiter MOID = 2.74247 au 
 T_jup = 4.412 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459264.5 (2021-Feb-19.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7598183334366417 1.5089e-06  
q .3334411537072776 1.0952e-06 au
tp 2459319.374368836187
(2021-Apr-14.87436884)
7.5283e-05 TDB
node 337.2937639246589 1.1067e-05 deg
peri 304.0349034333973 7.5266e-05 deg
i 4.756026563095452 3.4558e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      74  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      12 days  
   first obs. used      2021-02-16  
   last obs. used      2021-02-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .29869  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-06 11:18:18  

Additional Information
 Jupiter MOID = 2.74247 au 
 T_jup = 4.412 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.276729286094404E-12 -1.571832251104317E-12 -1.13563768905638E-10 -6.870447136441227E-12 7.75299364162225E-11 3.408498637448922E-11
q -1.571832251104317E-12 1.199481974933864E-12 7.838643587944617E-11 5.304683685279134E-12 -7.183624395060316E-11 -2.434184075070279E-11
tp -1.13563768905638E-10 7.838643587944617E-11 5.667554659147138E-9 3.457898300904077E-10 -3.864662958536793E-9 -1.699486835378004E-9
node -6.870447136441227E-12 5.304683685279134E-12 3.457898300904077E-10 1.224750506868163E-10 -4.170751503955172E-10 -2.404722342583015E-11
peri 7.75299364162225E-11 -7.183624395060316E-11 -3.864662958536793E-9 -4.170751503955172E-10 5.665020145803892E-9 1.204578315188604E-9
i 3.408498637448922E-11 -2.434184075070279E-11 -1.699486835378004E-9 -2.404722342583015E-11 1.204578315188604E-9 1.194259008282878E-9

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 24.37   .26605 MPO606207 autocmod 2.8

[ 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-Aug-03 04:47 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin