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 AH)
Classification: Apollo [NEO]          SPK-ID: 54104249
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 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6815824997376994 0.00035888  
a 1.680436679516951 0.0014657 au
q .5350804468408682 0.00013661 au
i .2985101513325724 0.00050504 deg
node 280.7247819334314 0.0037469 deg
peri 279.944634085555 0.0027159 deg
M 239.8539657077443 0.16347 deg
tp 2459266.045285450823
(2021-Feb-20.54528545)
0.013865 TDB
period 795.6675667692706
2.18
1.041
0.00285
d
yr
n .4524502631943946 0.00059197 deg/d
Q 2.825792912193033 0.0024648 au
  Orbit Determination Parameters
   # obs. used (total)      33  
   first obs. used      2021-01-03  
   last obs. used      2021-01-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .24705  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-04 09:42:02  

Additional Information
 Earth MOID = .000210812 au 
 Jupiter MOID = 2.13344 au 
 T_jup = 3.928 
[ 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 28.49   .1865 E2021A28 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-Feb-28 07:35 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin