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 ]  
26365 (1999 AK21)
Classification: Main-belt Asteroid          SPK-ID: 2026365
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2247396398641417 3.6169e-08  
a 2.555418956947695 1.2639e-08 au
q 1.98111502086127 8.9874e-08 au
i 15.897462623364 4.3102e-06 deg
node 127.9047774365997 1.5818e-05 deg
peri 225.9477585568346 2.0093e-05 deg
M 183.9970178183183 1.4719e-05 deg
tp 2459729.972830306993
(2022-May-30.47283031)
6.325e-05 TDB
period 1492.078234443972
4.09
1.107e-05
3.031e-08
d
yr
n .2412742118272071 1.79e-09 deg/d
Q 3.129722893034121 1.548e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1488  
   data-arc span      11202 days (30.67 yr)  
   first obs. used      1989-06-05  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49365  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 00:43:41  

Additional Information
 Earth MOID = 1.00465 au 
 Jupiter MOID = 2.35644 au 
 T_jup = 3.350 
[ 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 13.6   n/a MPO324552  

26365 (1999 AK21)          Discovered 1999-Jan-14 by Korlevic, K. at Visnjan
Reference: 20010705/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 AK21 = 1989 LB1 = 2000 EZ138 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-07 01:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin