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 ]  
442805 (2013 AL28)
Classification: Main-belt Asteroid          SPK-ID: 2442805
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1702469927996574 6.752e-08  
a 2.689121979584832 4.6567e-08 au
q 2.231307049289053 1.9601e-07 au
i 12.52101578751583 9.1178e-06 deg
node 136.204514295608 2.6508e-05 deg
peri 295.59585451799 3.5116e-05 deg
M 199.8666847107469 2.1196e-05 deg
tp 2459316.962352651412
(2021-Apr-12.46235265)
9.8688e-05 TDB
period 1610.698226590818
4.41
4.1838e-05
1.145e-07
d
yr
n .2235055543346386 5.8056e-09 deg/d
Q 3.146936909880611 5.4495e-08 au
  Orbit Determination Parameters
   # obs. used (total)      141  
   data-arc span      5256 days (14.39 yr)  
   first obs. used      2003-11-21  
   last obs. used      2018-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .70675  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 15:00:12  

Additional Information
 Earth MOID = 1.27844 au 
 Jupiter MOID = 2.18086 au 
 T_jup = 3.318 
[ 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 16.5   n/a MPO440834  

442805 (2013 AL28)          Discovered 2007-Nov-07 by CSS at Catalina
Reference: Last Updated: 2015-09-02

Alternate Designations
 2013 AL28 = 2007 VC304 = 2011 SZ250 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin