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 ]  
324820 (2007 HB81)
Classification: Outer Main-belt Asteroid          SPK-ID: 2324820
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07042916813318963 8.825e-08  
a 3.214190113053978 7.5868e-08 au
q 2.987817377169664 2.9994e-07 au
i 22.52419972483197 1.1991e-05 deg
node 32.40374578841507 1.6638e-05 deg
peri 20.18202604052622 6.8387e-05 deg
M 255.8221158478502 6.3698e-05 deg
tp 2459609.586256410513
(2022-Jan-30.08625641)
0.00037289 TDB
period 2104.775443390109
5.76
7.4522e-05
2.04e-07
d
yr
n .1710396237900595 6.0559e-09 deg/d
Q 3.440562848938292 8.1212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      221  
   data-arc span      4893 days (13.40 yr)  
   first obs. used      2006-01-06  
   last obs. used      2019-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63989  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:13:32  

Additional Information
 Earth MOID = 2.00263 au 
 Jupiter MOID = 1.95115 au 
 T_jup = 3.067 
[ 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 15.3   n/a MPO437406  

324820 (2007 HB81)          Discovered 2007-Apr-25 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120406/Numbers.arcLast Updated: 2012-04-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jun-07 05:33 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin