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 ]  
172730 (2004 BL120)
Classification: Main-belt Asteroid          SPK-ID: 2172730
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1136556660513335 4.5657e-08  
a 2.630942872768982 1.9661e-08 au
q 2.331921308221415 1.1902e-07 au
i 12.25551348475929 4.4842e-06 deg
node 77.63786169116248 2.1818e-05 deg
peri 115.8538539083948 2.8434e-05 deg
M 248.8629817437367 2.096e-05 deg
tp 2459481.695762239569
(2021-Sep-24.19576224)
9.3833e-05 TDB
period 1558.710833925782
4.27
1.7472e-05
4.784e-08
d
yr
n .2309600935365934 2.5889e-09 deg/d
Q 2.92996443731655 2.1895e-08 au
  Orbit Determination Parameters
   # obs. used (total)      378  
   data-arc span      7209 days (19.74 yr)  
   first obs. used      2000-03-04  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5306  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 13:00:45  

Additional Information
 Earth MOID = 1.35791 au 
 Jupiter MOID = 2.11367 au 
 T_jup = 3.358 
[ 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 15.9   n/a MPO502963  

172730 (2004 BL120)          Discovered 2004-Jan-31 by LONEOS at Anderson Mesa
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-18 02:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin