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 ]  
12925 (1999 SN4)
Classification: Main-belt Asteroid          SPK-ID: 2012925
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1294692102905834 3.0292e-08  
a 2.434078653706913 8.5455e-09 au
q 2.118940412626312 7.5214e-08 au
i 10.4173105324273 5.6363e-06 deg
node 12.22819584265961 1.9179e-05 deg
peri 61.10319715865366 3.4199e-05 deg
M 10.2107002196419 2.5392e-05 deg
tp 2458561.158278162691
(2019-Mar-18.65827816)
9.7824e-05 TDB
period 1387.076258902039
3.80
7.3046e-06
2e-08
d
yr
n .2595387223229985 1.3668e-09 deg/d
Q 2.749216894787513 9.6519e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1727  
   data-arc span      14294 days (39.13 yr)  
   first obs. used      1980-10-14  
   last obs. used      2019-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49012  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:29:31  

Additional Information
 Earth MOID = 1.15388 au 
 Jupiter MOID = 2.55883 au 
 T_jup = 3.472 
[ 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 14.0   n/a MPO412277  
diameter diameter 3.912 km 0.374 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.318   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12925 (1999 SN4)          Discovered 1999-Sep-29 by Visnjan at Visnjan
Reference: 19991222/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 SN4 = 1980 TL3 = 1984 UL5 = 1997 EB28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-19 05:49 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin