Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
7964 (1995 DD2)
Classification: Main-belt Asteroid          SPK-ID: 2007964
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08797123696113204 5.6783e-08  
a 2.760279045214271 2.021e-08 AU
q 2.517453883248879 1.6389e-07 AU
i 10.2437779873216 5.5038e-06 deg
node 163.3881483664933 3.1472e-05 deg
peri 82.85050180821455 4.7159e-05 deg
M 28.35126450249577 3.2838e-05 deg
tp 2456868.583888058292
(2014-Jul-30.08388806)
0.0001528 JED
period 1675.050518287624
4.59
1.8397e-05
5.037e-08
d
yr
n .2149188911436665 2.3604e-09 deg/d
Q 3.003104207179663 2.1988e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1213  
   data-arc span      13653 days (37.38 yr)  
   first obs. used      1977-03-15  
   last obs. used      2014-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50915  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:11:45  

Additional Information
 Earth MOID = 1.53199 AU 
 T_jup = 3.313 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5 mag n/a MPO302114  

7964 (1995 DD2)          Discovered 1995-Feb-23 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1995 DD2 = 1977 EG4 = 1982 JP4 = 1986 EY 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Sep-02 23:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin