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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08781881656528086 5.6794e-08  
a 2.759827998450979 2.019e-08 AU
q 2.517463169703286 1.6389e-07 AU
i 10.24376331692177 5.5083e-06 deg
node 163.3929768502757 3.1474e-05 deg
peri 82.8559629292494 4.7212e-05 deg
M 345.3559757190854 3.2917e-05 deg
tp 2456868.620745285239
(2014-Jul-30.12074529)
0.00015311 JED
period 1674.639964551756
4.58
1.8377e-05
5.031e-08
d
yr
n .2149715805309589 2.359e-09 deg/d
Q 3.002192827198672 2.1963e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1197  
   data-arc span      13591 days (37.21 yr)  
   first obs. used      1977-03-15  
   last obs. used      2014-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51168  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:38:43  

Additional Information
 Earth MOID = 1.53047 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 12.4 mag n/a MPO263420  

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 ]
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