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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08797123632201087 5.6771e-08  
a 2.760279045618737 2.0178e-08 AU
q 2.517453885381917 1.6384e-07 AU
i 10.243778448984 5.4907e-06 deg
node 163.3881488133974 3.1464e-05 deg
peri 82.85050185765691 4.7141e-05 deg
M 28.35126386214897 3.2801e-05 deg
tp 2456868.583891008778
(2014-Jul-30.08389101)
0.00015263 JED
period 1675.050518655794
4.59
1.8367e-05
5.029e-08
d
yr
n .2149188910964281 2.3566e-09 deg/d
Q 3.003104205855558 2.1953e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1228  
   data-arc span      13665 days (37.41 yr)  
   first obs. used      1977-03-15  
   last obs. used      2014-08-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50799  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:23:40  

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 ]
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