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7810 (1981 DE)
Classification: Main-belt Asteroid          SPK-ID: 2007810
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07583999481938526 5.36e-08  
a 2.385367732266513 1.4881e-08 AU
q 2.204461455809092 1.2921e-07 AU
i 5.478305291583294 5.7917e-06 deg
node 244.1004049851853 6.8714e-05 deg
peri 191.3811299578401 8.5358e-05 deg
M 123.9351746487682 4.8112e-05 deg
tp 2456537.241369073106
(2013-Sep-01.74136907)
0.00018004 JED
period 1345.647897026137
3.68
1.2592e-05
3.448e-08
d
yr
n .2675291216934199 2.5035e-09 deg/d
Q 2.566274008723934 1.601e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1112  
   data-arc span      15201 days (41.62 yr)  
   first obs. used      1972-10-05  
   last obs. used      2014-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49941  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:38:17  

Additional Information
 Earth MOID = 1.21929 AU 
 T_jup = 3.525 
[ 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 13.5 mag n/a PDS3 (MPC 30433)  

7810 (1981 DE)          Discovered 1981-Feb-26 by Debehogne, H., DeSanctis, G. at La Silla (809)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 DE = 1972 TG4 = 1972 VL = 1977 AD1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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