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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07583999261311283 5.3522e-08  
a 2.385367733128442 1.4842e-08 AU
q 2.204461461868423 1.2896e-07 AU
i 5.478305331762436 5.7803e-06 deg
node 244.1004046435343 6.8593e-05 deg
peri 191.3811311077645 8.5255e-05 deg
M 123.9351733048646 4.8081e-05 deg
tp 2456537.241373845407
(2013-Sep-01.74137385)
0.00017994 JED
period 1345.647897755491
3.68
1.2559e-05
3.438e-08
d
yr
n .2675291215484165 2.4969e-09 deg/d
Q 2.56627400438846 1.5968e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1118  
   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      .49848  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:10:42  

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
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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