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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07549997019972303 5.2361e-08  
a 2.386070200299849 1.3397e-08 au
q 2.205921971282763 1.2497e-07 au
i 5.477473543054164 5.7576e-06 deg
node 244.0893719764608 5.856e-05 deg
peri 191.3009841258896 7.0881e-05 deg
M 284.505767908555 4.064e-05 deg
tp 2457882.815370247552
(2017-May-09.31537025)
0.00015268 JED
period 1346.242361482816
3.69
1.1338e-05
3.104e-08
d
yr
n .2674109880211158 2.2522e-09 deg/d
Q 2.566218429316935 1.4409e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1236  
   data-arc span      15653 days (42.86 yr)  
   first obs. used      1972-10-05  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49786  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:26:23  

Additional Information
 Earth MOID = 1.21945 au 
 Jupiter MOID = 2.62596 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 13.6 mag n/a MPO344364  

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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