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281139 (2007 DL7)
Classification: Main-belt Asteroid          SPK-ID: 2281139
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1987202768119145 2.3103e-07  
a 2.555130201155381 3.1392e-08 au
q 2.047374020291301 6.1226e-07 au
i 5.421002348043435 5.8524e-06 deg
node 66.27648984278294 8.9272e-05 deg
peri 68.5705777214596 9.0772e-05 deg
M 100.2946933925426 1.5761e-05 deg
tp 2458584.882874786205
(2019-Apr-11.38287479)
6.198e-05 TDB
period 1491.825340064216
4.08
2.7493e-05
7.527e-08
d
yr
n .2413151126555496 4.4472e-09 deg/d
Q 3.062886382019462 3.7631e-08 au
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      8797 days (24.08 yr)  
   first obs. used      1995-04-24  
   last obs. used      2019-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52891  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:50:58  

Additional Information
 Earth MOID = 1.06891 au 
 Jupiter MOID = 2.00028 au 
 T_jup = 3.404 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO418496  

281139 (2007 DL7)          Discovered 2007-Feb-19 by Lowe, A. at Mayhill
Reference: 20110615/Numbers.arcLast Updated: 2011-06-23

Alternate Designations
 2007 DL7 = 2003 DO23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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