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15679 (1981 DA1)
Classification: Main-belt Asteroid          SPK-ID: 2015679
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09373919333318796 3.7805e-08  
a 2.722806236674747 1.2571e-08 au
q 2.467572576446283 1.0159e-07 au
i 11.47382906851109 4.3265e-06 deg
node 234.52344917893 1.9727e-05 deg
peri 10.87700754703784 2.9298e-05 deg
M 207.8814226369286 2.2464e-05 deg
tp 2459693.931053210186
(2022-Apr-24.43105321)
0.00010334 TDB
period 1641.056493447519
4.49
1.1365e-05
3.112e-08
d
yr
n .2193708756751663 1.5193e-09 deg/d
Q 2.978039896903211 1.375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1679  
   data-arc span      24040 days (65.82 yr)  
   first obs. used      1954-04-03  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52063  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:24:44  

Additional Information
 Earth MOID = 1.4556 au 
 Jupiter MOID = 2.03798 au 
 T_jup = 3.323 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456980.5 (2014-Nov-19.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09478041699794103 3.7575e-08  
q 2.46383533522294 1.0103e-07 au
tp 2456415.300369026092
(2013-May-02.80036903)
0.00010034 TDB
node 234.5703758588086 1.9752e-05 deg
peri 11.36680888495056 2.9244e-05 deg
i 11.46733577391668 4.325e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1679  
   data-arc span      24040 days (65.82 yr)  
   first obs. used      1954-04-03  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52063  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:24:44  

Additional Information
 Jupiter MOID = 2.03798 au 
 T_jup = 3.323 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.411844132496306E-15 -3.7727817405172E-15 -3.673474128693638E-13 1.847378970447734E-15 -9.940611702056283E-14 -1.181298855650331E-15
q -3.7727817405172E-15 1.02073947412504E-14 9.815593518766468E-13 -4.170660413717331E-15 2.730266545899869E-13 3.683982007145534E-15
tp -3.673474128693638E-13 9.815593518766468E-13 1.006800765425974E-8 8.150140242169303E-12 2.179840588396167E-9 -2.511151419107422E-12
node 1.847378970447734E-15 -4.170660413717331E-15 8.150140242169303E-12 3.901303041759643E-10 -3.801355888152997E-10 -1.152248775769369E-11
peri -9.940611702056283E-14 2.730266545899869E-13 2.179840588396167E-9 -3.801355888152997E-10 8.55232605765851E-10 1.078728182688762E-11
i -1.181298855650331E-15 3.683982007145534E-15 -2.511151419107422E-12 -1.152248775769369E-11 1.078728182688762E-11 1.87056966361823E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8   n/a MPO502289  

15679 (1981 DA1)          Discovered 1981-Feb-28 by Bus, S. J. at Siding Spring
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 DA1 = 1992 WT9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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