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JPL Small-Body Database Browser
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15984 (1998 WM7)
Classification: Main-belt Asteroid          SPK-ID: 2015984
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .221600054705421 3.0753e-08  
a 2.565267825518127 1.0855e-08 au
q 1.996804335049253 7.8239e-08 au
i 9.065797188102776 5.3422e-06 deg
node 94.44269597142396 2.4981e-05 deg
peri 66.63597164212648 2.9175e-05 deg
M 53.40150195701866 1.673e-05 deg
tp 2458777.888052353768
(2019-Oct-21.38805235)
6.8924e-05 TDB
period 1500.712493389159
4.11
9.5253e-06
2.608e-08
d
yr
n .2398860551810214 1.5226e-09 deg/d
Q 3.133731315987 1.326e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1750  
   data-arc span      16841 days (46.11 yr)  
   first obs. used      1973-12-25  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47827  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:32:18  

Additional Information
 Earth MOID = 1.02613 au 
 Jupiter MOID = 1.91782 au 
 T_jup = 3.381 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456922.5 (2014-Sep-22.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .222456672267729 3.0726e-08  
q 1.993943657029649 7.8264e-08 au
tp 2457277.389578572468
(2015-Sep-11.88957857)
6.3563e-05 TDB
node 94.47656314066428 2.4975e-05 deg
peri 66.67291280890865 2.9144e-05 deg
i 9.068290486786251 5.3436e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1750  
   data-arc span      16841 days (46.11 yr)  
   first obs. used      1973-12-25  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47827  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:32:18  

Additional Information
 Jupiter MOID = 1.91782 au 
 T_jup = 3.381 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.440780390779316E-16 -2.390763016296741E-15 8.308412031233348E-14 -2.034415988556961E-15 4.927503504823777E-14 1.256403899549358E-15
q -2.390763016296741E-15 6.125243457356269E-15 3.958477062783571E-14 2.779608940998688E-15 -6.882416163289356E-14 -2.311861354001942E-15
tp 8.308412031233348E-14 3.958477062783571E-14 4.040212343136962E-9 -8.110645855055275E-12 9.667445496673846E-10 3.415494301203862E-12
node -2.034415988556961E-15 2.779608940998688E-15 -8.110645855055275E-12 6.237492162004911E-10 -6.17516903568529E-10 -5.02557978369038E-11
peri 4.927503504823777E-14 -6.882416163289356E-14 9.667445496673846E-10 -6.17516903568529E-10 8.493764856426718E-10 5.051276023247227E-11
i 1.256403899549358E-15 -2.311861354001942E-15 3.415494301203862E-12 -5.02557978369038E-11 5.051276023247227E-11 2.855386301896201E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO502292  

15984 (1998 WM7)          Discovered 1998-Nov-24 by LINEAR at Socorro
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WM7 = 1973 YF3 = 1974 DL2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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