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30741 (1981 EQ15)
Classification: Main-belt Asteroid          SPK-ID: 2030741
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1984754709645929 3.1619e-08  
a 2.645162605926239 1.1047e-08 au
q 2.120162711937099 8.1862e-08 au
i 6.035977935611637 3.9757e-06 deg
node 228.0898559945473 3.2452e-05 deg
peri 233.0237553328124 3.3919e-05 deg
M 143.9174190323471 9.9907e-06 deg
tp 2458572.314583600538
(2019-Mar-29.81458360)
4.2233e-05 TDB
period 1571.364685556078
4.30
9.8438e-06
2.695e-08
d
yr
n .2291002230794071 1.4352e-09 deg/d
Q 3.17016249991538 1.324e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1012  
   data-arc span      14859 days (40.68 yr)  
   first obs. used      1979-10-18  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49448  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:39:35  

Additional Information
 Earth MOID = 1.14316 au 
 Jupiter MOID = 2.03552 au 
 T_jup = 3.357 
[ show covariance matrix ]

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 15.3   n/a MPO468102  

30741 (1981 EQ15)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EQ15 = 1996 TR55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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