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91018 (1998 DA20)
Classification: Main-belt Asteroid          SPK-ID: 2091018
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696767075614012 3.7954e-08  
a 2.467273671272312 9.1445e-09 au
q 2.048634798077895 9.7488e-08 au
i 2.846781563947377 3.695e-06 deg
node 142.1747258760668 8.6546e-05 deg
peri 321.5813461239524 8.7355e-05 deg
M 35.11176146425114 1.2647e-05 deg
tp 2459258.437882497414
(2021-Feb-12.93788250)
4.9479e-05 TDB
period 1415.547390054328
3.88
7.8697e-06
2.155e-08
d
yr
n .2543185784731541 1.4139e-09 deg/d
Q 2.885912544466729 1.0696e-08 au
  Orbit Determination Parameters
   # obs. used (total)      892  
   data-arc span      8452 days (23.14 yr)  
   first obs. used      1998-01-26  
   last obs. used      2021-03-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47833  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:18:14  

Additional Information
 Earth MOID = 1.06665 au 
 Jupiter MOID = 2.25354 au 
 T_jup = 3.465 
[ 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 16.08   n/a MPCxxxxx  

91018 (1998 DA20)          Discovered 1998-Feb-20 by ODAS at Caussols
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1998 DA20 = 2000 QG246 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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