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91012 (1998 DY)
Classification: Main-belt Asteroid          SPK-ID: 2091012
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04879446004693234 4.9931e-08  
a 2.6226288702847 1.8865e-08 au
q 2.494659110655661 1.3572e-07 au
i 3.890099179597788 4.4886e-06 deg
node 319.093640526996 7.208e-05 deg
peri 283.5472387754745 9.0034e-05 deg
M 78.09479118398406 5.1817e-05 deg
tp 2459059.970414486127
(2020-Jul-29.47041449)
0.00022484 TDB
period 1551.328186531347
4.25
1.6738e-05
4.583e-08
d
yr
n .2320592142433335 2.5039e-09 deg/d
Q 2.750598629913738 1.9786e-08 au
  Orbit Determination Parameters
   # obs. used (total)      605  
   data-arc span      8512 days (23.30 yr)  
   first obs. used      1998-02-18  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52769  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:40:36  

Additional Information
 Earth MOID = 1.48526 au 
 Jupiter MOID = 2.25601 au 
 T_jup = 3.399 
[ 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 15.85   n/a E2021B10  

91012 (1998 DY)          Discovered 1998-Feb-18 by Klet at Klet
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1998 DY = 2000 TX45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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