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91401 (1999 MY)
Classification: Main-belt Asteroid          SPK-ID: 2091401
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1503852292575767 4.371e-08  
a 2.760739051345243 1.6428e-08 au
q 2.345564676188344 1.2316e-07 au
i 1.428352325043509 5.2169e-06 deg
node 326.0543975702398 0.00017186 deg
peri 348.6818940673325 0.00017263 deg
M 268.8125721017025 1.881e-05 deg
tp 2459820.893701357699
(2022-Aug-29.39370136)
8.9229e-05 TDB
period 1675.46926160886
4.59
1.4955e-05
4.094e-08
d
yr
n .2148651773260896 1.9178e-09 deg/d
Q 3.175913426502142 1.8898e-08 au
  Orbit Determination Parameters
   # obs. used (total)      469  
   data-arc span      9327 days (25.54 yr)  
   first obs. used      1995-10-17  
   last obs. used      2021-04-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56961  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:40:29  

Additional Information
 Earth MOID = 1.33116 au 
 Jupiter MOID = 2.09786 au 
 T_jup = 3.325 
[ 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 16.01   n/a E2021B10  

91401 (1999 MY)          Discovered 1999-Jun-22 by Zoltowski, F. B. at Woomera
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 MY = 2000 WY91 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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