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91400 (1999 MW)
Classification: Main-belt Asteroid          SPK-ID: 2091400
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 .211527858760378 9.2991e-08  
a 2.550364676980498 1.4973e-08 au
q 2.01089149780071 2.4442e-07 au
i 11.15156850257723 6.5636e-06 deg
node 266.7485037075785 2.5135e-05 deg
peri 125.0905759726644 3.1346e-05 deg
M 66.68207251500444 1.3606e-05 deg
tp 2459120.944906835971
(2020-Sep-28.44490684)
5.7664e-05 TDB
period 1487.653724570859
4.07
1.3101e-05
3.587e-08
d
yr
n .2419917982619569 2.1311e-09 deg/d
Q 3.089837856160285 1.8141e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1196  
   data-arc span      7952 days (21.77 yr)  
   first obs. used      1999-06-15  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45532  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:40:29  

Additional Information
 Earth MOID = 1.04052 au 
 Jupiter MOID = 2.41124 au 
 T_jup = 3.383 
[ 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 14.71   n/a MPCxxxxx  
diameter diameter 3.519 km 0.632 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.327   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91400 (1999 MW)          Discovered 1999-Jun-23 by Farra d'Isonzo at Farra d'Isonzo
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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