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90447 Emans (2004 BB109)
Classification: Main-belt Asteroid          SPK-ID: 2090447
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1107702825006853 4.859e-08  
a 2.319757648159172 9.238e-09 au
q 2.062797438139455 1.1371e-07 au
i 8.08403611167453 5.3482e-06 deg
node 35.71843800378062 2.7298e-05 deg
peri 351.735729680753 3.3449e-05 deg
M 324.6426404730892 1.8169e-05 deg
tp 2459127.247579278059
(2020-Oct-04.74757928)
6.5233e-05 TDB
period 1290.512898888064
3.53
7.7088e-06
2.111e-08
d
yr
n .2789588545067502 1.6663e-09 deg/d
Q 2.576717858178889 1.0261e-08 au
  Orbit Determination Parameters
   # obs. used (total)      755  
   data-arc span      7683 days (21.03 yr)  
   first obs. used      1999-10-15  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48795  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:43:22  

Additional Information
 Earth MOID = 1.06798 au 
 Jupiter MOID = 2.85615 au 
 T_jup = 3.557 
[ 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 16.0   n/a MPO436405  

90447 Emans           Discovered 2004 Jan. 28 by the Catalina Sky Survey.
Mike Emans (b. 1944) is a Seattle-area retired computer operations manager formerly with the Department of Information Services for the state of Washington. He is also a semi-professional guitarist with a group called "Common Threads" that played in the Washington area.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090209/MPCPages.arcLast Updated: 2009-02-11

Alternate Designations
 2004 BB109 = 1999 XX185 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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