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146442 Dwaynebrown (2001 QS320)
Classification: Main-belt Asteroid          SPK-ID: 2146442
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1307901631365969 4.2486e-08  
a 2.419354178828845 1.5e-08 au
q 2.102926451094613 1.0374e-07 au
i 2.207991027798906 5.105e-06 deg
node 163.6104873257928 0.00015884 deg
peri 346.8869259111775 0.00016074 deg
M 195.4698900240092 2.5104e-05 deg
tp 2459628.689236362639
(2022-Feb-18.18923636)
9.7624e-05 TDB
period 1374.509049580962
3.76
1.2783e-05
3.5e-08
d
yr
n .2619116986605152 2.4358e-09 deg/d
Q 2.735781906563077 1.6962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      364  
   data-arc span      6065 days (16.61 yr)  
   first obs. used      2001-08-20  
   last obs. used      2018-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56112  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 15:03:43  

Additional Information
 Earth MOID = 1.11389 au 
 Jupiter MOID = 2.25892 au 
 T_jup = 3.502 
[ 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 16.5   n/a MPO432921  

146442 Dwaynebrown           Discovered 2001 Aug. 20 by M. W. Buie at Cerro Tololo.
Dwayne C. Brown (b. 1960) served as the New Horizons NASA Public Affairs Officer for the New Horizons Mission to Pluto.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-05-29Last Updated: 2018-09-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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