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11819 Millarca (1981 ER35)
Classification: Main-belt Asteroid          SPK-ID: 2011819
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1046324944672315 4.108e-08  
a 3.006191490374378 2.2534e-08 au
q 2.691646175890342 1.2305e-07 au
i 8.085849803014465 6.0064e-06 deg
node 289.8548388540961 3.4786e-05 deg
peri 109.4051266369248 4.6876e-05 deg
M 321.2469091196798 3.1749e-05 deg
tp 2459205.440237222789
(2020-Dec-21.94023722)
0.00016863 TDB
period 1903.809056884048
5.21
2.1406e-05
5.861e-08
d
yr
n .189094593650694 2.1261e-09 deg/d
Q 3.320736804858413 2.4892e-08 au
  Orbit Determination Parameters
   # obs. used (total)      702  
   data-arc span      14577 days (39.91 yr)  
   first obs. used      1979-12-20  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57494  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:19:41  

Additional Information
 Earth MOID = 1.71362 au 
 Jupiter MOID = 2.07247 au 
 T_jup = 3.228 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO435811  

11819 Millarca           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring.
Millarca Valenzuela (b. 1977) is a geologist at the Pontificia Universidad Catolica de Chile, and a specialist in meteorites, undertaking many search expeditions in the Atacama Desert.
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 2017-03-12Last Updated: 2017-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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