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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1047175866252152 4.0139e-08  
a 3.006319465165273 1.7009e-08 au
q 2.691504946148759 1.2224e-07 au
i 8.085867424223453 3.8677e-06 deg
node 289.8556913890194 3.3657e-05 deg
peri 109.4663777150095 4.2126e-05 deg
M 359.017317441426 2.2621e-05 deg
tp 2459205.697109499861
(2020-Dec-22.19710950)
0.00011962 TDB
period 1903.930627063299
5.21
1.6158e-05
4.424e-08
d
yr
n .1890825195428883 1.6047e-09 deg/d
Q 3.321133984181789 1.8791e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1139  
   data-arc span      15005 days (41.08 yr)  
   first obs. used      1979-12-20  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49557  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:02:39  

Additional Information
 Earth MOID = 1.7125 au 
 Jupiter MOID = 2.07226 au 
 T_jup = 3.228 
[ 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 14.60   n/a E2021B10  

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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