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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .104632539618091 4.0176e-08  
a 3.00619149900642 1.7338e-08 au
q 2.691646047887062 1.2228e-07 au
i 8.085854718940684 4.1163e-06 deg
node 289.8548715861002 3.4174e-05 deg
peri 109.4050953105042 4.2746e-05 deg
M 321.2469075262721 2.324e-05 deg
tp 2459205.440246532005
(2020-Dec-21.94024653)		 0.00012252 TDB
period 1903.809065084004
5.21		 1.647e-05
4.509e-08		 d
yr
n .1890945928362387 1.6359e-09 deg/d
Q 3.320736950125777 1.9152e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1054  
   data-arc span      14942 days (40.91 yr)  
   first obs. used      1979-12-20  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50139  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:47:10  

Additional Information
 Earth MOID = 1.71362 au 
 Jupiter MOID = 2.07247 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 14.5   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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