Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
11819 Millarca (1981 ER35)
Classification: Main-belt Asteroid          SPK-ID: 2011819
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457618.5 (2016-Aug-18.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1064751979009774 4.1162e-08  
q 2.686269065164221 1.2536e-07 au
tp 2457285.644174270388
(2015-Sep-20.14417427)
0.0001194 TDB
node 290.1832403977493 3.383e-05 deg
peri 106.6527235206339 4.1647e-05 deg
i 8.062442250935614 3.8604e-06 deg
  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
 Jupiter MOID = 2.07226 au 
 T_jup = 3.228 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.694269225482112E-15 -5.123924252916464E-15 -1.160803818791969E-12 -8.377065128082307E-15 -2.31941821246446E-13 -3.719192269341298E-15
q -5.123924252916464E-15 1.571636103201171E-14 2.951232119256942E-12 2.668750147652448E-14 5.919672150273348E-13 1.207572343987688E-14
tp -1.160803818791969E-12 2.951232119256942E-12 1.425521235723616E-8 2.509054033586695E-11 2.929502174954845E-9 5.907142440641787E-12
node -8.377065128082307E-15 2.668750147652448E-14 2.509054033586695E-11 1.14448594156867E-9 -1.128413370402635E-9 1.26871347872479E-11
peri -2.31941821246446E-13 5.919672150273348E-13 2.929502174954845E-9 -1.128413370402635E-9 1.734444526885285E-9 -1.142950251007499E-11
i -3.719192269341298E-15 1.207572343987688E-14 5.907142440641787E-12 1.26871347872479E-11 -1.142950251007499E-11 1.490261719882006E-11

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Mar-06 00:09 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin