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19808 Elainemccall (2000 SN85)
Classification: Main-belt Asteroid          SPK-ID: 2019808
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05427533493725014 3.8649e-08  
a 2.722941157154692 1.3381e-08 au
q 2.575152613835697 1.0352e-07 au
i 3.67513286586651 3.7835e-06 deg
node 96.78279988461514 6.7861e-05 deg
peri 212.7580302736083 8.0963e-05 deg
M 201.7889531074632 4.6744e-05 deg
tp 2459721.757122490196
(2022-May-22.25712249)
0.00021459 TDB
period 1641.17847139231
4.49
1.2097e-05
3.312e-08
d
yr
n .2193545712883928 1.6169e-09 deg/d
Q 2.870729700473686 1.4107e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1634  
   data-arc span      15191 days (41.59 yr)  
   first obs. used      1978-11-05  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51375  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:06:26  

Additional Information
 Earth MOID = 1.56128 au 
 Jupiter MOID = 2.26062 au 
 T_jup = 3.353 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456674.5 (2014-Jan-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05542805822883022 3.8471e-08  
q 2.571084729801536 1.0323e-07 au
tp 2456428.783512576715
(2013-May-16.28351258)
0.00020498 TDB
node 96.88067560745867 6.778e-05 deg
peri 210.4290658371623 8.0488e-05 deg
i 3.677384234024688 3.7869e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1634  
   data-arc span      15191 days (41.59 yr)  
   first obs. used      1978-11-05  
   last obs. used      2020-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51375  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:06:26  

Additional Information
 Jupiter MOID = 2.26062 au 
 T_jup = 3.353 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.479998026340034E-15 -3.942828546174708E-15 2.478911871740396E-12 -1.128478770010752E-15 5.116895011680013E-13 3.619094466957444E-16
q -3.942828546174708E-15 1.065683405791563E-14 -6.21445831908964E-12 1.898002046683518E-15 -1.276521031006732E-12 -8.09743829061301E-16
tp 2.478911871740396E-12 -6.21445831908964E-12 4.201566861930303E-8 -1.787063859965071E-11 8.922948543406457E-9 8.123310742447466E-13
node -1.128478770010752E-15 1.898002046683518E-15 -1.787063859965071E-11 4.594162847900209E-9 -4.588215003336829E-9 1.508786882630739E-11
peri 5.116895011680013E-13 -1.276521031006732E-12 8.922948543406457E-9 -4.588215003336829E-9 6.478294287317388E-9 -1.48947924451144E-11
i 3.619094466957444E-16 -8.09743829061301E-16 8.123310742447466E-13 1.508786882630739E-11 -1.48947924451144E-11 1.434060791185722E-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 14.1   n/a MPO365489  
diameter diameter 4.427 km 0.290 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.248   0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19808 Elainemccall           Discovered 2000 Sept. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Elaine McCall mentored a finalist in the 2003 Discovery Channel Youth Science Challenge, a middle school science competition. She teaches at the Howard Bishop Middle School, Gainesville, Florida.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20031010/MPCPages.arcLast Updated: 2003-10-10

Alternate Designations
 2000 SN85 = 1978 VM10 = 1998 DW37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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