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11468 Shantanunaidu (1981 EU42)
Classification: Main-belt Asteroid          SPK-ID: 2011468
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1661079235915301 3.5156e-08  
a 3.08157175215911 1.7976e-08 au
q 2.569698267009647 1.1456e-07 au
i .7882278208788773 3.9674e-06 deg
node 206.2829776209654 0.00027578 deg
peri 153.1861297490694 0.00027605 deg
M 309.248764579639 1.3907e-05 deg
tp 2459479.048594427580
(2021-Sep-21.54859443)
7.7645e-05 TDB
period 1975.863112756823
5.41
1.7289e-05
4.733e-08
d
yr
n .1821988566291467 1.5943e-09 deg/d
Q 3.593445237308574 2.0962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1188  
   data-arc span      14427 days (39.50 yr)  
   first obs. used      1981-03-11  
   last obs. used      2020-09-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5244  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:47:32  

Additional Information
 Earth MOID = 1.56466 au 
 Jupiter MOID = 1.86228 au 
 T_jup = 3.206 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456796.5 (2014-May-19.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1668551425178577 3.5127e-08  
q 2.563299001722988 1.1407e-07 au
tp 2457512.447964910052
(2016-May-03.94796491)
6.9828e-05 TDB
node 206.4071104143253 0.00027552 deg
peri 154.1821348505935 0.00027578 deg
i .7888269847925934 3.9723e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1188  
   data-arc span      14427 days (39.50 yr)  
   first obs. used      1981-03-11  
   last obs. used      2020-09-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5244  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:47:32  

Additional Information
 Jupiter MOID = 1.86228 au 
 T_jup = 3.206 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.233888613320131E-15 -3.976286715782387E-15 -7.218089645671192E-14 4.37430885621987E-16 1.893039171202156E-14 -2.262028930042699E-17
q -3.976286715782387E-15 1.301296911776896E-14 5.762251993543574E-13 -1.312045084463247E-15 -1.613883579714852E-14 1.198943961207144E-16
tp -7.218089645671192E-14 5.762251993543574E-13 4.875964172390127E-9 -5.183143045928385E-12 8.591512019593579E-10 3.202819719771323E-13
node 4.37430885621987E-16 -1.312045084463247E-15 -5.183143045928385E-12 7.590889503677395E-8 -7.590227429913588E-8 1.132539299651894E-10
peri 1.893039171202156E-14 -1.613883579714852E-14 8.591512019593579E-10 -7.590227429913588E-8 7.605513034106112E-8 -1.131933173283233E-10
i -2.262028930042699E-17 1.198943961207144E-16 3.202819719771323E-13 1.132539299651894E-10 -1.131933173283233E-10 1.577946984646721E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.27   n/a E2021B10  
diameter diameter 6.472 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.097   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11468 Shantanunaidu           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring.
Shantanu Naidu (b. 1985) is a postdoctoral researcher at the Jet Propulsion Laboratory who combines dynamical theory and radar observations for asteroid physical studies, including spin-orbit coupling interactions in binary asteroid systems.
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

[ show close-approach data ]
Alternate Designations
 1981 EU42 = 1995 YB24 = 1998 LF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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