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10690 Massera (1981 DO3)
Classification: Outer Main-belt Asteroid          SPK-ID: 2010690
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1216922395022268 4.4511e-08  
a 3.205194947612814 2.2968e-08 au
q 2.815147596396588 1.4628e-07 au
i 6.104160053137487 4.555e-06 deg
node 288.8607755680456 4.8888e-05 deg
peri 29.21335831589201 5.2748e-05 deg
M 111.0163174035658 1.9648e-05 deg
tp 2457954.154964646237
(2017-Jul-19.65496465)
0.00011516 TDB
period 2095.946057024233
5.74
2.2529e-05
6.168e-08
d
yr
n .1717601456361516 1.8462e-09 deg/d
Q 3.59524229882904 2.5763e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1269  
   data-arc span      14133 days (38.69 yr)  
   first obs. used      1981-02-12  
   last obs. used      2019-10-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53848  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:26:34  

Additional Information
 Earth MOID = 1.80282 au 
 Jupiter MOID = 1.68485 au 
 T_jup = 3.173 
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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 13.5   n/a MPO384850  
diameter diameter 9.218 km 0.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.099   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

10690 Massera           Discovered 1981 Feb. 28 by S. J. Bus at Siding Spring.
José Luis Massera (1915-2002) was a Uruguayan mathematician who studied the stability of differential equations. Massera's Lemma solves the equilibrium stability problem in nonlinear differential equations in terms of the Lyapunov function.
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

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Alternate Designations
 1981 DO3 = 1992 DZ9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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