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30775 Lattu (1987 QX)
Classification: Mars-crossing Asteroid          SPK-ID: 2030775
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4667991674143777 1.0462e-07  
a 2.777647930320543 2.6314e-08 au
q 1.481044189076644 2.9177e-07 au
i 14.33376281622069 1.4756e-05 deg
node 355.3168082394557 5.4907e-05 deg
peri 12.75534103645226 5.699e-05 deg
M 38.19763555392769 1.8535e-05 deg
tp 2457221.089356743276
(2015-Jul-17.58935674)
8.5103e-05 JED
period 1690.885591105115
4.63
2.4028e-05
6.579e-08
d
yr
n .2129061847198746 3.0255e-09 deg/d
Q 4.074251671564442 3.8598e-08 au
  Orbit Determination Parameters
   # obs. used (total)      164  
   data-arc span      10343 days (28.32 yr)  
   first obs. used      1987-08-24  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57532  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:14:47  

Additional Information
 Earth MOID = .48067 au 
 Jupiter MOID = 1.41506 au 
 T_jup = 3.125 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0 mag n/a MPO296376  

30775 Lattu           Discovered 1987 Aug. 24 by E. F. Helin at Palomar.
Kristan Rosemary Lattu (1947-2003), a member of the JPL technical staff, specialized in space systems integration and operations, contributing to the Deep Space Network, Galileo, Cassini, SIR/C-X/SAR, the Earth Observing System and the International Space Station. She took great pride in her Finnish heritage.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030806/MPCPages.arcLast Updated: 2003-10-02

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