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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4666856239191671 9.3446e-08  
a 2.778264914484566 2.525e-08 au
q 1.481688619455605 2.6032e-07 au
i 14.33366537175154 1.3535e-05 deg
node 355.3167590178687 5.4875e-05 deg
peri 12.78682626103872 5.6841e-05 deg
M 80.75213562544783 1.8175e-05 deg
tp 2457221.088557399226
(2015-Jul-17.58855740)
8.1459e-05 JED
period 1691.449003526229
4.63
2.3059e-05
6.313e-08
d
yr
n .2128352668330491 2.9015e-09 deg/d
Q 4.074841209513527 3.7033e-08 au
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      10357 days (28.36 yr)  
   first obs. used      1987-08-24  
   last obs. used      2016-01-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58003  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 21:06:47  

Additional Information
 Earth MOID = .482021 au 
 Jupiter MOID = 1.41431 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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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