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

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4622546475082803 7.4053e-08  
a 2.786065406840658 2.3776e-08 au
q 1.498193724266516 2.0337e-07 au
i 14.24540083818791 8.9954e-06 deg
node 355.065774739094 3.9586e-05 deg
peri 13.09479024932431 4.1815e-05 deg
M 60.03696705734497 1.9981e-05 deg
tp 2458917.229315229741
(2020-Mar-08.72931523)
9.1091e-05 TDB
period 1698.577585038369
4.65
2.1743e-05
5.953e-08
d
yr
n .2119420408999851 2.713e-09 deg/d
Q 4.0739370894148 3.4766e-08 au
  Orbit Determination Parameters
   # obs. used (total)      239  
   data-arc span      12252 days (33.54 yr)  
   first obs. used      1987-08-24  
   last obs. used      2021-03-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56637  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 06:39:51  

Additional Information
 Earth MOID = .498221 au 
 Jupiter MOID = 1.42475 au 
 T_jup = 3.125 
[ show covariance matrix ]

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 16.0   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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