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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 ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4669778164706077 1.3948e-07  
a 2.777602150756314 3.8848e-08 AU
q 1.480523563372066 3.9849e-07 AU
i 14.33408566005382 1.8776e-05 deg
node 355.3261879488006 5.592e-05 deg
peri 12.7724061798445 6.0097e-05 deg
M 270.4497209940158 2.5069e-05 deg
tp 2457221.098702945873
(2015-Jul-17.59870295)
0.00012553 JED
period 1690.843789000323
4.63
3.5473e-05
9.712e-08
d
yr
n .2129114483206297 4.4668e-09 deg/d
Q 4.074680738140561 5.699e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      138  
   data-arc span      9779 days (26.77 yr)  
   first obs. used      1987-08-24  
   last obs. used      2014-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60969  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 14:28:17  

Additional Information
 Earth MOID = .480606 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 15.9 mag n/a MPO226341  

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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