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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4669124711683286 1.3951e-07  
a 2.777948444888699 3.8817e-08 AU
q 1.480889671707501 3.9859e-07 AU
i 14.33343084462205 1.8775e-05 deg
node 355.3192082311535 5.5919e-05 deg
peri 12.76228128244507 6.0096e-05 deg
M 313.0399189362459 2.5855e-05 deg
tp 2457221.102808085148
(2015-Jul-17.60280809)
0.00012555 JED
period 1691.160004660875
4.63
3.5446e-05
9.705e-08
d
yr
n .2128716378153646 4.4617e-09 deg/d
Q 4.075007218069897 5.694e-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 = .48241 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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