*******************************************************************************
 Revised: May 17, 2019              TESS / (Earth)                          -95
                        https://tess.gsfc.nasa.gov/index.html 
                   http://spaceflight101.com/tess/tess-orbit-design/ 

 BACKGROUND:
  The NASA Transitting Exoplanet Survey Satellite (TESS) mission is to 
  detect exoplanets transiting nearby bright stars, targets for followup 
  characterization with large ground telescopes such as the Hubble Space 
  Telescope and the future James Webb Space Telescope.

  Launched        : 2018-Apr-18 22:51 UTC
  Launch vehicle  : Falcon 9 Block 4
  Launch site     : SLC-40, Cape Canaveral
  Payload mass    : 362 kg
  Ascent duration : 49 minutes, then TESS deployment

  TESS is designed to:
   - Monitor 200,000 nearby stars for planets
   - Detect and characterize Earth and Super-Earth size planets
   - Cover 400X larger sky area than Kepler
   - Span stellar spectral types of F5 to M5

  Transiting exoplanets allow determination of the following: 
   - Fundamental properties: 
       mass, radius, orbit
   - Dynamics: 
       planet-planet interactions, mutual inclinations, moons, tides
   - Atmospheric composition & structure: 
       transmission spectrum, emission spectrum, 

 MISSION OVERVIEW:
  All-sky, two year photometric exoplanet discovery mission.
  TESS will tile the sky with 26 observation sectors:

   - At least 27 days staring at each 24 deg. x 96 deg. sector
   - Brightest 100,000 stars at 1-minute cadence
   - Full frame images with 30-minute cadence
   - Map Northern hemisphere in first year
   - Map Southern hemisphere in second year
   - Sectors overlap at ecliptic poles for sensitivity to smaller 
      and longer period planets in JWST Continuous Viewing Zone (CVZ)

  TESS observes from unique High Earth Orbit (HEO):
   - Unobstructed view for continuous observation
   - Two 13.7 day orbits per observation sector
   - Stable 2:1 resonance with Moon's orbit (P/2)
   - Thermally stable, low-radiation

 SPACECRAFT: 
  Designed for photometric stability. Heritage Orbital LEOStar-2 spacecraft bus:
   - 3-axis stabilized pointing, with <= 3 arcsecong performance
   - Two-headed star tracker; 4 wheel zero-momentum system
   - 400W single-axis articulating solar array
   - Passive thermal control
   - Mono-propellant propulsion system
   - Ka-band 100 Mbps science downlink 
   - Hexagonal 3.9 x 1.2 x 1.5 meter dimensions when fully deployed
   - Two 1.1 x 0.89 m solar panels

 SCIENCE INSTRUMENT: 
  Four wide field-of-view CCD cameras. Each of the four cameras has:
   - 24 deg. x 24 deg. Field-of-View
   - 100 mm effective pupil diameter
   - Lens assembly with 7 optical elements
   - Athermal design
   - 600nm - 1000nm bandpass
   - 16.8 Megapixel, low-noise, low-power, MIT Lincoln Lab CCID-80 detector

 Trajectory:
  A SpaceX Falcon 9 launched the 362-kilogram TESS spacecraft into a 
  Suprasynchronous Transfer Orbit of 200 by 270,000 kilometers at an 
  inclination of 28.5 degrees. 

  The operational orbit chosen for TESS is a highly eccentric, 2:1 lunar 
  resonance orbit of 108,400 by 376,300 kilometers at an inclination of 
  37 degrees, timed so that the spacecraft reaches apogee with the moon at 
  a phasing of 90 degrees. 

  11 maneuvering engine burns, 3.5 phasing loops, and a lunar flyby will
  be used during the first 60 days to go from the inital transfer orbit to
  the operational orbit.

  Post-launch trajectory (starts after launch ascent, L+00:49 min.).
  Concatenated trajectory solutions:

  Trajectory name                           Start (TDB)          Stop (TDB)
  ------------------------------------   -----------------   -----------------
  095_548day_20180418_02.V0.1            2018-Apr-18 23:37   2018-Apr-19 10:16
  095_35day_2018****_01.V0.*             2018-Apr-19 10:16   2018-Dec-17 09:00
  095_548day_201812*_01.V0.*             2018-Dec-24 14:16   2019-Jan-13 14:10
  095_35day_2019****_01.V0.*             2019-Jan-13 14:10   2019-May-14 18:00
  095_548day_20190516_01.V0.1            2019-May-14 18:00   2020-Nov-12 17:00
*******************************************************************************
 
 
*******************************************************************************
Ephemeris / WWW_USER Sat May 25 15:28:16 2019 Pasadena, USA      / Horizons    
*******************************************************************************
Target body name: TESS (spacecraft) (-95)         {source: TESS_merged}
Center body name: Earth (399)                     {source: TESS_merged}
Center-site name: BODY CENTER
*******************************************************************************
Start time      : A.D. 2019-Apr-29 00:00:00.0000 TDB
Stop  time      : A.D. 2019-May-29 00:00:00.0000 TDB
Step-size       : 1440 minutes
*******************************************************************************
Center geodetic : 0.00000000,0.00000000,0.0000000 {E-lon(deg),Lat(deg),Alt(km)}
Center cylindric: 0.00000000,0.00000000,0.0000000 {E-lon(deg),Dxy(km),Dz(km)}
Center radii    : 6378.1 x 6378.1 x 6356.8 km     {Equator, meridian, pole}    
Output units    : AU-D                                                         
Output type     : GEOMETRIC cartesian states
Output format   : 2 (position and velocity)
Reference frame : ICRF/J2000.0                                                 
Coordinate systm: Earth Mean Equator and Equinox of Reference Epoch            
*******************************************************************************
JDTDB
   X     Y     Z
   VX    VY    VZ
*******************************************************************************
$$SOE
2458602.500000000 = A.D. 2019-Apr-29 00:00:00.0000 TDB 
 X =-1.087718791562222E-04 Y = 2.602174982725886E-03 Z = 1.723827541944643E-04
 VX=-3.470683625305379E-04 VY= 6.625318232818929E-05 VZ=-1.380196229522783E-04
2458603.500000000 = A.D. 2019-Apr-30 00:00:00.0000 TDB 
 X =-4.504092680443475E-04 Y = 2.604420417924655E-03 Z = 3.152471795875693E-05
 VX=-3.335328950526153E-04 VY=-6.103676229838894E-05 VZ=-1.425297825569811E-04
2458604.500000000 = A.D. 2019-May-01 00:00:00.0000 TDB 
 X =-7.704324460841996E-04 Y = 2.480730272512547E-03 Z =-1.103980259527387E-04
 VX=-3.036591868025443E-04 VY=-1.864206144144083E-04 VZ=-1.401505534824509E-04
2458605.500000000 = A.D. 2019-May-02 00:00:00.0000 TDB 
 X =-1.051332382205088E-03 Y = 2.230647248723864E-03 Z =-2.462394665245943E-04
 VX=-2.544328463474890E-04 VY=-3.146018689310568E-04 VZ=-1.300916713892205E-04
2458606.500000000 = A.D. 2019-May-03 00:00:00.0000 TDB 
 X =-1.270180480060520E-03 Y = 1.849010294879268E-03 Z =-3.670789299600588E-04
 VX=-1.775224817613258E-04 VY=-4.503333386368358E-04 VZ=-1.093903665758145E-04
2458607.500000000 = A.D. 2019-May-04 00:00:00.0000 TDB 
 X =-1.390935236881942E-03 Y = 1.325965575891470E-03 Z =-4.590743258884674E-04
 VX=-5.341607709210169E-05 VY=-5.979672004912177E-04 VZ=-7.048513825791660E-05
2458608.500000000 = A.D. 2019-May-05 00:00:00.0000 TDB 
 X =-1.345403518651593E-03 Y = 6.498073351667779E-04 Z =-4.954640817410382E-04
 VX= 1.684100814098360E-04 VY=-7.539089533957526E-04 VZ= 7.475378554272202E-06
2458609.500000000 = A.D. 2019-May-06 00:00:00.0000 TDB 
 X =-9.728870868441697E-04 Y =-1.599382216597403E-04 Z =-4.092905895296759E-04
 VX= 6.433653397858130E-04 VY=-8.260564617692395E-04 VZ= 1.952432144954056E-04
2458610.500000000 = A.D. 2019-May-07 00:00:00.0000 TDB 
 X = 7.023196457890901E-05 Y =-6.770279596790773E-04 Z =-2.617984712547055E-05
 VX= 1.325038795400221E-03 VY= 1.384520687195261E-04 VZ= 5.509978340202816E-04
2458611.500000000 = A.D. 2019-May-08 00:00:00.0000 TDB 
 X = 9.650471836103100E-04 Y = 6.251722632014528E-05 Z = 3.981608403054873E-04
 VX= 4.152462766474561E-04 VY= 9.664771546370820E-04 VZ= 2.473209015062164E-04
2458612.500000000 = A.D. 2019-May-09 00:00:00.0000 TDB 
 X = 1.111766521798563E-03 Y = 9.481506843437510E-04 Z = 5.296379361927424E-04
 VX=-4.263894142887754E-05 VY= 7.803847421314937E-04 VZ= 4.598912709596641E-05
2458613.500000000 = A.D. 2019-May-10 00:00:00.0000 TDB 
 X = 9.683625827425033E-04 Y = 1.621299671229857E-03 Z = 5.261997288613942E-04
 VX=-2.199033617953257E-04 VY= 5.715317524372901E-04 VZ=-4.250307687165619E-05
2458614.500000000 = A.D. 2019-May-11 00:00:00.0000 TDB 
 X = 7.029398073607877E-04 Y = 2.102486465272418E-03 Z = 4.581028584306965E-04
 VX=-3.008575712215173E-04 VY= 3.957395744736083E-04 VZ=-8.925579044876970E-05
2458615.500000000 = A.D. 2019-May-12 00:00:00.0000 TDB 
 X = 3.812161490311559E-04 Y = 2.420782679910441E-03 Z = 3.541097709235334E-04
 VX=-3.372070181050338E-04 VY= 2.440378534000377E-04 VZ=-1.163576468886995E-04
2458616.500000000 = A.D. 2019-May-13 00:00:00.0000 TDB 
 X = 3.707712099689006E-05 Y = 2.595558216389264E-03 Z = 2.291460491155465E-04
 VX=-3.475264465041682E-04 VY= 1.074562358717650E-04 VZ=-1.320211772900070E-04
2458617.500000000 = A.D. 2019-May-14 00:00:00.0000 TDB 
 X =-3.076973007420712E-04 Y = 2.638504327772705E-03 Z = 9.272456650382897E-05
 VX=-3.392231827965846E-04 VY=-2.061044411611865E-05 VZ=-1.396270583590940E-04
2458618.500000000 = A.D. 2019-May-15 00:00:00.0000 TDB 
 X =-6.359389210744001E-04 Y = 2.555414909268581E-03 Z =-4.783019231088189E-05
 VX=-3.145080592530925E-04 VY=-1.454266251052179E-04 VZ=-1.403520321675835E-04
2458619.500000000 = A.D. 2019-May-16 00:00:00.0000 TDB 
 X =-9.307871576535618E-04 Y = 2.347135788141099E-03 Z =-1.855901312217138E-04
 VX=-2.718687508158642E-04 VY=-2.717965947150016E-04 VZ=-1.338532910550388E-04
2458620.500000000 = A.D. 2019-May-17 00:00:00.0000 TDB 
 X =-1.171761883622928E-03 Y = 2.009615086464590E-03 Z =-3.124456275690987E-04
 VX=-2.052209143735057E-04 VY=-4.048141215103767E-04 VZ=-1.179759608546209E-04
2458621.500000000 = A.D. 2019-May-18 00:00:00.0000 TDB 
 X =-1.328458477658302E-03 Y = 1.533372890485339E-03 Z =-4.166041272539300E-04
 VX=-9.959439121122670E-05 VY=-5.502220690180822E-04 VZ=-8.701127771067227E-05
2458622.500000000 = A.D. 2019-May-19 00:00:00.0000 TDB 
 X =-1.345796618737820E-03 Y = 9.036260321009992E-04 Z =-4.765648148457255E-04
 VX= 8.368527742273344E-05 VY=-7.116394926360609E-04 VZ=-2.538692918723866E-05
2458623.500000000 = A.D. 2019-May-20 00:00:00.0000 TDB 
 X =-1.097390319910379E-03 Y = 1.140326655470465E-04 Z =-4.408824687585608E-04
 VX= 4.672411011534099E-04 VY=-8.523849627998346E-04 VZ= 1.202297071723027E-04
2458624.500000000 = A.D. 2019-May-21 00:00:00.0000 TDB 
 X =-2.326391412359495E-04 Y =-6.149026148858286E-04 Z =-1.472088925622699E-04
 VX= 1.320746430725096E-03 VY=-3.046277612186423E-04 VZ= 5.163238098038945E-04
2458625.500000000 = A.D. 2019-May-22 00:00:00.0000 TDB 
 X = 8.515238224103378E-04 Y =-7.029714822085003E-05 Z = 3.433364103071958E-04
 VX= 5.612512754074844E-04 VY= 9.904480283865825E-04 VZ= 3.134972700322438E-04
2458626.500000000 = A.D. 2019-May-23 00:00:00.0000 TDB 
 X = 1.076614140132764E-03 Y = 8.564015587301418E-04 Z = 5.137200537723248E-04
 VX=-2.198357204554976E-06 VY= 8.193235542188178E-04 VZ= 6.831287486988799E-05
2458627.500000000 = A.D. 2019-May-24 00:00:00.0000 TDB 
 X = 9.618586415908798E-04 Y = 1.561930029202252E-03 Z = 5.265530897370123E-04
 VX=-1.982572908332240E-04 VY= 5.988788152535391E-04 VZ=-3.010476945928284E-05
2458628.500000000 = A.D. 2019-May-25 00:00:00.0000 TDB 
 X = 7.153600090415407E-04 Y = 2.068237852240172E-03 Z = 4.691888361947195E-04
 VX=-2.838616376901870E-04 VY= 4.196869040122450E-04 VZ=-7.965215322440138E-05
2458629.500000000 = A.D. 2019-May-26 00:00:00.0000 TDB 
 X = 4.092796453297073E-04 Y = 2.410792086454283E-03 Z = 3.742654546565264E-04
 VX=-3.229039454663928E-04 VY= 2.691122235377124E-04 VZ=-1.076733117795526E-04
2458630.500000000 = A.D. 2019-May-27 00:00:00.0000 TDB 
 X = 7.792205091999105E-05 Y = 2.612198077284454E-03 Z = 2.577427991596289E-04
 VX=-3.364626402607869E-04 VY= 1.358702101389029E-04 VZ=-1.238289285277698E-04
2458631.500000000 = A.D. 2019-May-28 00:00:00.0000 TDB 
 X =-2.578916778397811E-04 Y = 2.685759530231110E-03 Z = 1.292015308781226E-04
 VX=-3.325948036468193E-04 VY= 1.237587265940593E-05 VZ=-1.321299254419245E-04
2458632.500000000 = A.D. 2019-May-29 00:00:00.0000 TDB 
 X =-5.823642209226962E-04 Y = 2.638352770895391E-03 Z =-4.451353452139428E-06
 VX=-3.139121924447243E-04 VY=-1.068810900761767E-04 VZ=-1.341890808696560E-04
$$EOE
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Coordinate system description:

  NOTE:
   The ICRF is quasar-based; the EME description below is given as a dynamical
   explanation of the previous system to which the ICRF was closely aligned.

  ICRF ("Earth Mean Equator and Equinox of Reference Epoch")

    Reference epoch: J2000.0
    XY-plane: plane of the Earth's mean equator at the reference epoch
    X-axis  : out along ascending node of instantaneous plane of the Earth's
              orbit and the Earth's mean equator at the reference epoch
    Z-axis  : along the Earth mean north pole at the reference epoch

  Symbol meaning [1 au= 149597870.700 km, 1 day= 86400.0 s]:

    JDTDB    Julian Day Number, Barycentric Dynamical Time
      X      X-component of position vector (au)                               
      Y      Y-component of position vector (au)                               
      Z      Z-component of position vector (au)                               
      VX     X-component of velocity vector (au/day)                           
      VY     Y-component of velocity vector (au/day)                           
      VZ     Z-component of velocity vector (au/day)                           

Geometric states/elements have no aberrations applied.

 Computations by ...
     Solar System Dynamics Group, Horizons On-Line Ephemeris System
     4800 Oak Grove Drive, Jet Propulsion Laboratory
     Pasadena, CA  91109   USA
     Information: http://ssd.jpl.nasa.gov/
     Connect    : telnet://ssd.jpl.nasa.gov:6775  (via browser)
                  http://ssd.jpl.nasa.gov/?horizons
                  telnet ssd.jpl.nasa.gov 6775    (via command-line)
     Author     : Jon.D.Giorgini@jpl.nasa.gov
*******************************************************************************