# Made by eph2tle, compiled May  1 2018 10:14:32
# Run at Wed May 23 07:57:10 2018
#
#   This object (the Queqiao lunar communations relay satellite) will
# presumably be staying at the earth-moon L2 point.  The following TLEs
# are just for its ascent to the moon,  so these TLEs won't be updated.
# The following line should keep 'sat_id' from nagging you to update :
#
# No updates
#
#    The following TLEs (Two-Line Elements) were generated by fitting
# a numerically-integrated ephemeris,  based on the orbit given below,
# to the SDP4/SGP4 models.  Each TLE is good for the interval between
# its epoch and the epoch of the subsequent TLE (usually one day).
# The maximum deviation between the numerically integrated ephemerides
# and the TLE-based ephemeris, in kilometers,  is given for each TLE
# as the "worst residual".
#
#    This fitting is done using the 'eph2tle' code packaged with Find_Orb.
# The code has details on how the TLEs were computed :
#
#    https://github.com/Bill-Gray/find_orb/eph2tle.cpp
#
#    Be warned:  the error given is that between the numerically
# integrated ephems and the TLE model.  There will usually be at
# least some additional difference between the ephems and the actual
# motion of the satellite,  especially if the ephemerides are based
# on a short arc.  If the following orbital elements say something
# like "[based on] 10 observations 2015 Jan. 1-13",  and the TLEs
# are for 2015 May,  the extrapolation may be tenuous at best.  If
# your application requires a specific level of accuracy,  you may
# want to contact me;  I can give you some idea as to the fit of the
# underlying data (and possibly TLEs based on newer data).
#
# Queqiao just went in a simple Hohmann-like transfer from low-earth
# orbit to a lunar flyby.  These TLEs give its position over four
# days;  after that,  it'll maneuver into an orbit behind the moon
# at the earth-moon L2 point.  So these are the only TLEs it'll have.
# (At least,  until it runs out of stationkeeping fuel and falls into
# a geocentric orbit.)
#
#    Also,  if you use a TLE outside the "correct" time range (between
# its epoch and that of the next epoch),  all bets are off.  It usually
# seems to be a decent fit,  at least for a while,  but I don't
# recommend doing it.
#
# Ephem range: 58259.000000 58263.000000 1.000000
# Created Wed May 23 07:56:32 2018
# Ephemeris start: 21 May 2018  0:00:00
# Ephemeris end:   25 May 2018  0:00:00
# Times are all TDT
# Positions/velocities are in equatorial J2000
# Orbital elements:  2018-045A = NORAD 43470 = Queqiao
#    Perigee 2018 May 20.911901 +/- 0.000131 TT = 21:53:08 (JD 2458259.411901)
# Epoch 2018 May 22.0 TT = JDT 2458260.5                        Gray
# M  39.60922 +/- 0.013               (J2000 equator)
# n  36.40221537 +/- 0.013            Peri.  174.41284 +/- 0.0028
# a194618.877 +/- 46.5                Node   204.65259 +/- 0.00009
# e   0.9664106 +/- 6.47e-6           Incl.   29.01042 +/- 0.0006
# P   9.89d                  H 27.9   G  0.15   U  9.8
# q 6537.11322 +/- 2.18    Q 382700.641 +/- 91.2
# 12 of 16 observations 2018 May 21-22 (23.4 hr); mean residual 0".083
#
# 1 NoradU COSPAR   Epoch.epoch     dn/dt/2  d2n/dt2/6 BSTAR    T El# C
# 2 NoradU Inclina RAAscNode Eccent  ArgPeri MeanAno  MeanMotion Rev# C

# Worst residual: 86.03 km
# MJD 58259.000000 (2018 May 21  0:00)
2018-045A = NORAD 43470 = Queqiao
1 43470U 18045A   18141.49919926  .00000000  00000-0  00000-0 0  1431
2 43470 028.6387 204.9593 9646218 173.6943 025.9019 00.10188824    03

# Worst residual: 13.70 km
# MJD 58260.000000 (2018 May 22  0:00)
2018-045A = NORAD 43470 = Queqiao
1 43470U 18045A   18142.49919926  .00000000  00000-0  00000-0 0  1432
2 43470 029.0185 204.6370 9655144 173.9312 061.6563 00.10068563    03

# Worst residual: 49.47 km
# MJD 58261.000000 (2018 May 23  0:00)
2018-045A = NORAD 43470 = Queqiao
1 43470U 18045A   18143.49919926  .00000000  00000-0  00000-0 0  1433
2 43470 030.0198 204.1279 9663393 174.2926 098.0263 00.10099998    09

# Worst residual: 220.93 km
# MJD 58262.000000 (2018 May 24  0:00)
2018-045A = NORAD 43470 = Queqiao
1 43470U 18045A   18144.49919926  .00000000  00000-0  00000-0 0  1434
2 43470 035.3452 202.5371 9696628 175.4084 135.1331 00.10164195    01
Worst residual in entire run: 220.93 km on MJD 58262.0
       1     3     10    30    100   300   1K    3K    10K   km
     0     0     0     1     2     1     0     0     0     0