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translunar/state.py

Created April 25, 2019 17:55
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state.py
# -3700: NOVA-C (for 3700 Bay Area Blvd)
# 399: Earth
# J2000: inertial frame
x_eci = spice.spkez(-3700, et, 'J2000', 'NONE', 399)[0]
x_lci = spice.spkez(-3700, et, 'J2000', 'NONE', 301)[0]
# contains position and velocity information in an np array
# Get 3x3 DCM for position only
Tr_inrtl_to_body = spice.pxform('J2000', 'NOVAC_SPACECRAFT', et)
# Get 6x6 for position and velocity
Tx_inrtl_to_body = spice.sxform('J2000', 'NOVAC_SPACECRAFT', et)
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