Mission_Design: Mission_Design: Solar System Dynamics and Center for...

In Liu-Zhichao/nasaR: Interface to Various NASA APIs

Description

This API provides access to the JPL/SSD small-body mission design suite. See detailed info at: https://ssd-api.jpl.nasa.gov/doc/mdesign.html.

Usage

Mission_Design(mode = "Q", des = NULL, spk = NULL, sstr = NULL,
  class = FALSE, mjd0 = NULL, span = NULL, tof_min = NULL,
  tof_max = NULL, step = NULL)

Arguments

mode	String. Mode to select, "Q" or "M". "Q" as default.
des	String. Mode: Q, M. Designation (provisional or IAU-number) of the desired object (e.g., "2015 AB" or "141P" or "433"). Do not use des if spk or sstr are specified.
spk	Integer. Mode: Q, M. SPK-ID of the desired object (e.g., 2000433). Do not use spk if des or sstr are specified.
sstr	String. Mode: Q, M. Object search string: designation in various forms (including MPC packed form), case-insensitive name, or SPK-ID; designation can be an alternate provisional designation; examples: "atira", "2003 CP20", "2003cp20", "K03C20P", "163693", "2163693". Do not use sstr if des or spk are specified.
class	Boolean. Mode: Q, M. If set to TRUE, return the orbit class in human-readable format instead of the three-letter code. FALSE as default.
mjd0	Integer. Mode: M. First launch date to be explored (Modified Julian Date). Range: 33282 - 73459.
span	Integer. Mode: M. Duration of the launch-date period to be explored (days). Range: 10 - 9200.
tof_min	Integer. Mode: M. Minimum time of flight to be considered (days). Range: 10 - 9200.
tof_max	Integer. Mode: M. Maximum time of flight to be considered (days). Range: 10 - 9200.
step	Integer. Mode: M. Time step used to advance both the launch date and the time of flight (days). The size of the transfer map is limited to 1,500,000 points. Consequently, if the requested configuration leads to too many points, the API will return with code 200 and an error message in the JSON payload. Range: 1,2,5,10,15,20,30.

Details

Mode Q (query) - this is the standard mode, which retrieves the pre-computed mission options and low-thrust delta-V estimates stored in the small-body database.

Mode M (map) - additional information is returned when operating the API in map mode. Apart from the information provided in query mode, the API will generate the complete dataset in order to plot time of flight vs departure date maps displaying different parameters. Mode M is an extension of mode Q.

Value

Data of small-body mission design suite.

Examples

##### Mode: Q
Mission_Design(des = "2012%20TC4")
Mission_Design(des = 1, class = TRUE)
Mission_Design(sstr = "apophis")
##### Mode: M
Mission_Design(mode = "M", des = "2012%20TC4", mjd0 = 58490, span = 3652, tof_min = 10, tof_max = 365, step = 2)

Liu-Zhichao/nasaR documentation built on Dec. 16, 2019, 10:48 p.m.