Sentry: Sentry: Solar System Dynamics and Center for Near-Earth...

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

Description

This API provides access to results from the CNEOS Sentry system. See detailed info at: https://ssd-api.jpl.nasa.gov/doc/sentry.html.

Usage

Sentry(mode = "S", spk = NULL, des = NULL, h_max = NULL,
  ps_min = NULL, ip_min = NULL, days = NULL, all = FALSE,
  removed = FALSE)

Arguments

mode	String. Mode to select, "O" or "S" or "V" or "R". "S" as default.
spk	Integer. Mode: O. Select data for the object matching this SPK-ID (e.g., 2029075).
des	String. Mode: O. Select data for the object matching this designation (e.g., "29075" or "2000 SG344").
h_max	Number. Mode: S, V. Limit data to those with an absolute magnitude, H (weighted-mean for mode-S) less than or equal to this value. Allowable values: [-10:100].
ps_min	Integer. Mode: S, V. Limit data to those with a (weighted-mean for mode-S) Palermo scale (PS) greater than or equal to this value. Allowable values: [-20:20].
ip_min	Number. Mode: S, V. Limit data to those with a (weighted-mean for mode-S) impact-probability (IP) greater than or equal to this value. Allowable values: [1 - 1e-10].
days	Integer. Mode: S, V. Number of days since last observation: limit data to those objects that have been observed within the specified number of days (if the number is negative, limit data to those which have not been observed with the specified number of days). Allowable values: ABS(days) > 6.
all	Boolean. Mode: V. Request the complete VI data set. FALSE as default.
removed	Boolean. Mode: R. Request the list of removed objects. FALSE as default.

Details

This API supports four query modes:

O - obtain details related to a specified Sentry object

S - obtain summary data for all available Sentry objects

V - obtain data for all available VIs (Virtual Impactors)

R - obtain summary data for objects removed from Sentry

Value

Data of NEO Earth impact risk assessment.

Examples

##### Mode: O
Sentry(mode = "O", des = "99942")
Sentry(mode = "O", des = "2000%20SG344")
##### Mode: S
Sentry()
##### Mode: V
Sentry(mode = "V", all = TRUE, ip_min = 1e-3)
##### Mode: R
Sentry(mode = "R", removed = TRUE)

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