astrometric_uncertainty

Attributes

`EARLY_703_JD`
`EARLY_691_JD`
`EARLY_644_JD`
`data_weight_Veres2017`

Functions

astrometric_uncertainty_Veres2017(obsCode, jd_tdb[, ...])

Return the astrometric uncertainty (sigma, in arcseconds) for an

Module Contents

EARLY_703_JD = 2456658.5[source]

EARLY_691_JD = 2452640.5[source]

EARLY_644_JD = 2452883.5[source]

astrometric_uncertainty_Veres2017(obsCode, jd_tdb, catalog=None, program=None)[source]

Return the astrometric uncertainty (sigma, in arcseconds) for an observatory, Julian date, and optionally catalog and program, based on the work of Veres et al. This is a one-sigma uncertainty, not a 1/sigma^2 weight – the fit squares-and-inverts it into the weight matrix.

See: Veres et al. 2017 https://arxiv.org/pdf/1703.03479

Parameters:

obsCode (str) – The observatory code
jd_tdb (float) – Julian date in TDB of the observation
catalog (str, optional) – The stellar catalog used for measuring the astrometry, by default None
program (str, optional) – The program code assigned by the Minor Planet Center, by default None

Returns:

Astrometric uncertainty in arcseconds

Return type:

float

data_weight_Veres2017[source]