Build IAU-style source names from sky coordinates

Build IAU-style source names from sky coordinates

Usage

iau_name(x, prefix = NULL, epoch = "J", ra_digits = 1, dec_digits = 0)

Arguments

x

A <sky_coord> vector.

prefix

Optional string added before the epoch code.

epoch

Epoch code, usually "J".

ra_digits

Number of digits after the decimal point in RA seconds.

dec_digits

Number of digits after the decimal point in Dec seconds.

Value

Character vector.

Examples

x <- parse_coord("J230631.0+155633")

iau_name(x)
#> [1] "J230631.0+155633"
iau_name(x, prefix = "SRGA J")
#> [1] "SRGA J230631.0+155633"
iau_name(x, ra_digits = 2, dec_digits = 1)
#> [1] "J230631.00+155633.0"

# Non-ICRS inputs are transformed internally
iau_name(transform_to(x, galactic()))
#> [1] "J230631.0+155633"