Class: Astronoby::Epoch

Inherits:

Object

• Object
• Astronoby::Epoch

Defined in:

lib/astronoby/epoch.rb

Constant Summary

B1900 =

2415020.3135

J1900 =

2415020.0

B1950 =

2433282.4235

J1950 =

2433282.5

J2000 =

2451545.0

DEFAULT_EPOCH =

J2000

DAYS_PER_JULIAN_CENTURY =

36525.0

JULIAN_DAY_NUMBER_OFFSET =

0.5

Class Method Summary

• .from_time(time) ⇒ Object
• .to_utc(epoch) ⇒ Object

Class Method Details

.from_time(time) ⇒ Object

# File 'lib/astronoby/epoch.rb', line 16

def self.from_time(time)
  time.to_datetime.ajd
end

.to_utc(epoch) ⇒ Object

# File 'lib/astronoby/epoch.rb', line 20

def self.to_utc(epoch)
  DateTime.jd(epoch + JULIAN_DAY_NUMBER_OFFSET).to_time.utc
end