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You are an expert on the helial risings of stars. These are stars that rise with the sun or just long enough before sunrise that they can be seen from Earth.

A fellow astronomer has called you and wants some information about the helial risings of certain stars. Using the chart below, figure out the answers to your colleague's questions:

  1. On what day will the star Betelgeuse rise with the sun?
  2. What will I see if I look at the sky one hour before sunrise on Dec. 18?
  3. What stars will rise with the sun in the month of July?
  4. What day should I look for Regulus rising one hour before the sun?
  5. What is the last star I will see rising in October?

Information for observing helical risings

ObjectRises with the sunRises 1 hour before the sun
Alpha Beta CapricorniJan. 15Feb. 7
Alpha AndromedaeFeb. 1March 1
PleiadesMay 16June 3
AldebaranJune 7June 22
BetelgeuseJuly 2July 16
PolluxJuly 10July 25
ProcyonJuly 27Aug. 9
SiriusAug. 4Aug. 15
RegulusAug. 21Sept. 2
ArcturusOct. 7Oct. 20
SpicaOct. 17Oct. 29
AntaresDec. 7Dec. 18
AltairDec. 15Dec. 27

Contact

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    From outside the U.S., please call +1 (424) 750-3900
  • North Dakota Career Resource Network
    ndcrn@nd.gov | (701) 328-9733

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