Questions tagged [time]

How passage of time impacts space exploration activities.

5 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
7 votes
0 answers
133 views

What time format does Voyager twitter use?

Lately I saw this strange date format in a Voyager 2 tweet: Sister ship @NASAVoyager is 21 hrs 19 mins 00 secs of light-travel time from Earth (2021:247:120000:1L) Of course I understood that first ...
Serghei Niculaev's user avatar
7 votes
0 answers
259 views

How did NASA refer to dates and times of a mission in the 1970s?

Back in the 1970s, how did NASA describe when an event happened during a mission? For example, when Mariner 10 did its fly-by of Venus, how did the Mariner team refer to that moment in time? Did ...
Joe's user avatar
  • 3,940
4 votes
0 answers
96 views

How old is the use of "L minus" to denote the number of days before launch?

In the SpaceX Inspiration4 Launch broadcast at about T-01:31:05 (91 minutes before launch) the term "L minus five" is used. While "T-minus" is a ...
uhoh's user avatar
  • 149k
1 vote
0 answers
1k views

How to calculate Local Time of Ascending Node (LTAN)

I have a time series of satellite position, $\mathbf{r}(t_i) = (r_i,\theta_i,\phi_i)$ representing geocentric radius, colatitude and longtiude at universal times $t_i$. I want to compute the Local ...
vibe's user avatar
  • 193
1 vote
0 answers
61 views

How will Lucy "make use" of a deep space atomic clock?

The entry for Lucy in Wikipedia's Selection of Discovery Mission 13 and 14; Finalists says: The mission will make use of the Deep Space Atomic Clock.81 81https://www.universetoday.com/122822/...
uhoh's user avatar
  • 149k