Questions tagged [celestrak]

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Is the United Nations Outer Space Objects Index anything more than a clone of the Celestrak's Satcat? Is it even that, or less?

This looks like this answer because that's where I found this. Ars Technica's SpaceX Starlink engineers take questions in Reddit AMA—here are highlights included a reader poll when I viewed it, screen ...
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2answers
92 views

What is/was legacy TLE ephemeris type 2? (TLE, line 1, column 63)

Wikipedia's Two-Line Element Set entry for line 1, column 63 (1.12) says: Ephemeris type (internal use only - always zero in distributed TLE data)13 13Celestrak Frequently Asked Questions: Two-Line ...
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1answer
101 views

Out of 47,108 lines in the Satcat why are there exactly two lines with launch of the year of 000?

This looks like this answer because that's where I found this. Celestrak offers a copy of a Satcat from which a tabulation of space objects can be gleaned: https://celestrak.com/satcat/search.php ...
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3answers
559 views

Why is the NORAD Catalog number of SpaceX's Starlink's “Darksat” both 71130 and 44972?

@BowlOfRed's answer to Which of the recently launched Starlink satellites is the coated one? links to Celestrak's supplemental table for Starlink. https://celestrak.com/NORAD/elements/supplemental/...
7
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1answer
340 views

What is “OBJECT BS”?

I checked 2018-099 in Celestrak's satcat again for the question Where can I find the TLE of ExseedSat 1, India's first ever private LEO satellite? and noticed that ...
6
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1answer
236 views

Is TESS really lost? What does Celestrak mean exactly?

From this answer to the question What artificial satellite has the farthest orbit around the Earth?: I found the following "far out" spacecraft: TESS (Transiting Exoplanet Survey Satellite)...
2
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1answer
296 views

Why Celestrak has Archived TLEs for most space stations from Russia and the US, but not Tiangong-1, Tiangong-2 or Skylab?

Thinking about this question, I wanted to look at historical data. Then I noticed that while Celestrak does provide Archived TLE data for Salyut 7, Mir, Kvant-1, Kvant-2, Kristallm, Spektr, Priroda, ...