# Two-way Doppler and ranging tracking of the Earth flybys

> The primary record: every anomaly is the velocity change needed to fit these data before and after perigee. Most of it is held by the navigation teams…

Source: https://mysteriesdept.com/mysteries/flyby-anomaly/artifacts/ART0CWYEQ5P3MAF/two-way-doppler-and-ranging-tracking-of-the-earth-flybys  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Mysteries](https://mysteriesdept.com/mysteries)[Earth flyby anomaly](https://mysteriesdept.com/mysteries/flyby-anomaly)[Artifacts](https://mysteriesdept.com/mysteries/flyby-anomaly#artifacts)Two-way Doppler and ranging tracking of the Earth flybys

**ART** 0CWYEQ5P3MAF·Artifact · recording

# Two-way Doppler and ranging tracking of the Earth flybys

RecordingESA PSA terms: acknowledge the instrument PI and the PSARecorded around each perigee, 1990 to 2013

[Cite]

**Not kept here.** This copy isn't ours to show. [See it where it's published](https://archives.esac.esa.int/psa/ftp/INTERNATIONAL-ROSETTA-MISSION/RSI/).

The primary record: every anomaly is the velocity change needed to fit these data before and after perigee. Most of it is held by the navigation teams; Turyshev and Toth note that older DSN data deposited by radio science teams can be retrieved from NASA's NSSDC.

Rosetta Radio Science Investigation team, 1990. ESA PSA terms: acknowledge the instrument PI and the PSA

## Copies 1

**Dataset** Rosetta Radio Science Investigation team · archives.esac.esa.int · ESA PSA terms: acknowledge the instrument PI and the PSAPrimary source: [ESA Planetary Science Archive: Rosetta Radio Science Investigation (RSI)](https://mysteriesdept.com/sources/SRC0CWYE4C429MN/esa-planetary-science-archive-rosetta-radio-science)1 step from the original

[Where it's published](https://archives.esac.esa.int/psa/ftp/INTERNATIONAL-ROSETTA-MISSION/RSI/)

## Sources 1

- [The Puzzle of the Flyby Anomaly](https://mysteriesdept.com/sources/SRC0CWYE07A1VKE/the-puzzle-of-the-flyby-anomaly)_SRC_

## Cite it

```
Mysteries Department. (2026). Two-way Doppler and ranging tracking of the Earth flybys [Artifact ART0CWYEQ5P3MAF]. https://mysteriesdept.com/r/ART0CWYEQ5P3MAF
```

Key

**ART** 0CWYEQ5P3MAF

Kind

Recording

Held by

NASA Deep Space Network and JPL navigation (Galileo, NEAR, Cassini, MESSENGER, Juno); ESA ESOC flight dynamics (Rosetta)

Dated

recorded around each perigee, 1990 to 2013

Licence

ESA PSA terms: acknowledge the instrument PI and the PSA

Part of

[Earth flyby anomaly](https://mysteriesdept.com/mysteries/flyby-anomaly)

The record

Every record is open data. Take this one as JSON, with its links and its history.

[JSON](https://mysteriesdept.com/api/v1/records/ART0CWYEQ5P3MAF)